Arjan van de Ven wrote:
On Fri, 2005-12-30 at 07:31 -0500, Thomas Molina wrote:
On Thu, 29 Dec 2005, Erez Zilber wrote:
Hi,
I've downloaded kernel 2.6.15-rc6 (had the same problem with rc7) and built it
on RHAS 4:
When I did that on an Opteron machine, after rebooting and selecting the
2.6.15-rc6 entry in the grub menu, I get the following:
Uncompressing Linux... Ok, booting the kernel.
Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(0,0)
I made sure that ext2 is compiled with the kernel (not as a module).
When I do the same on an emt64 machine, everything works ok. Any idea?
Check on your /boot/grub.config. The above error message is typically
seen when the root= parameter points to a symbolic disk label instead of a
specific disk such as /dev/hda1. I'm not sure what the procedure for
updating where the label points (possibly a mkinitrd) because I normally
change the grub.conf to point to a specific disk.
there is no such procedure, because the disk labels are... ON THE DISK.
And the initrd reads them from all the disks at boot time to find the
one needed. This means that if your disk changes name (for example
because of a scsi bus order change or because of a different order you
load the device drivers... or even if you forget to compile the sata
drivers and suddenly the disk goes from /dev/sda to /dev/hda).... things
just remain working
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Compile the kernel with support for your hardware built in, i'm assuming
you eighter build the controller as a module or didn't built it at all
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