Hello! I use linux RedHat 7.1 with kernel 2.4.2-2 I installed a new server with a Promise FastTrak100 TX4 (v2.00.0 build 11), configured with: 4 HDD IBM 41Gb CHS:16383/16/83 configured for stripping + mirroring When I boot from the rescue mode of the RH7.1 CdRom and then insert the module ft.o from Promise, there is no problem: I can access the disks as /dev/sda (that's the normal behaviour). But, when I boot from the device itself, it hangs because the kernel can't mount the root device /dev/sda3. Here is an excerpt from what prints out when I boot: ... Loading ft module Promise FastTrak Series Linux Driver v1.20 (build 9) scsi0 : FASTTRAK scsi1 : FASTTRAK Vendor: Promise Model: 2X2 Mirror/RAID1 Rev: 1.10 Type: Direct-Access ANSI SCSI revision: 02 VFS: Cannot open root device "803" or 08:03 Please append a correct "root" boot option Kernel Panic: VFS: Unable to mount root fs on 08:03 and then: nothing :) Here is the partition table of /dev/sda Disk /dev/sda: 64 heads, 32 sectors, 78201 cylinders Units = cylinders of 2048 * 512 bytes Device Boot Start End Blocks Type Mount Point /dev/sda1 1 1025 1049584 Linux swap <swap> /dev/sda2 1026 1076 52224 Linux /boot /dev/sda3 1077 4149 3146752 Linux / ... As you see, my root device is /dev/sda3, aka 803. I use lilo (on the mbr). Why does it hang? Any help would be appreciated... Thank you, Jean-Francois SIMON C.S. University of MONS-HAINAUT (.be) IT-OPTICS