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converting faqs to yml for google pilot
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@ -3,9 +3,9 @@
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## [BitLocker](bitlocker\bitlocker-overview.md)
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### [Overview of BitLocker Device Encryption in Windows 10](bitlocker\bitlocker-device-encryption-overview-windows-10.md)
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### [BitLocker frequently asked questions (FAQ)](bitlocker\bitlocker-frequently-asked-questions.md)
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#### [Overview and requirements](bitlocker\bitlocker-overview-and-requirements-faq.md)
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#### [Overview and requirements](bitlocker\bitlocker-overview-and-requirements-faq.yml)
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#### [Upgrading](bitlocker\bitlocker-upgrading-faq.md)
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#### [Deployment and administration](bitlocker\bitlocker-deployment-and-administration-faq.md)
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#### [Deployment and administration](bitlocker\bitlocker-deployment-and-administration-faq.yml)
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#### [Key management](bitlocker\bitlocker-key-management-faq.md)
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#### [BitLocker To Go](bitlocker\bitlocker-to-go-faq.md)
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#### [Active Directory Domain Services](bitlocker\bitlocker-and-adds-faq.md)
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@ -1,101 +0,0 @@
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---
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title: BitLocker deployment and administration FAQ (Windows 10)
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description: Browse frequently asked questions about BitLocker deployment and administration, such as, "Can BitLocker deployment be automated in an enterprise environment?"
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ms.assetid: c40f87ac-17d3-47b2-afc6-6c641f72ecee
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ms.reviewer:
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ms.prod: w10
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ms.mktglfcycl: explore
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ms.sitesec: library
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ms.pagetype: security
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ms.localizationpriority: medium
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author: dansimp
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ms.author: dansimp
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manager: dansimp
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audience: ITPro
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ms.collection: M365-security-compliance
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ms.topic: conceptual
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ms.date: 02/28/2019
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ms.custom: bitlocker
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---
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# BitLocker frequently asked questions (FAQ)
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**Applies to**
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- Windows 10
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## Can BitLocker deployment be automated in an enterprise environment?
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Yes, you can automate the deployment and configuration of BitLocker and the TPM using either WMI or Windows PowerShell scripts. How you choose to implement the scripts depends on your environment. You can also use Manage-bde.exe to locally or remotely configure BitLocker. For more info about writing scripts that use the BitLocker WMI providers, see [BitLocker Drive Encryption Provider](https://go.microsoft.com/fwlink/p/?LinkId=80600). For more info about using Windows PowerShell cmdlets with BitLocker Drive Encryption, see [BitLocker Cmdlets in Windows PowerShell](https://docs.microsoft.com/powershell/module/bitlocker/index?view=win10-ps).
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## Can BitLocker encrypt more than just the operating system drive?
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Yes.
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## Is there a noticeable performance impact when BitLocker is enabled on a computer?
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Generally it imposes a single-digit percentage performance overhead.
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## How long will initial encryption take when BitLocker is turned on?
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Although BitLocker encryption occurs in the background while you continue to work, and the system remains usable, encryption times vary depending on the type of drive that is being encrypted, the size of the drive, and the speed of the drive. If you are encrypting large drives, you may want to set encryption to occur during times when you will not be using the drive.
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You can also choose whether or not BitLocker should encrypt the entire drive or just the used space on the drive when you turn on BitLocker. On a new hard drive, encrypting just the used spaced can be considerably faster than encrypting the entire drive. When this encryption option is selected, BitLocker automatically encrypts data as it is saved, ensuring that no data is stored unencrypted.
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## What happens if the computer is turned off during encryption or decryption?
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If the computer is turned off or goes into hibernation, the BitLocker encryption and decryption process will resume where it stopped the next time Windows starts. This is true even if the power is suddenly unavailable.
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## Does BitLocker encrypt and decrypt the entire drive all at once when reading and writing data?
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No, BitLocker does not encrypt and decrypt the entire drive when reading and writing data. The encrypted sectors in the BitLocker-protected drive are decrypted only as they are requested from system read operations. Blocks that are written to the drive are encrypted before the system writes them to the physical disk. No unencrypted data is ever stored on a BitLocker-protected drive.
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## How can I prevent users on a network from storing data on an unencrypted drive?
