Will I found out my system restore points are not being deleted anymore, I guess that the fake C drive (because when Ichecked it's properties it says 0 bytes free and 0 bytes used) is preventing Xp from deleting win7's system restore points.

Originally Posted by Brink

That's great news.

Brink, I wonder if I might add to this old thread. I have a Vista HP 32-bit dual booting with W8 and had the same restore point problem - and your solution worked!! What a life saver! However, I also have an XP Pro dual boot with W8 and I can't use the solution: when in the XP OS, the partition with W8 is not showing in MyComputer, so I can't identify it, to add something to the registry. Might you have any ideas for me? or, point me in the right direction please? Thanks so much for your help.

Originally Posted by Brink

Hello Simrick, and welcome to Vista Forums.

I've noticed that with Windows 8, it's also best to make sure that each OS is set to not have System Protection turned on for the other OS, and not for any same drives.

For example, in Windows 8, make sure that System Protection is only turned on for the Windows 8 drive, and not for the XP drive. You would also not want to have System Protection turned on for the same drive in both Windows 8 and XP at the same time.

Hi Brink. Thanks so much for your fast reply. I did as you suggested and turned off the system restore for the XP partition in the W8 OS. I also figured out that I had to "assign" a drive letter to the W8 partition (whilst in the XP OS) before I could do the registry hack and tell XP not to mount it. It appears to have worked! Thanks - you're the best!

No doubt this works, but also blocks access to the drive listed in "Offline", how to I get around that?

Originally Posted by Brink

Hello rdwray,

If you like, you could turn it back online in Disk Management while you need it, but just be sure to turn if back offline when finished to prevent the restore points from being wiped out.

If I get this right: I can re-enable the access to the drives with Disk Management and not lose the restore point; question, it there a way to run a program (.reg) on shutdown to automatically change the registry setting?