OK, this will probably be easy for someone to figure out, but I'm totally new to Linux, so her e goes:
I had Vista installed, resized the partition, installed Mint on the other partition. After this GRUB automatically recognized Vista and had it set up in the "Other Operating Systems" menu. Both would boot fine, no problems at all. THEN, I decided to get smart and install OpenSUSE on a third partition just to try it out as well. It booted up fine, but was now using its GRUB. So, I followed a post in this forum and reset the GRUB to Mint's.
NOW we have problems (I probably did something wrong in the grub command line). Mint's GRUB appeared and would boot Mint, but not OpenSUSE or Vista. In fact, when I started Vista from that screen it gave me an ominous "Vista is missing some file winloader or something, you need to run a repair from the Vista Installation disk." So, I did that.
NOW, all the computer does it boot straight into Vista--no way to start either linux. How would I go about getting the Mint GRUB back and loading all three OSes?
Thanks a lot.