Hello there, I'd like to share you a story of my problem.

Here's how it happened in short:
I was installing linux onto my iPod and accidentally wrote the boot record of the ipod (hda) to my master drive (sda). It was a slip of the finger, I knew what I was doing, I just wasn't paying enough attention when it was critical that I did.

I recently went out and bought the very amazing book called Knoppix Hacks, and I tried two hacks in the book related to my problem:
Hack #54. Kill and Resurrect the Master Boot Record and Hack #52. Repair Grub.

I've also tried other various methods I've found on the internet.

When this problem had first started, I was returned an error somewhat like this:
Something something, Insert boot disk and press enter.

I don't know what I did to "sort of fix it", but it now returns:
MBR 1FA:

Anyone got any ideas, I'd like to be able to get an operating system on here that is actually physically on the hard drive...

Thank you very much.