In Windows XP you could set the amount of disk space you wanted the system restore to use. In Vista it auto Magically tries to set it for you and does not give you an easy way to change it. I found that they now call this shadowstorage. To adjust this you have to use the gold old CMD prompt (DOS) Below are instructions for changing the system restore size to 1.5 gig from the 11 it auto-magically set. I do frequent backups (MOZY.com) so I am too worried if my box cannot have 2-4 restore points. I want my disk space. Specially since Vista takes up close to 20 gig.
To view your current shadowstorage settings use the following command (you must first open a command prompt with administrative rights – START | ALLPROGRAMS | ACCESSSORIES | Command Prompt (right click and “run as administrator))
vssadmin list shadowstorage (this shows the current size)
vssadmin list shadows (this shows how many restore points are currently held inthe above space)
The following will adjust the size of your shadowstorage to 1.5 gig
vssadmin resize shadowstorage /On=C: /For=C: /Maxsize=1.5GB
This should help free up some needed space. HAPPY Vista’ing