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Old 11-08-2004, 05:00 PM   #1
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upgrading to kernel 2.6.9

I am trying to upgrade the kernel on a redhat 9.0 to 2.6.9. I am following the instructions at linux gazette (I am not allowed to posturls ). I first tried it in my home pc and everything went without a hitch. But now when I tried doing it at work I am running in to problems.

The only difference I could point to is that the work pc is scsi based. Rest of the configs are pretty much the same except for the ram. When I trying to boot in the error I am getting is as follows:

VFS: Cannot open root devide "sda3" or unknown-block(0,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Just to be sure, I compiled the scsi support (sym53c8xx) in to the kernel. It initializes perfectly but after that the kernel panics.

Here is my grub.conf:

title Red Hat Linux (2.6.9)
root (hd0,0)
kernel /vmlinuz-2.6.9 ro root=LABEL=/ hdd=ide-scsi
initrd /initrd-2.6.9.img
title Red Hat Linux (2.4.20-8smp)
root (hd0,0)
kernel /vmlinuz-2.4.20-8smp ro root=LABEL=/ hdd=ide-scsi
initrd /initrd-2.4.20-8smp.img
title Red Hat Linux-up (2.4.20-8)
root (hd0,0)
kernel /vmlinuz-2.4.20-8 ro root=LABEL=/ hdd=ide-scsi
initrd /initrd-2.4.20-8.img

Any ideas what might be wrong?
Old 11-09-2004, 05:33 AM   #2
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Registered: Jul 2004
Distribution: Ubuntu 7.04
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The problem that was causing the sda message was that SCSI support was not compiled into the kernel.

If you compile support for SCSI as a module, then the driver information is stored as a file on a SCSI device, which means that you need to mount the SCSI device in order to load the driver, and to mount the device, you must have the driver loaded.

Kernel panicks usually mean that you have failed to compile something that the system needs to work. The error message, and the part of the boot process at which it appears will tend to tell you more information about what that might be.
Old 11-09-2004, 10:24 AM   #3
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Registered: Jun 2004
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yup needed to compile...

Hey, thx for your reply. All along I was under the impression that I had compiled in the SCSI support in the kernel and I was so sure that I didn't even double check my .config. I had to compile in sym53c8xx and not aic... Well it's all good now.


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