Re: Custom kernel won't boot - unable to mount root fs
On Tue, Jun 26, 2001 at 02:07:55PM -0500, Dave Sherohman wrote:
> I've got a SCSI-based quad P3 system which starts up just fine off the stock
> 2.2.19pre17 kernel from potato, but refuses to boot the 2.4.5 kernel that
> I've built for it. It dies just after initializing the NET4 subsystem,
> saying:
>
> NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
> request_module[block-major-8]: Root fs not mounted
> VFS: Cannot open root device "801" or 08:01
> Please append a correct "root=" boot option
> Kernel panic: VFS: Unable to mount root fs on 08:01
$ modprobe -c | grep ' block-major-8 '
alias block-major-8 sd_mod
> The SCSI controller (Adaptec AIC7899) is detected, although it looks like my
> 2.4.5 only detects one channel while the stock 2.2.19pre17 sees two channels.
> But that could just be a difference in how 2.2 and 2.4 report things.
My guess is that your kernel does not know what a "scsi disk" is.
Can you grep for CONFIG_BLK_DEV_SD in the config for your kernel (if
you used make-kpkg and installed a kernel-image.deb, it is installed
as /boot/config-2.4.5)? It should be set to "y", not "m".
Cheers,
Joost
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