[H] Odd problem with hard drive

[Thane Sherrington]

I have a Dell Inspiron 6400 with a dying hard drive.  It's a 100GB 
Seagate.  I removed the drive and put it in our machine to clone it 
using Acronis.  It cloned successfully to a Western Digital 160GB 
drive, and when I rebooted (still on our computer, both drives showed 
up normally, the new drive passed SMART tests, and they appeared to 
have the same files on each.)  I installed the drive in the Dell and 
it BSOD'd on boot.  When I rebooted it and went into setup, it said 
the drive was a 98.5GB drive.  I put the drive back in our machine, 
and although the BIOS said it was a WD1600BEXT, it said the size was 
98.5GB.  I assumed the drive was bad, so I redid the copy on another 
drive, and exactly the same thing happened.  I'm assuming that the 
Dell is somehow screwing up the drive, but I've never seen anything 
like that before - has anyone else, and do you know of a fix?

T