I'm curious as to how you created a virtual disk...without any XP operating system to create it from within.
I don't know anything about virtual drives, but every one I have seen referenced...needed to be set up from within XP.
When partitions disappear from a hard drive...that's a general sign that the hard drive is failing or the partition structures are corrupt/damaged, IMO.
FWIW: Every MS XP install CD has it's own partitioning mechanism, there is no need to use a 3d-party program.
Edited by hamluis, 25 April 2009 - 10:45 AM.