I've seen this problem all over the forum, but I couldn't find an answer that works. The primary hard drive in my VM cannot be compressed or expanded because, allegedly, it has snapshots or is corrupt. No snapshots, and I don't know why it would be corrupt - XP thinks it's okay. I really need to expand the drive because it's almost full. How can I get rid of the error message so I can expand the drive? Thanks!
Workaround Based on the information in this old thread, http://forum.parallels.com/showthread.php?t=13812 I managed to work around by creating a second ( slightly bigger ) hard disk. The thread suggested using the freeware Clone Maxx tool which I found very slow and failed to copy my 10GB image. I then reverted to trusty Acronis which performed the clone within 20 minutes. Boot from the second new drive. I disconnected then deleted the old but thats not manadatory. Compress / resize then works fine again, and the task is much, much faster Hope that helps