I'd never seen this partition before on my secondary hard drive in Disk Management, and when I was re-installing Windows onto my primary, I accidentally deleted it, thinking it had been created during the Windows re-installation process. I later learned that the MSR partition is not meant to be visible in Disk Management, so I decided to recreate it. My secondary had 129mb of unallocated space at the beginning of the drive, so I did "create partition msr size=128 offset=1". This means that there is now 1mb of unallocated space at the start of the drive, then a 128mb MSR, and then my first user partition. Did I do it all correctly?