installing 8.1 and aic7xxx

Trying to install version 8.1 pro from CD on a dual pentium450 scsi machine, start of installation hangs on initializing aic7xxx (says lsmod in tty2). After some time (a half hour) yast says, that there is no harddisk. Well, there are 2 disks in the machine.. Looking on textconsoles gives: Oct 26 13:25:43 (none) modprobe: modprobe: Can't locate module char-major-6 Does this have to do something with it? Already restarted install with safe settings, but so far to no avail. How can I install 8.1?? TIA Leen