scsi emulation

I am booting SuSE from grub...When I first install suse I have scsi emulation I boot it from grub and type scanbus and get command not found...although it is ok using the bootdisk...My SuSE partition is hdb4 formatted ext2.. The lines I have in grub are the same ones that boot Debian and Mandrake both of these are ok..I tried hde=ide-scsi in the suse lines but still did not work.....Can anyone spot an error ?? title suse2 root (hd1,3) kernel /boot/vmlinuz root=/dev/hdb4 ro hdc=scsi title mandrake root (hd1,0) kernel /boot/vmlinuz root=/dev/hdb1 ro hdc=ide-scsi Regards Ted Wager