an CRCdisk error ist 95% mostly related to an issue on your disk subsystem.
You should also check your eventlogs there you should find some pointer in
the system log.
Hyper-V does rely on fast I/O access, therefore this could be your problem
PS : An reinstallation does nothing help here as you possibly have an
physical issue with your disks here.
"brandonjelinek" <brandonjelinek@newsgroup> wrote in message
> I have Server 2008 Enterprise. Running 16 gigs ram, 2 2.33 Intel Xeon
> I have 3 Virutal Machines running no problem, but every time i try to load
> 4th machine with server 2008 (any version). It halts even in safe mode at
> crcdisk.sys. I have tried redownloading the software. Reinstalling
> times. Rebuilding but it just seems i cant get a 4th one up. Any ideas?