What is the use of MSR partition?

What is the use of MSR partition?

MSR partition is a Microsoft reserved partition, which is used by every Windows 7 or above operating system on the GUID partition table. The purpose of the required partition is to prevent a GPT disk from being connected to an old system and continued operation as an unformatted empty hard disk, resulting in data loss.

How to use

The size of the MSR partition will vary depending on the size of the GPT disk. For disks smaller than 16 GB, the MSR partition is 32 MB. For disks larger than 16 GB, the MSR partition is 128 MB. The MSR partition is not visible in "Disk Management" but is visible in disk tools such as Diskpart and Diskgenius, but users cannot store or delete data on the MSR partition.

When using the WIN8 system installation version to partition, the system automatically divides "Partition 1, 2, and 3", which are unique partitions of Win8. Among them, 300MB is the recovery area, 100MB is the system partition, and 128MB is the MSR partition.

For Windows operating systems on GPT disks, the MSR partition is not necessary and can be deleted without being affected.

To create an MSR partition, you can use this command:

create partition msr [size=] [offset=] [noerr], the unit is MB,

Instance, if you want to create a 128MB MSR partition:

create partition msr size=128

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