I have a partition on my hard drive and two copies of Windows. When I turn the computer on it asks which install of Windows I want to boot up in. By default it selects one of the installs and boots into that after a few seonds if I don't do anything.

My problem is that the one it selects by default is the one I don't want to use very often. How to I change it to select the other one by default?

I would think by default it would choose whichever is on the C:drive :unsure:

If only that were true, it boots on the most recently installed which is the F drive.

My only experience with multi-boot systems was by using Partition Magic which worked perfectly. I'm not sure how native windows works.

Older versions of PM used a boot manager by IBM before they wrote their own. Perhaps the IBM one could be public domain? - probably worth a search

You could always "acquire" Partition Magic from somewhere.

Is there no option in your BIOS for "Boot to OS 2" (oslt)?

...not used it my self so....