Compiling kernel, VFS problems, 2.6.23.1

jamesstanley · 10-29-2007, 06:47 AM

I am trying to make a bootable floppy disk at the moment.
I have installed GRUB to the disk and compiled linux 2.6.23.1 with:

Code:

make allnoconfig #fits it in a floppy
make menuconfig #enabled: ext2, block devices, misc devices
make bzimage

I then put the System.map, vmlinuz, and config files in /boot on the floppy. I unmounted the floppy and stuck it in my spare computer. GRUB loaded. I gave it the kernel command, and typed boot. It went through a lot of stuff, most of which I don't pretend to understand. The lines that are of importance, the last three, are:

Code:

VFS: Cannot open root device "fd0" or unknown-block(0,0)
Please append a correct "root=" boot option; here are the available partitions:
[Note: none were listed]
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

So, my question is, what did I miss out in my kernel compilation, or what files do I need to include on the floppy, or what extra kernel options (other than root=/dev/fd0 and ro) do I need?

Thanks

hiren_bhatt · 10-30-2007, 10:22 PM

Quote:

Originally Posted by jamesstanley

I then put the System.map, vmlinuz, and config files in /boot on the floppy.

Use mkbootdisk command to create the boot disk. You have to give the kernel name for which u want to make the boot disk.

e.g. mkbootdisk 2.4.20 or /sbin/mkbootdisk 2.4.20 (in case the mkbootdisk is not in the path)
Try it out.

jamesstanley · 11-02-2007, 02:45 PM

Aah. That worked, thanks!