Microsoft_Reserved_Partition
Microsoft Reserved Partition
Data storage portion for Microsoft Windows
A Microsoft Reserved Partition (MSR) is a partition of a data storage device, which is created to reserve a portion of disk space for possible subsequent use by a Windows operating system installed on a separate partition. No meaningful data is stored within the MSR; though from the MSR, chunks may be taken for the creation of new partitions, which themselves may contain data structures.[1]
The GUID Partition Table (GPT) label for this partition type is E3C9E316-0B5C-4DB8-817D-F92DF00215AE
.[2]