In article <>,
says...
> > One known cause of disappearing restore points is dual-booting with XP.
> > Do you do that on your system?
> > --
> >
> >
> Ahah! Yes, I do. I dual boot because my TV Tuner card refuses to work
> properly with Vista, even though it is "Vista ready". I am surprised as I
> am using separate HDDs for the dual boot, not just a partition. That sounds
> like a Vista bug?
"This problem occurs because the volume snapshot driver that is included
with Windows Vista and with Windows Server "Longhorn" uses disk
structures that are incompatible with earlier versions of Windows.
Therefore, the earlier operating system deletes Windows Vista shadow
copies or Windows Server "Longhorn" shadow copies together with the
associated restore points. This behavior occurs because the earlier
Windows operating systems do not recognize the new disk structures."
That quote comes from:
http://support.microsoft.com/kb/926185
--
Kind regards,
Mark Veldhuis.