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You can configure Group Policy settings to require that data drives be BitLocker-protected before a BitLocker-protected computer can write data to them. For more info, see [BitLocker Group Policy settings](bitlocker-group-policy-settings.md).
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When these policy settings are enabled, the BitLocker-protected operating system will mount any data drives that are not protected by BitLocker as read-only.
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## What is Used Disk Space Only encryption?
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BitLocker in Windows 10 lets users choose to encrypt just their data. Although it's not the most secure way to encrypt a drive, this option can reduce encryption time by more than 99 percent, depending on how much data that needs to be encrypted. For more information, see [Used Disk Space Only encryption](bitlocker-device-encryption-overview-windows-10.md#used-disk-space-only-encryption).
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## What system changes would cause the integrity check on my operating system drive to fail?
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The following types of system changes can cause an integrity check failure and prevent the TPM from releasing the BitLocker key to decrypt the protected operating system drive:
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- Moving the BitLocker-protected drive into a new computer.
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- Installing a new motherboard with a new TPM.
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- Turning off, disabling, or clearing the TPM.
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- Changing any boot configuration settings.
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- Changing the BIOS, UEFI firmware, master boot record, boot sector, boot manager, option ROM, or other early boot components or boot configuration data.
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## What causes BitLocker to start into recovery mode when attempting to start the operating system drive?
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Because BitLocker is designed to protect your computer from numerous attacks, there are numerous reasons why BitLocker could start in recovery mode.
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For example:
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- Changing the BIOS boot order to boot another drive in advance of the hard drive.
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- Adding or removing hardware, such as inserting a new card in the computer, including some PCMIA wireless cards.
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- Removing, inserting, or completely depleting the charge on a smart battery on a portable computer.
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In BitLocker, recovery consists of decrypting a copy of the volume master key using either a recovery key stored on a USB flash drive or a cryptographic key derived from a recovery password.
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The TPM is not involved in any recovery scenarios, so recovery is still possible if the TPM fails boot component validation, malfunctions, or is removed.
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## What can prevent BitLocker from binding to PCR 7?
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BitLocker can be prevented from binding to PCR 7 if a non-Windows OS booted prior to Windows, or if Secure Boot is not available to the device, either because it has been disabled or the hardware does not support it.
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## Can I swap hard disks on the same computer if BitLocker is enabled on the operating system drive?
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Yes, you can swap multiple hard disks on the same computer if BitLocker is enabled, but only if the hard disks were BitLocker-protected on the same computer. The BitLocker keys are unique to the TPM and operating system drive. So if you want to prepare a backup operating system or data drive in case a disk fails, make sure that they were matched with the correct TPM. You can also configure different hard drives for different operating systems and then enable BitLocker on each one with different authentication methods (such as one with TPM-only and one with TPM+PIN) without any conflicts.
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## Can I access my BitLocker-protected drive if I insert the hard disk into a different computer?
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Yes, if the drive is a data drive, you can unlock it from the **BitLocker Drive Encryption** Control Panel item just as you would any other data drive by using a password or smart card. If the data drive was configured for automatic unlock only, you will have to unlock it by using the recovery key. The encrypted hard disk can be unlocked by a data recovery agent (if one was configured) or it can be unlocked by using the recovery key.
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## Why is "Turn BitLocker on" not available when I right-click a drive?
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Some drives cannot be encrypted with BitLocker. Reasons a drive cannot be encrypted include insufficient disk size, an incompatible file system, if the drive is a dynamic disk, or a drive is designated as the system partition. By default, the system drive (or system partition) is hidden from display. However, if it is not created as a hidden drive when the operating system was installed due to a custom installation process, that drive might be displayed but cannot be encrypted.
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## What type of disk configurations are supported by BitLocker?
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Any number of internal, fixed data drives can be protected with BitLocker. On some versions ATA and SATA-based, direct-attached storage devices are also supported.
