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I have a question regarding the 100MB partition in Windows7 - Windows10

Is the 100MB partition in Windows 7-Win10 , there regardless of whether the drive's partition table is MBR or GPT?

barlop
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1 Answers1

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There are two different partitions that you might be talking about (System and MSR). Windows 7-10 use a "System" partition which contains the boot manager. Having the boot manager on a separate partition makes it so that the operating system partition can be encrypted (using Bitlocker), and the boot manager (on the non-encrypted system partition) can unlock the operating system partition (decrypt in-memory) before booting into it.

The MSR (Microsoft Reserved) partition is only used on GPT installations. I'm not sure what this is for.

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/configure-biosmbr-based-hard-drive-partitions

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/configure-uefigpt-based-hard-drive-partitions

James T
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