One of my servers was reported low free space on “System Reserved” partition. Never seen before such a problem.
When you install Windows and use whole disk for installation, it still does two partitions:
- “System Reserved”, without drive letter, few hundred MB in size
- C: drive with the rest of the space, several GB in size
I found out after assigning drive letter to the small partition, that most of the space was wasted by “system volume information” folder. This lead me to try “vssadmin list shadows” command to see all VSS snapshots. And indeed there were snapshots present:
So I tried to get rid of them by using command “vssadmin delete shadows /for=c:”, but it failed.
For that purpose I found utility named diskshadow. I listed all shadows with command “list shadows all” and deleted them with the command “delete shadows all”
