Problem: Adding slackware64 13 to grub2 loader

[uhorka]

First of all i am linux newbie.

I have problem adding 64-bit Slackware 13 to Grub2 loader
During slackware installation i chose not to instal Lilo..
I have Win7,Ubuntu 9.10 and Slackware 13.0. Grub successfuly found win loader but failed to find Slackware one.
I tried doing it manually by editing /etc/grub.d/40_custom
it looks like this

#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.

menuentry "Slackware 13.0 64-bit" {
set root=(hd0,7)
linux /boot/vmlinuz-generic-2.6.29.6
}

From what i have read ..there should be initrd in the menuentry{} too, but in slackware boot directory i haven't found one ..so i left it blank..

my /boot/grub/grub.cfg file looks like this

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s /boot/grub/grubenv ]; then
have_grubenv=true
load_env
fi
set default="0"
if [ ${prev_saved_entry} ]; then
saved_entry=${prev_saved_entry}
save_env saved_entry
prev_saved_entry=
save_env prev_saved_entry
fi
insmod ext2
set root=(hd0,10)
search --no-floppy --fs-uuid --set 14477b1d-15ee-4e1d-afab-4a8fb10d6634
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=25
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/white
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry "Ubuntu, Linux 2.6.31-14-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,10)
search --no-floppy --fs-uuid --set 14477b1d-15ee-4e1d-afab-4a8fb10d6634
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=14477b1d-15ee-4e1d-afab-4a8fb10d6634 ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows 7 (loader) (on /dev/sda1)" {
insmod ntfs
set root=(hd0,1)
search --no-floppy --fs-uuid --set 7d94f28f6a5fb39a
chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.

menuentry "Slackware 13.0 64-bit" {
set root=(hd0,7)
linux /boot/vmlinuz-generic-2.6.29.6
}
### END /etc/grub.d/40_custom ###

The Slackware item actually appears in the Grub2 menu but when i click it, it goes for a few seconds and then it writes

Kernel panic - not syncing:VFS:Unable to mount root fs on unknown-block(3,7)

My Ubuntu file system is ext3 and for Slackware i chose ext4

So i ask what to do to make Slackware boot properly..

Thanks in advance for your help.

Excuse my english.

[chris81]

Hi

Not sure if this can help you, but I found the following page when 'googleing' for grub-probe and grub-install :

update-grub manpage - man.cx

[uhorka]

i did update-grub many times when configuring grub 2 splash screen and adding slack to menu ..but slack fails to boot and writes something about file system ..

Can it be problem with ext4 and grub2 ??

[ladlers]

I believe you must have some form of lilo included for slackware to boot. Maybe reinstall and put it in the linux partition. Just my two sense. In futher knowledge, 13 has some type of allowance for grub on the dvd; not an option during normal install.

[krazykrakr01]

Can it be problem with ext4 and grub2 ??

I got mine working by adding this:

menuentry "Slackware 13.1 64-bit" {
set root=(hd0,7)
linux /boot/vmlinuz-huge-2.6.33.4 root=/dev/sda7 ro quiet
}

I snaked it from an old Vector install. Since Vector is based on Slack, I figured it would work.

[devils casper]

GRUB2 support ext4 file system. Ubuntu uses ext4 by default. Menuentry for Slackware is wrong in grub.cfg file. Specify root as suggested by krazykrakr01.