After some more research it seems that everything went wrong when linux decided to put GRUB in my recovery partition or so. Anyways, I found a program which would fix my recovery partition by fixing the MBR for my manufacturer's pc.
And yes, that worked! But it destroyed my C-drive
I tried fixmbr,fixboot,bootcfg and all that on the C-drive, and the final result was a directory listing with lots of nice characters I've never seen before...yes, corrupted.
But at least my recovery partition was accessible again and I could do a so-called destructive system recovery.
Weird things again...my 1st harddisk is 120GB, the recovery partition takes about 2GB...and the C drive is now 30something GB....and the rest of it is unused. I would have thought a system recovery would take things back to how it was when I bought the computer. I haven't tried enlarging my partition yet, hopefully that won't destroy everything again.
Anyways...how can I now successfully repair Suse on my second harddisk? (the system recovery didn't change anything on this disk, luckily)
Is is just that GRUB thing which I should not install in the MBR? Or is there more to it? I found an article on the net about someone with an IBM pc who also has a system recovery partition. In that article it says to install GRUB to the linux /boot section and use some kind of dos/windows bootmanager to resolve the dualboot problem.
Is this the way to go?
Btw, I would like to keep my recovery partition if possible.