I am new here, so bare with me please

I have a pc with a FIC VL-603 motherboard, celeron 300, 160 mb ram, matrox g450 and 2 disks, an IBM Deskstar 15gb, and one at 20gb
I am trying to install Linux on this system, have tried Fedora, SuSE and QNX. All of them hangs during setup. I have tried changing to another disk, a seagate that is 2.4 gb. And this works fine. So the "hanging" problem must be a harddrive problem I guess.
I think that it is the bios that makes the trouble. It detects the disk, with the rights size and all, but even so the system hangs during installation.
I do beleive that this bios only supports disks below 8.4 gb, but I am not sure. I did find an bios upgrade on fic's pages , but when I try to flash, I get a "filesize does not match" error.

How can I overcome this? I tried using the ontrack ibm disk manager program, but it would only partition my disk with a 2gb limit on my partitions... so that would do my no good.
Any Ideas? please help!
Regards
Al Bester