I am trying to clone (Acronis True Image 2009) the hard drive on my Dell Inspiron 1720 (Vista with Media direct). Old hard drive is healthy, just wanting to be prepared. I connected the new Hard drive (same size) via a SATA to USB enclosure. I selected the "Automatic" clone procedure and verified the partition sizes were proportionate. I then initiated the clone procedure. I was then prompted to reboot. System rebooted and proceeded with cloning. At some point the system appeared to shut down without any prompt from me(black screen). I assumed this was by design and the Clone was complete. I then disconnected the USB (new HD). NOTE( I had previously done the same thing except I did not disconnect before booting back up and the drives in the new HD were re-assigned. (oops, no "C" drive) Anyway, as stated, this time I disconnected the USB HD and swapped the Old drive with the new drive. I then turned on the system but the system booted up to the "Dell Hardware Diagnostic"screen. (And yes I did perform a full test and everything checked out OK) From this point I was never able to boot up to Windows Vista. I re-installed the old hard drive and everything booted just great. Did I miss something? Did I need to do something different to copy the Master Boot Record to the new drive? Is there something about the Dell system that is causing problems? Also, thinking that the cloning may not have completed, I checked the partition sizes and they appeared to be identical between the old and new drives I appologize if there is a thread out there to answer my question, if so, please point me in the right direction.