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@ -0,0 +1,97 @@
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### YamlMime:FAQ
|
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metadata:
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||||
title: BitLocker deployment and administration FAQ (Windows 10)
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description: Browse frequently asked questions about BitLocker deployment and administration, such as, "Can BitLocker deployment be automated in an enterprise environment?"
|
||||
ms.assetid: c40f87ac-17d3-47b2-afc6-6c641f72ecee
|
||||
ms.reviewer:
|
||||
ms.prod: w10
|
||||
ms.mktglfcycl: explore
|
||||
ms.sitesec: library
|
||||
ms.pagetype: security
|
||||
ms.localizationpriority: medium
|
||||
author: dansimp
|
||||
ms.author: dansimp
|
||||
manager: dansimp
|
||||
audience: ITPro
|
||||
ms.collection: M365-security-compliance
|
||||
ms.topic: conceptual
|
||||
ms.date: 02/28/2019
|
||||
ms.custom: bitlocker
|
||||
|
||||
title: BitLocker frequently asked questions (FAQ)
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||||
summary: |
|
||||
**Applies to**
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- Windows 10
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|
||||
|
||||
sections:
|
||||
- name: Ignored
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||||
questions:
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- question: Can BitLocker deployment be automated in an enterprise environment?
|
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answer: |
|
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Yes, you can automate the deployment and configuration of BitLocker and the TPM using either WMI or Windows PowerShell scripts. How you choose to implement the scripts depends on your environment. You can also use Manage-bde.exe to locally or remotely configure BitLocker. For more info about writing scripts that use the BitLocker WMI providers, see [BitLocker Drive Encryption Provider](https://go.microsoft.com/fwlink/p/?LinkId=80600). For more info about using Windows PowerShell cmdlets with BitLocker Drive Encryption, see [BitLocker Cmdlets in Windows PowerShell](https://docs.microsoft.com/powershell/module/bitlocker/index?view=win10-ps).
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|
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- question: Can BitLocker encrypt more than just the operating system drive?
|
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answer: Yes.
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|
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- question: Is there a noticeable performance impact when BitLocker is enabled on a computer?
|
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answer: Generally it imposes a single-digit percentage performance overhead.
|
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|
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- question: How long will initial encryption take when BitLocker is turned on?
|
||||
answer: |
|
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Although BitLocker encryption occurs in the background while you continue to work, and the system remains usable, encryption times vary depending on the type of drive that is being encrypted, the size of the drive, and the speed of the drive. If you are encrypting large drives, you may want to set encryption to occur during times when you will not be using the drive.
|
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|
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You can also choose whether or not BitLocker should encrypt the entire drive or just the used space on the drive when you turn on BitLocker. On a new hard drive, encrypting just the used spaced can be considerably faster than encrypting the entire drive. When this encryption option is selected, BitLocker automatically encrypts data as it is saved, ensuring that no data is stored unencrypted.
|
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|
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- question: What happens if the computer is turned off during encryption or decryption?
|
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answer: If the computer is turned off or goes into hibernation, the BitLocker encryption and decryption process will resume where it stopped the next time Windows starts. This is true even if the power is suddenly unavailable.
|
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|
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- question: Does BitLocker encrypt and decrypt the entire drive all at once when reading and writing data?
|
||||
answer: No, BitLocker does not encrypt and decrypt the entire drive when reading and writing data. The encrypted sectors in the BitLocker-protected drive are decrypted only as they are requested from system read operations. Blocks that are written to the drive are encrypted before the system writes them to the physical disk. No unencrypted data is ever stored on a BitLocker-protected drive.
|
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|
||||
- question: How can I prevent users on a network from storing data on an unencrypted drive?
|
||||
answer: |
|
||||
You can configure Group Policy settings to require that data drives be BitLocker-protected before a BitLocker-protected computer can write data to them. For more info, see [BitLocker Group Policy settings](bitlocker-group-policy-settings.md).
|
||||
When these policy settings are enabled, the BitLocker-protected operating system will mount any data drives that are not protected by BitLocker as read-only.
|
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|
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- question: What is Used Disk Space Only encryption?
