Originally Posted by yancek
Based on the info in your last post, Fedora installed part of the bootloader to the first drives master boot record which would be the drive on which you have windows. That is the default setting for Fedora and most systems so if you did not manually change it, I suspect that is what happened and why you also had to repair the windows drives' mbr. Pay close attention during installations, particularly when it comes to the bootloader. Every Linux system I have installed will give you options.
Thanks, I had a feeling it would be something like this, but was not aware Fedora would do it.
By the way, there was no installation, it was a HDD that ALREADY had Fedora on it and I added it to my machine to boot in, I still don't think it should have done what it did, unless when mounting the windows HDD it changed the boot sector...