System is Debian testing (kernel 2.6.5) installed from Knoppix-3.4 The PC has a 100Mb ZIP drive in it. It is detected at boot time (dmesg -> hdd). Lilo.conf has option hdd=scsi in it.. Attempt to mount the disks in it as # mount /dev/sda4 /mnt/test results in: mount: /dev/sda4 is not valid block device similar messge when /dev/hdd4 is mounted. Any pointers? -ishwar