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answer: |
|
||||
BitLocker in Windows 10 lets users choose to encrypt just their data. Although it's not the most secure way to encrypt a drive, this option can reduce encryption time by more than 99 percent, depending on how much data that needs to be encrypted. For more information, see [Used Disk Space Only encryption](bitlocker-device-encryption-overview-windows-10.md#used-disk-space-only-encryption).
|
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|
||||
- question: What system changes would cause the integrity check on my operating system drive to fail?
|
||||
answer: |
|
||||
The following types of system changes can cause an integrity check failure and prevent the TPM from releasing the BitLocker key to decrypt the protected operating system drive:
|
||||
|
||||
- Moving the BitLocker-protected drive into a new computer.
|
||||
- Installing a new motherboard with a new TPM.
|
||||
- Turning off, disabling, or clearing the TPM.
|
||||
- Changing any boot configuration settings.
|
||||
- Changing the BIOS, UEFI firmware, master boot record, boot sector, boot manager, option ROM, or other early boot components or boot configuration data.
|
||||
|
||||
- question: What causes BitLocker to start into recovery mode when attempting to start the operating system drive?
|
||||
answer: |
|
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Because BitLocker is designed to protect your computer from numerous attacks, there are numerous reasons why BitLocker could start in recovery mode.
|
||||
For example:
|
||||
|
||||
- Changing the BIOS boot order to boot another drive in advance of the hard drive.
|
||||
- Adding or removing hardware, such as inserting a new card in the computer, including some PCMIA wireless cards.
|
||||
- Removing, inserting, or completely depleting the charge on a smart battery on a portable computer.
|
||||
|
||||
In BitLocker, recovery consists of decrypting a copy of the volume master key using either a recovery key stored on a USB flash drive or a cryptographic key derived from a recovery password.
|
||||
The TPM is not involved in any recovery scenarios, so recovery is still possible if the TPM fails boot component validation, malfunctions, or is removed.
|
||||
|
||||
- question: What can prevent BitLocker from binding to PCR 7?
|
||||
answer: BitLocker can be prevented from binding to PCR 7 if a non-Windows OS booted prior to Windows, or if Secure Boot is not available to the device, either because it has been disabled or the hardware does not support it.
|
||||
|
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- question: Can I swap hard disks on the same computer if BitLocker is enabled on the operating system drive?
|
||||
answer: Yes, you can swap multiple hard disks on the same computer if BitLocker is enabled, but only if the hard disks were BitLocker-protected on the same computer. The BitLocker keys are unique to the TPM and operating system drive. So if you want to prepare a backup operating system or data drive in case a disk fails, make sure that they were matched with the correct TPM. You can also configure different hard drives for different operating systems and then enable BitLocker on each one with different authentication methods (such as one with TPM-only and one with TPM+PIN) without any conflicts.
|
||||
|
||||
- question: Can I access my BitLocker-protected drive if I insert the hard disk into a different computer?
|
||||
answer: Yes, if the drive is a data drive, you can unlock it from the **BitLocker Drive Encryption** Control Panel item just as you would any other data drive by using a password or smart card. If the data drive was configured for automatic unlock only, you will have to unlock it by using the recovery key. The encrypted hard disk can be unlocked by a data recovery agent (if one was configured) or it can be unlocked by using the recovery key.
|
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|
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- question: Why is "Turn BitLocker on" not available when I right-click a drive?
|
||||
answer: Some drives cannot be encrypted with BitLocker. Reasons a drive cannot be encrypted include insufficient disk size, an incompatible file system, if the drive is a dynamic disk, or a drive is designated as the system partition. By default, the system drive (or system partition) is hidden from display. However, if it is not created as a hidden drive when the operating system was installed due to a custom installation process, that drive might be displayed but cannot be encrypted.
|
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|
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- question: What type of disk configurations are supported by BitLocker?
|
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answer: Any number of internal, fixed data drives can be protected with BitLocker. On some versions ATA and SATA-based, direct-attached storage devices are also supported.
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@ -25,9 +25,9 @@ ms.custom: bitlocker
|
||||
|
||||
This topic links to frequently asked questions about BitLocker. BitLocker is a data protection feature that encrypts drives on your computer to help prevent data theft or exposure. BitLocker-protected computers can also delete data more securely when they are decommissioned because it is much more difficult to recover deleted data from an encrypted drive than from a non-encrypted drive.
