Kernel Panic: Invalid or unsupported executable format

[Pixelsize]

I've built my own kernel, set up everything as usual (note i just installed Debian Etch RC 2), and i reboot, as usual... And i get this unusual error T_T says something about it doesnt knows the devfs filesystem and tells me:

Kernel panic: Invalid or unsupported executable format

I have no idea what this could be :S and btw i don't know if i'm telling all the necessary information... anybody takes the risk of helpin me? T_T thanks!

[Vergil83]

Are you getting the error in grub or after it is actually loading?

[Pixelsize]

Yay, good question. Nop, it happens after grub, while it's loading; grub works just fine... it also mentions sth about /dev/console not found... I've searched and some1 said to execute the command: MAKEDEV console - it didn't work btw =P

[Pixelsize]

Yay, i took a snapshot of the problem, but i'll transcript the lastest lines anyways for ppl to be able to find this thread on future searches =):

mount: unknown filesystem type 'devfs'
SCSI subsystem initialized
umount: devfs: not mounted
mount: unknown filesystem type 'devfs'
NTFS driver 2.1.27 [Flags: R/W MODULE]
umount: devfs: not mounted
pivot_root: No such file or directory
/sbin/init: 432: cannot open dev/console: No such file
Kernel panic - not syncing: Attempted to kill init!

The full log would be here =P:


Anyways i think i've copied the most important stuff.

Thanks for the help =)

[Vergil83]

Did you recompile the kernel with devfs enabled? 2.6 uses udev instead....

Do you still have the old kernel installed? Can you boot with that?
First, try adding this to your kernel line devfs=nomount

If that doesn't work, use a live cd or rescue cd and

cd /dev
mknod -m 660 console c 5 1
mknod -m 660 null c 1 3

http://webpages.charter.net/decibels....html#consnull

[Pixelsize]

course, i never never take my base kernel out of grub.

btw i have no idea where you want me to edit the kernel xD i mean, so i could add the devfs=nomount thingy... and i've no idea what devfs is xD i just did make menuconfig as always when setting up my own kernel... anyways what's best thing to do?

[Vergil83]

you need to edit grub. In most cases it will be at

/boot/grub/menu.lst

Near the bottom of the file there will be something that looks like this (this is mine)

title           Debian GNU/Linux, kernel 2.6.18-4-k7
root            (hd0,0)
kernel          /boot/vmlinuz-2.6.18-4-k7 root=/dev/hda1 ro 
initrd          /boot/initrd.img-2.6.18-4-k7
savedefault

make the 2nd line into kernel /boot/vmlinuz-2.6.18-4-k7 root=/dev/hda1 ro devfs=nomount

Just make sure it is for the kernel you made

[Pixelsize]

nop... that won't work... all errors are same and has same kernel panic =/ nothin changed... yes, i've put it on the right place, i'm stupid but not that much xD here's my kernel at grub

title		MyDebian Linux, kernel 2.6.19.7
root		(hd0,4)
kernel		/boot/vmlinuz-2.6.19.7 root=/dev/sda5 ro devfs=nomount
initrd		/boot/initrd.img-2.6.19.7
savedefault

any other trick on mind?

[Vergil83]

what number kernel was installed by debian by default?

[Pixelsize]

copied =P

title		Debian GNU/Linux, kernel 2.6.18-4-686
root		(hd0,4)
kernel		/boot/vmlinuz-2.6.18-4-686 root=/dev/sda5 ro 
initrd		/boot/initrd.img-2.6.18-4-686
savedefault

i got Pentium 4 and SATA hd =P