AhsayCBS (DIY)Granular restore failed: No valid partition on Hyper-V Linux VM
June 3, 2025
Product Version
AhsayOBM: 7.13.0.0 - 7.17.x
Operating System
Windows
Symptom
When performing a granular restore of a Hyper-V guest VM installed with Linux Operating System the following error message is shown by AhsayOBM "Failed to mount virtual disk "%virtual_disk_name%.vhd" (No Valid Partition Found)" .
Cause
Granular restore of Hyper-V guest VMs with non-Windows partitions is not supported. For example, guest VMs installed with Linux or Unix operating systems.
Resolution
To resolve this problem we recommend you either:
Use RunDirect to power on the Linux or Unix guest VM to allow access the files/folders on the drive.
OR
- Restore the Linux or Unix guest VM to Hyper-V host and power on the guest to access the files/folders on the drive.