|
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|
||||
- [Overview and requirements](bitlocker-overview-and-requirements-faq.md)
|
||||
- [Overview and requirements](bitlocker-overview-and-requirements-faq.yml)
|
||||
- [Upgrading](bitlocker-upgrading-faq.md)
|
||||
- [Deployment and administration](bitlocker-deployment-and-administration-faq.md)
|
||||
- [Deployment and administration](bitlocker-deployment-and-administration-faq.yml)
|
||||
- [Key management](bitlocker-key-management-faq.md)
|
||||
- [BitLocker To Go](bitlocker-to-go-faq.md)
|
||||
- [Active Directory Domain Services (AD DS)](bitlocker-and-adds-faq.md)
|
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@ -1,82 +0,0 @@
|
||||
---
|
||||
title: BitLocker overview and requirements FAQ (Windows 10)
|
||||
description: This topic for the IT professional answers frequently asked questions concerning the requirements to use BitLocker.
|
||||
ms.assetid: c40f87ac-17d3-47b2-afc6-6c641f72ecee
|
||||
ms.reviewer:
|
||||
ms.prod: w10
|
||||
ms.mktglfcycl: explore
|
||||
ms.sitesec: library
|
||||
ms.pagetype: security
|
||||
ms.localizationpriority: medium
|
||||
author: dansimp
|
||||
ms.author: dansimp
|
||||
manager: dansimp
|
||||
audience: ITPro
|
||||
ms.collection: M365-security-compliance
|
||||
ms.topic: conceptual
|
||||
ms.date: 02/28/2019
|
||||
ms.custom: bitlocker
|
||||
---
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|
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# BitLocker Overview and Requirements FAQ
|
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|
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**Applies to**
|
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- Windows 10
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|
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## How does BitLocker work?
|
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**How BitLocker works with operating system drives**
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|
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You can use BitLocker to mitigate unauthorized data access on lost or stolen computers by encrypting all user files and system files on the operating system drive, including the swap files and hibernation files, and checking the integrity of early boot components and boot configuration data.
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||||
|
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**How BitLocker works with fixed and removable data drives**
|
||||
|
||||
You can use BitLocker to encrypt the entire contents of a data drive. You can use Group Policy to require that BitLocker be enabled on a drive before the computer can write data to the drive. BitLocker can be configured with a variety of unlock methods for data drives, and a data drive supports multiple unlock methods.
|
||||
|
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## Does BitLocker support multifactor authentication?
|
||||
|
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Yes, BitLocker supports multifactor authentication for operating system drives. If you enable BitLocker on a computer that has a TPM version 1.2 or later, you can use additional forms of authentication with the TPM protection.
|
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## What are the BitLocker hardware and software requirements?
|
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|
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For requirements, see [System requirements](bitlocker-overview.md#system-requirements).
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||||
|
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> [!NOTE]
|
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> Dynamic disks are not supported by BitLocker. Dynamic data volumes will not be displayed in the Control Panel. Although the operating system volume will always be displayed in the Control Panel, regardless of whether it is a Dynamic disk, if it is a dynamic disk it cannot be protected by BitLocker.
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## Why are two partitions required? Why does the system drive have to be so large?
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Two partitions are required to run BitLocker because pre-startup authentication and system integrity verification must occur on a separate partition from the encrypted operating system drive. This configuration helps protect the operating system and the information in the encrypted drive.
|
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|
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## Which Trusted Platform Modules (TPMs) does BitLocker support?
|
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|
||||
BitLocker supports TPM version 1.2 or higher. BitLocker support for TPM 2.0 requires Unified Extensible Firmware Interface (UEFI) for the device.
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||||
|
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> [!NOTE]
|
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> TPM 2.0 is not supported in Legacy and CSM Modes of the BIOS. Devices with TPM 2.0 must have their BIOS mode configured as Native UEFI only. The Legacy and Compatibility Support Module (CSM) options must be disabled. For added security Enable the Secure Boot feature.
|
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|
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> Installed Operating System on hardware in legacy mode will stop the OS from booting when the BIOS mode is changed to UEFI. Use the tool [MBR2GPT](https://docs.microsoft.com/windows/deployment/mbr-to-gpt) before changing the BIOS mode which will prepare the OS and the disk to support UEFI.
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## How can I tell if a TPM is on my computer?
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Beginning with Windows 10, version 1803, you can check TPM status in **Windows Defender Security Center** > **Device Security** > **Security processor details**. In previous versions of Windows, open the TPM MMC console (tpm.msc) and look under the **Status** heading.
