If you installed Vista SP1 lately, check this article out:
System restore points and shadow copies of files are missing after you install Windows Vista Service Pack 1:
http://support.microsoft.com/kb/945681
Also, the following command lists all the shadow copies in the system.
vssadmin list shadows
Run the command from an elevated Command Prompt window.
--
Regards,
Ramesh Srinivasan, Microsoft MVP [Windows Shell/User]
The Winhelponline Blog:
http://www.winhelponline.com/blog
Windows® Troubleshooting:
http://www.winhelponline.com
No I never clean my system restore. I also tried the KB article below and it
does not work at all I still keep seing "no previous version available". This
could be a new issue in SP1. The KB is pretty old.
"Folder versions" list is blank, or you receive a message on Windows Vista:
"There are no previous versions available"
http://support.microsoft.com/kb/937862/en-us#appliesto
Ramesh said:
Perhaps you cleared all the System Restore snapshots lately?
--
Regards,
Ramesh Srinivasan, Microsoft MVP [Windows Shell/User]
The Winhelponline Blog:
http://www.winhelponline.com/blog
Windows® Troubleshooting:
http://www.winhelponline.com
Previous Version is not always showing up in Vista SP1. When i right clicking
my C: harddrive and selecting previous version Sometimes it would not show
any items at all.