I just sent my laptop into Dell for a new screen. I took my hard drive out to keep it safe, and ended up accessing it as an external twice while the laptop was gone. Today I got my laptop back, re-installed the drive and booted it up. I was immediately greeted with 'NTLDR not found'. I've never seen this before, but I could make out what it was trying to say and immediately suspected the MBR. I restarted and crossed my fingers, to no avail. I tried vista startup repair, but it didn't find any problems.

Now, I'm in a unique situation. I upgraded about 2 weeks ago from my stock 160GB HD to a bigger 320GB HD. I used norton ghost to copy over the partitions exactly to the new drive. As such, I have essentially a carbon copy backup on my old drive, save for 2 weeks of emails and files. I actually installed my old drive and that's how I'm using my laptop to write this...

The way I see it I have two options:
1) Find a way to copy the good MBR from my smaller drive to the bigger one, and hope that it works.
2) Backup my files from my big drive to my small drive, wipe the big one clean, and re-copy the partitions to the big one.

Does anyone know of a way to copy an MBR from drive to drive? Instructions would be fantastic.
Also, has anyone been in my situation and can they offer any advice?

I called Dell Tech Support and got the policy answer of 'You must reformat'. I've been told that almost 10 times in the past and each time I found a simple fix that rescued it, so I'm not exactly believing them without proof. I understand that this will be more involved than a registry fix but I essentially have nothing to lose.

Any ideas?

Thanks