I'm working for a small charity that has three WIndows Server 2019 hyper-v servers running a couple of VM's. I have forever incremental backup jobs running that seem to be running fine. However, after a successful restore, I've discovered that some, but not all, of the restored vhdx files have no partitions or no drive letters assigned when mounted.
When right clicking on a restored vhdx file, one of three things happens depending on the vmdx.
Couldn't Mount File
The disk image isn't initialized, contains partitions that aren't recognizable, or contains volumes that haven't been assigned drive letters. Please use the Disk Management snap-in to make sure that the disk, partitions, and volumes are in a usable state.
then one of 2 things happens. Either
Has anyone seen this before? I've not on any of the other servers I manage elsewhere with a very similar configuration.
I should add that for each vm, all restored vhdx files for that vm will either all be okay, all have no partitions, or all have partitions but with no drive letters.
I did create a NEW forever incremental backup for each of the 3 servers. I ran a new backup on one to test, then did a restore. 3 vm's restored fine where I could open the vhdx file, 3 gave me problem 2a above, and one gave me problem 2b.
Any suggestions as to why this is happening and/or what I might be able to to stop it? No point in backing things up if the restores are unusable!!
Thank you all