I find it helpful to install a 3.1 and then 3.9 system on a smaller scsi harddisk first, say a 500MB one you probably have lying around. Next, add the larger 9GB scsi disk to the chain, properly jumper and terminate it. Boot off of your small scsi disk and then you can format the larger disk directly under 3.9, making a bootable sys: partition in the first 4GB with a boot priority slightly less than the initial small drive partition. Now, reboot, format the new partitions on the large drive and copy over your smaller drive's sys: partition contents to the new sys: partition on the large drive. Reboot and hold down both mouse buttons, select and boot from the new large drive's sys: partition. Once you've verified the machine has booted off your new drive, shut the machine off and remove the small scsi drive (store it for future use).