Virtualbox corrupts physical disk when removing snapshot

[Rostislav Stříbrný]

Situations:

• Host: Ubuntu, kernel 2.6.38-9
• VirtualBox is used to boot Windows XP SP3 as guest from physical (raw) device (/dev/sda2)
• Snapshot is taken
• Snapshot has about 4GB after a few days...
• Snapshot remove operation is started...and takes really long time.

1.) Physical device cannot boot as guest anymore

=> Fixed by recreating VMDK for that raw device. => OK

2.) When booting Windows XP as guest, it crashes on corrupted url.dll

3.) When booting Windows XP as host, same behavior

=> When looking at C:\Windows\system32\url.dll, it has some TEXT information => When comparing it with C:\Windows\system32\dllcache\url.dll, its binary..

• both files differs

Both files has same length => First one is clearly corrupted.

4.) Since Windows XP was able to boot without problems before I removed the snapshot, it's clear that VirtualBox is responsible for that.

Please either disable creating Snapshots for raw physical devices or fix it somehow. :-(

[aeichner]

Does this still happen wit ha recent release of VirtualBox?

[aeichner]

No response, closing.