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## Can I use BitLocker on an operating system drive without a TPM?
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Yes, you can enable BitLocker on an operating system drive without a TPM version 1.2 or higher, if the BIOS or UEFI firmware has the ability to read from a USB flash drive in the boot environment. This is because BitLocker will not unlock the protected drive until BitLocker's own volume master key is first released by either the computer's TPM or by a USB flash drive containing the BitLocker startup key for that computer. However, computers without TPMs will not be able to use the system integrity verification that BitLocker can also provide.
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To help determine whether a computer can read from a USB device during the boot process, use the BitLocker system check as part of the BitLocker setup process. This system check performs tests to confirm that the computer can properly read from the USB devices at the appropriate time and that the computer meets other BitLocker requirements.
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## How do I obtain BIOS support for the TPM on my computer?
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Contact the computer manufacturer to request a Trusted Computing Group (TCG)-compliant BIOS or UEFI boot firmware that meets the following requirements:
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||||
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||||
- It is compliant with the TCG standards for a client computer.
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- It has a secure update mechanism to help prevent a malicious BIOS or boot firmware from being installed on the computer.
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## What credentials are required to use BitLocker?
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To turn on, turn off, or change configurations of BitLocker on operating system and fixed data drives, membership in the local **Administrators** group is required. Standard users can turn on, turn off, or change configurations of BitLocker on removable data drives.
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## What is the recommended boot order for computers that are going to be BitLocker-protected?
|
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|
||||
You should configure the startup options of your computer to have the hard disk drive first in the boot order, before any other drives such as CD/DVD drives or USB drives. If the hard disk is not first and you typically boot from hard disk, then a boot order change may be detected or assumed when removable media is found during boot. The boot order typically affects the system measurement that is verified by BitLocker and a change in boot order will cause you to be prompted for your BitLocker recovery key. For the same reason, if you have a laptop with a docking station, ensure that the hard disk drive is first in the boot order both when docked and undocked.
|
||||
@ -0,0 +1,82 @@
|
||||
### YamlMime:FAQ
|
||||
metadata:
|
||||
title: BitLocker overview and requirements FAQ (Windows 10)
|
||||
description: This topic for the IT professional answers frequently asked questions concerning the requirements to use BitLocker.
|
||||
ms.assetid: c40f87ac-17d3-47b2-afc6-6c641f72ecee
|
||||
ms.reviewer:
|
||||
ms.prod: w10
|
||||
ms.mktglfcycl: explore
|
||||
ms.sitesec: library
|
||||
ms.pagetype: security
|
||||
ms.localizationpriority: medium
|
||||
author: dansimp
|
||||
ms.author: dansimp
|
||||
manager: dansimp
|
||||
audience: ITPro
|
||||
ms.collection: M365-security-compliance
|
||||
ms.topic: conceptual
|
||||
ms.date: 02/28/2019
|
||||
ms.custom: bitlocker
|
||||
|
||||
title: BitLocker Overview and Requirements FAQ
|
||||
summary: |
|
||||
**Applies to**
|
||||
- Windows 10
|
||||
|
||||
|
||||
sections:
|
||||
- name: Ignored
|
||||
questions:
|
||||
- question: How does BitLocker work?
|
||||
answer: |
|
||||
**How BitLocker works with operating system drives**
|
||||
|
||||
You can use BitLocker to mitigate unauthorized data access on lost or stolen computers by encrypting all user files and system files on the operating system drive, including the swap files and hibernation files, and checking the integrity of early boot components and boot configuration data.
|
||||
|
||||
**How BitLocker works with fixed and removable data drives**
|
||||
|
||||
You can use BitLocker to encrypt the entire contents of a data drive. You can use Group Policy to require that BitLocker be enabled on a drive before the computer can write data to the drive. BitLocker can be configured with a variety of unlock methods for data drives, and a data drive supports multiple unlock methods.
|
||||
|
||||
- question: Does BitLocker support multifactor authentication?
|
||||
answer: Yes, BitLocker supports multifactor authentication for operating system drives. If you enable BitLocker on a computer that has a TPM version 1.2 or later, you can use additional forms of authentication with the TPM protection.
|
||||
|
||||
- question: What are the BitLocker hardware and software requirements?
