Avatar of Stylish Jedi
Stylish Jedi
Flag for United States of America asked on

Hyper-V guests all-of-a-sudden cannot find their disk and hence cannot power on

All of a sudden - Hyper-V guests all of a sudden cannot find their disks and cannot start:


An error occurred while attempting to start the selected virtual
machine(s).
'SERVE01' failed to start.
Synthetic SCSI Controller (Instance ID
C2570DAD-C5CA-4AD9-9E12-2375ADD176D6): Failed to Power on with Error 'The
system cannot find the file specified.".
Attachment 'G: \Hyper-WHard Disk
Files\SERVER01 _5FA5DA32-7007-4F18-B7A9-8B21F8F38C27.avhdx' could not be
found due to error: 'The system cannot find the file specified."


I checked for the disks and they are in that same folder. I read somewhere that there might be a rights issue in an XML file or even on the disks themselves all-of-a-suden? This host with 3 servers on it has been running fine for over a year no issues, all of sudden on a December Sunday night of all nights all 3 guests cannot find their disks and they all give a similar message as above for why they cannot start!

Hyper-VXML* GuestVM

Avatar of undefined
Last Comment
Philip Elder

8/22/2022 - Mon
ASKER CERTIFIED SOLUTION
Stylish Jedi

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
Philip Elder

That sounds like the host may have been compromised or at least a hardware/firmware hiccup?

.AVHDX = differencing disk. That means CheckPoints/SnapShots.

Did they get deleted without being properly merged back into the parent .VHDX?
Your help has saved me hundreds of hours of internet surfing.
fblack61