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
"GT" <> wrote in message news:B7EEED7A-5135-43B9-9FF8-...
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, MS-MVP" wrote:
> 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
>
> "GT" <> wrote in message news:20D2EE15-5811-41DA-8948-...
> 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.
>