Restoring DD image in VM


I have a complete DD image of an existing install that refuses to boot in a VM.
I have installed a blank 6.0.0Ni and can mount the images and access data.
Original unit will not boot.
Dell Poweredge 2800 Mirrored 36GB
will not boot says cannot fsck root or rroot

Virtual machine
happens with scsi or ide

Any thoughts?