Dear All,
I've been spending quite some time searching around and finally came to a solution, here it is:
1. At this DOS prompt, clear the MDT process from the pc to start clean..... By using following commands:
Type:
Diskpart (enter)
List Disk (enter) - should list one disk, your C: and should be Disk 0
Select Disk 0 (providing that is your OS disk, usually several hundred gig) (enter)
clean (enter)
Hard power down the pc, then boot it back up to MDT, it should go right through.
Thanks a lot for all your help and hopefully if anyone else encountered this issue, they could apply the solution quickly. Cheers.