|
||||
answer: |
|
||||
For requirements, see [System requirements](bitlocker-overview.md#system-requirements).
|
||||
|
||||
> [!NOTE]
|
||||
> Dynamic disks are not supported by BitLocker. Dynamic data volumes will not be displayed in the Control Panel. Although the operating system volume will always be displayed in the Control Panel, regardless of whether it is a Dynamic disk, if it is a dynamic disk it cannot be protected by BitLocker.
|
||||
|
||||
- question: Why are two partitions required? Why does the system drive have to be so large?
|
||||
answer: Two partitions are required to run BitLocker because pre-startup authentication and system integrity verification must occur on a separate partition from the encrypted operating system drive. This configuration helps protect the operating system and the information in the encrypted drive.
|
||||
|
||||
- question: Which Trusted Platform Modules (TPMs) does BitLocker support?
|
||||
answer: |
|
||||
BitLocker supports TPM version 1.2 or higher. BitLocker support for TPM 2.0 requires Unified Extensible Firmware Interface (UEFI) for the device.
|
||||
|
||||
> [!NOTE]
|
||||
> TPM 2.0 is not supported in Legacy and CSM Modes of the BIOS. Devices with TPM 2.0 must have their BIOS mode configured as Native UEFI only. The Legacy and Compatibility Support Module (CSM) options must be disabled. For added security Enable the Secure Boot feature.
|
||||
|
||||
> Installed Operating System on hardware in legacy mode will stop the OS from booting when the BIOS mode is changed to UEFI. Use the tool [MBR2GPT](https://docs.microsoft.com/windows/deployment/mbr-to-gpt) before changing the BIOS mode which will prepare the OS and the disk to support UEFI.
|
||||
|
||||
- question: How can I tell if a TPM is on my computer?
|
||||
answer: Beginning with Windows 10, version 1803, you can check TPM status in **Windows Defender Security Center** > **Device Security** > **Security processor details**. In previous versions of Windows, open the TPM MMC console (tpm.msc) and look under the **Status** heading.
|
||||
|
||||
- question: Can I use BitLocker on an operating system drive without a TPM?
|
||||
answer: |
|
||||
Yes, you can enable BitLocker on an operating system drive without a TPM version 1.2 or higher, if the BIOS or UEFI firmware has the ability to read from a USB flash drive in the boot environment. This is because BitLocker will not unlock the protected drive until BitLocker's own volume master key is first released by either the computer's TPM or by a USB flash drive containing the BitLocker startup key for that computer. However, computers without TPMs will not be able to use the system integrity verification that BitLocker can also provide.
|
||||
To help determine whether a computer can read from a USB device during the boot process, use the BitLocker system check as part of the BitLocker setup process. This system check performs tests to confirm that the computer can properly read from the USB devices at the appropriate time and that the computer meets other BitLocker requirements.
|
||||
|
||||
- question: How do I obtain BIOS support for the TPM on my computer?
|
||||
answer: |
|
||||
Contact the computer manufacturer to request a Trusted Computing Group (TCG)-compliant BIOS or UEFI boot firmware that meets the following requirements:
|
||||
|
||||
- It is compliant with the TCG standards for a client computer.
|
||||
- It has a secure update mechanism to help prevent a malicious BIOS or boot firmware from being installed on the computer.
|
||||
|
||||
- question: What credentials are required to use BitLocker?
|
||||
answer: To turn on, turn off, or change configurations of BitLocker on operating system and fixed data drives, membership in the local **Administrators** group is required. Standard users can turn on, turn off, or change configurations of BitLocker on removable data drives.
|
||||
|
||||
- question: What is the recommended boot order for computers that are going to be BitLocker-protected?
|
||||
answer: You should configure the startup options of your computer to have the hard disk drive first in the boot order, before any other drives such as CD/DVD drives or USB drives. If the hard disk is not first and you typically boot from hard disk, then a boot order change may be detected or assumed when removable media is found during boot. The boot order typically affects the system measurement that is verified by BitLocker and a change in boot order will cause you to be prompted for your BitLocker recovery key. For the same reason, if you have a laptop with a docking station, ensure that the hard disk drive is first in the boot order both when docked and undocked.
|
||||
|
||||
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