help booting new kernel.

levicc00123 · 10-11-2004, 02:53 PM

I just compiled a new kernel on my system and the files are in place and edited /boot/grub/menu.lst. tried to boot into the new kernel and got the following error message.

Code:

VFS: Cannot open root device "hda" or Unknown-block(0,0).
Please append a correct "rot=" option.
Kernel panic: VFS: Unable to mount root fs on Unknown-block(0,0).

here's my menu.lst entries for my new kernel and my old kernel that came with my system.

Code:

title		Kernel 2.6.8.1
root		(hd0,0)
kernel		/boot/vmlinuz-2.6.8.1 root=/dev/hda1 ro
initrd		/boot/initrd.img-2.6.8.1
savedefault
boot

title		Debian GNU/Linux, kernel 2.6.7-1-386 
root		(hd0,0)
kernel		/boot/vmlinuz-2.6.7-1-386 root=/dev/hda1 ro 
initrd		/boot/initrd.img-2.6.7-1-386
savedefault
boot

eternauta3k · 10-11-2004, 03:15 PM

Are you sure your kernel partition is a primary one? Otherwise, partition numbers in GRUB start from 4 (equivalent to hda5)

levicc00123 · 10-11-2004, 03:17 PM

I've only got 1 disk and 2 partitions. my first partition is where all of the files are and the second is swap.

eternauta3k · 10-11-2004, 04:01 PM

Ok, but are those two primary partitions or logical partitions inside an extended partition?

levicc00123 · 10-11-2004, 05:00 PM

/dev/hda1 is primary
/dev/hda5 is logical

eternauta3k · 10-11-2004, 05:07 PM

I already said that

The thing is, if your root partition is logical, it can't be hda1. If it isn't, then... hope someone else can help.