Hi all,

I have searching for answer to my problem and can't find the right solution so I am asking for your help.

Error at boot:
Freeing unused kernel memory: 224k freed
mount: mounting /dev/hda4 on mnt failed
ERROR: No /sbin/init found on rootdev (or not mounted). Trouble ahead.
Kernel panic - not syncing: Attempted to kill init!

Information

Slackware 12 kernel generic 2.6.21.5

made initrd.img with
mkinitrd -c -k 2.6.21.5 -f ext2 -r /dev/hda4 -o initrn.img

disk partitions:
/dev/hda1 /boot
/dev/hda2 /home
/dev/hda3 /swap
/dev/hda4 /

grub menu.lst

title Slackware
root (hd0,0)
kernel /boot/vmlinuz root=/dev/hda4 ro vga=normal
initrd /boot/initrd.img

TIA for your help

Lu_hernan

I am assuming the filename for the initrd is correct in the real mkinitrd line, and the typo was just in your post?

try adding the option -m ext2 to mkinitrd, there is no need for -o option since default output file is initrd.img.. so mkinitrd will look like

The output is usually initrd.gz, not initrd.img.
You can run this script to get a suitable mkinitrd command:

http://www.slackware.com/~alien/tool...d_generator.sh

yes..my mistake.its initrd.gz

Post your /etc/fstab file. Do you have an extra entry for /dev/sda4?
Is the mount point /?