From dd99d455dfc88dcae9a0bb87dc85703d8292ee0a Mon Sep 17 00:00:00 2001 From: Justin Hall Date: Mon, 25 Sep 2017 10:36:37 -0700 Subject: [PATCH] added batter depletion as an example of why BitLocker may go to recovery --- .../bitlocker/bitlocker-frequently-asked-questions.md | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/windows/device-security/bitlocker/bitlocker-frequently-asked-questions.md b/windows/device-security/bitlocker/bitlocker-frequently-asked-questions.md index af3bab22cc..4802b4d1ed 100644 --- a/windows/device-security/bitlocker/bitlocker-frequently-asked-questions.md +++ b/windows/device-security/bitlocker/bitlocker-frequently-asked-questions.md @@ -151,7 +151,15 @@ The following types of system changes can cause an integrity check failure and p ### What causes BitLocker to start into recovery mode when attempting to start the operating system drive? -Because BitLocker is designed to protect your computer from numerous attacks, there are numerous reasons why BitLocker could start in recovery mode. 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. +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. ### Can I swap hard disks on the same computer if BitLocker is enabled on the operating system drive?