If you need SCSI controller support during your installation, select one of
the bootdisk images with a name ending in '.s'.

NOTE:  Just because your machine has a SCSI controller in it doesn't
necessarily mean that you need to install with a SCSI bootdisk!  If your
Linux partition is on an IDE drive, and you're not installing from a SCSI
CD-ROM drive, you should probably use an IDE bootdisk like "bare.i".  Once
the installed machine is up and running, you can edit /etc/rc.d/rc.modules
to load the kernel module to support your SCSI card.