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I have just come into possession of an older Compaq Proliant ML370 G1 rack mount Dual 933 mhz P3, 6 x 36.4 GB 10K RPM SCSI drives, SmartArray 431 RAID controller, 1GB of RAM, etc ...
I managed to get Slackware 10.1 to install after some shoe horning and now I'm trying to compile a 18.104.22.168 kernel on it. I've got all the hardware included and it compiles installs fine, add it to LILO with no trouble.
The old 2.4 kernel that Slack installed boots fine, but the new one throws the following error:
Cannot open root device "4805" or unknown-block(72,5)
I've looked in the lilo.conf and it's pointing at the right root device ... /dev/ida/c0d0p5
I've Googled for days with little success, found one place that said to put an append = c0d0=cpqarray in lilo.conf and that didn't work. I would really like to get this kernel working, as the current one doesn't have SMP support (yes I've disabled power management).
Don't know how helpful this will be, but I'm currently working on a Proliant 1850R, dual P3, SCSI drive array, etc. It's about 1 generation older than the boxes you all are playing with.
After erasing and configuring the system with the Compaq Smartstart CD and configuring the drive array (SmartArray 3200, 1 9-gig for the OS. 2 18 gigs in hardware RAID 1 for /home), I used the current Debian testing release candidate installer. It installed a stock 2.6.8something kernel, found the logical drives and detected all the hardware OK, etc, and basically worked, but only 1 CPU was alive. Debain uses grub by default, and that is working fine.
I then did apt-get install kernel-image-2.6.8-2-686-smp, rebooted, and both CPU's are running. The only issue remaining is a drive array problem that may be an issue with the Compaq drive array firmware and/or driver. (One of the RAID 1 pair is always wanting to do data recovery at bootup, does so, and then comes up with an amber indicator light and wants to recover again, but the Compaq Array Diagnostic Utility says all the hardware is good to go. the /home file system on that pair is functioning, but presumably only on 1 drive.) I'll be posting on that separately if I don't find an anwer.
If you're well and truly stumped, it may be worth trying the Debian installer on your box and seeing whether the issue goes away. Maybe the 2.8.6 series won't have the issue, or maybe the Debian stock testing kernels are compiled with the magic answer you're looking for.
Its a bit older p3 dual 700mhz but, it seems the problem maybe a bad driver for the hard disk controller in the kernel. i have many problems with the cpqarray controller and have only installed fedora core, mandrake and debian with success.
Sorry that i cant be much more help
and rodo-07 fedora works amazing on the server its very fast and the blag distro is a very good to fedora (its fedora but apt-get and it's on one cd)