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Elizabeth Ross
2017-06-23 21:21:14 +00:00
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windows/deployment/mbr-to-gpt.md
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@ -19,10 +19,12 @@ localizationpriority: high
**MBR2GPT.EXE** converts a disk from Master Boot Record (MBR) to GUID Partition Table (GPT) partition style without modifying or deleting data on the disk. The tool is designed to be run from a Windows Preinstallation Environment (Windows PE) command prompt, but can also be run from the full Windows 10 operating system (OS).
MBR2GPT.EXE is located in the **Windows\\System32** directory on a Windows 10 computer running Windows 10 version 1703 or later.
You can use MBR2GPT to perform the following:
- \[Within the Windows PE environment\]: Convert any attached MBR-formatted disk to GPT, including the system disk.
- \[From within the currently running OS\]: Convert any attached MBR-formatted disk to GPT, including the system disk.
- \[Within the Windows PE environment\]: Convert any attached MBR-formatted system disk to the GPT partition format.
- \[From within the currently running OS\]: Convert any attached MBR-formatted system disk to the GPT partition format.
>MBR2GPT is available in Windows 10 version 1703, also known as Windows 10 Creator's Update, and later versions.
>The tool is available in both the full OS environment and Windows PE.
@ -224,6 +226,7 @@ Before any change to the disk is made, MBR2GPT validates the layout and geometry
- 16KB + 1 sector at the end of the disk
- There are at most 3 primary partitions in the MBR partition table
- One of the partitions is set as active and is the system partition
- The disk does not have any extended/logical partition
- The BCD store on the system partition contains a default OS entry pointing to an OS partition
- The volume IDs can be retrieved for each volume which has a drive letter assigned
- All partitions on the disk are of MBR types recognized by Windows or has a mapping specified using the /map command-line option