Tried to intall OS2/4 on a 18.2 GB ULTRA3 SCSI HD, OS2/4 recognized the partition after i updated the driver for the SCSI CONTROLLER, but i can't set the partition to INSTALLABLE, even when the partition resides under the 1024 cylinder limitation...The machine is an HP Netserver LC2000 U3... So far, I have been succesful in installing on up to 40 GB EIDE HD, and up to 9 GB ULTRA2 SCSI HD with mixed operating systems added to boot manager..... any ideas is greatly appreciated...

I've had this problem before. I think what caused it was that the partition was created with lvm.exe (warp v4.5, ecs)instead of fdisk.exe (warp v4). The way I got around it was delete the partition and recreate it during the warp 4 installation. I was then able to set it as installable. I assume that you have updated boot disks to see large drives.