OMG, I got the dreaded UNMOUNTABLE_BOOT_VOLUME error BSOD on migrated Win XP vbox ... and you can hardly tell what it is as it hangs in a loop, not booting to windows or safe mode, just starting over and over with half a second on the BSOD.
I even tried to pause at that point but couldn't.
I had a hirens cd I could boot to, but no fixes in there.
using my xp cd and booting up with the Windows installation CD, then press "r" for recovery mode, then using chkdsk /r ... worked for me
TOOK FOREVER, 21 gb of space was 3 hours ish
I spent a while trying other things that did not work first.
I knew I had to do this because I locked up while moving a huge file, so it was reading and writing when I did an improper shutdown, had to power off cause it froze. MY BAD
Now I am going to make a snapshot of this while it is working and try to load that next time I ever have another problem.
Phew, made it though another day of f'n computers. LOL