Restrictions on Virtual Disk Mount
The following limitations apply when mounting virtual disks:
You cannot mount virtual disk if any of its .vmdk files are encrypted, compressed, or read-only. However you can change these attributes and then mount the virtual disk.
The C: boot driver should be on scsi:0:0, and all disks should be opened in SCSI order (0:0, 0:1, 0:2, 1:0, 1:1, 1:2, etc.) before mounting any of them.