Across various machines running Windows 8 and above I have come across an issue when I can only mount a volume or disk under basic emulation or at most flagged as a removable drive. However if I flag the drive for Hard Disk Emulation (Slower) and attempt to mount the drive regardless of an image being used or clean slate, an error occurs and the disk does not mount and an error code is presented on my screen. What I have discovered while watching the mounting process through Windows 10 is a SAN Policy conflict: when mounting begins the disk remains in an offline state.
My solution, which I have now done to all of my machines and has resolved the issue:
- Run an elevated command and load into DISKPART
- Change the SAN policy by typing the following: SAN POLICY=OnlineAll
Nothing else, just mount the disk.