Forum Discussion
Accidentally deleted 16mb MI reserved partition
Thanks!
- Hello,
it's Microsoft reserved partition (MSR)
Beginning in Windows 10, the size of the MSR is 16 MB.
The default partition layout for UEFI-based PCs is: a system partition, an MSR, a Windows partition, and a recovery tools partition.
source: https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/configure-uefigpt-based-hard-drive-partitions Hi ben888
Likely, will not be a problem at all. It's a remnant of the old days but perhaps in some rare instance some system out there will need it for who knows what, maybe some legacy application or something we've all not heard of. I remember this partition going back to the days of XP and not knowing what the heck it is.
Also, Microsoft also expecs it. Per Wikipedia Microsoft Reserved Partition:
The MSR should be located after the EFI System Partition (ESP) and any OEM service partitions, but it must be located before any primary partitions of bootable Windows operating systems. Microsoft expects an MSR to be present on every GPT disk, and recommends it to be created as the disk is initially partitioned.
I think that's kind of a CYA response by someone working for Microsoft but it's 16 MB, throw it in there and forget about it until some exploit comes along where we need to delete it!
-Jason
