Grub problems

[phil1349]

I have been successfully triple-booting ******* and 2 varieties of Linux on my desktop for some years now with very few problems. The latest configuration which I have been using for 6 months or so is Kubuntu 10.04 & Ubuntu 10.04. The last version installed was Kubuntu 10.04 and on installation it's version of grub found Ubuntu 10.04 no problem (other than a minor problem with partition numbering which was manually fixed) and all was well.

I have just upgraded Ubuntu 10.04 to 10.10 (by clean install rather than version upgrade) and the new grub from Ubuntu 10.10 will not start the existing Kubuntu 10.04, I just get "error: file not found".

The grub.cfg file from Ubuntu 10.10 is completely different (copy attached) but the partition references & numbers etc. are correct so why will the existing Kubuntu 10.04 not start ? ******* starts OK.

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

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi

function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}

function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}

function load_video {
insmod vbe
insmod vga
}

insmod part_msdos
insmod reiserfs
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set 3d5f7fe9-423b-4786-b17c-353fa0b7be0d
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod reiserfs
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set 3d5f7fe9-423b-4786-b17c-353fa0b7be0d
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
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/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod reiserfs
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set 3d5f7fe9-423b-4786-b17c-353fa0b7be0d
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=3d5f7fe9-423b-4786-b17c-353fa0b7be0d ro quiet splash
initrd /boot/initrd.img-2.6.35-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod reiserfs
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set 3d5f7fe9-423b-4786-b17c-353fa0b7be0d
echo 'Loading Linux 2.6.35-22-generic ...'
linux /boot/vmlinuz-2.6.35-22-generic root=UUID=3d5f7fe9-423b-4786-b17c-353fa0b7be0d ro single
echo 'Loading initial ramdisk ...'
initrd /boot/initrd.img-2.6.35-22-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod reiserfs
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set 3d5f7fe9-423b-4786-b17c-353fa0b7be0d
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod reiserfs
set root='(hd0,msdos8)'
search --no-floppy --fs-uuid --set 3d5f7fe9-423b-4786-b17c-353fa0b7be0d
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows 2000 Professional (on /dev/sda1)" {
insmod part_msdos
insmod ntfs
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 08e0fdace0fd9fdc
drivemap -s (hd0) ${root}
chainloader +1
}
menuentry "Ubuntu, with Linux 2.6.32-26-generic (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-26-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro quiet splash
initrd /boot/initrd.img-2.6.32-26-generic
}
menuentry "Ubuntu, with Linux 2.6.32-26-generic (recovery mode) (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-26-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro single
initrd /boot/initrd.img-2.6.32-26-generic
}
menuentry "Ubuntu, with Linux 2.6.32-25-generic (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-25-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro quiet splash
initrd /boot/initrd.img-2.6.32-25-generic
}
menuentry "Ubuntu, with Linux 2.6.32-25-generic (recovery mode) (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-25-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro single
initrd /boot/initrd.img-2.6.32-25-generic
}
menuentry "Ubuntu, with Linux 2.6.32-24-generic (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro quiet splash
initrd /boot/initrd.img-2.6.32-24-generic
}
menuentry "Ubuntu, with Linux 2.6.32-24-generic (recovery mode) (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-24-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro single
initrd /boot/initrd.img-2.6.32-24-generic
}
menuentry "Ubuntu, with Linux 2.6.32-21-generic (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro quiet splash
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry "Ubuntu, with Linux 2.6.32-21-generic (recovery mode) (on /dev/sda2)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set b41bf4dc-9e61-47a3-b7cd-b1279022213f
linux /boot/vmlinuz-2.6.32-21-generic root=UUID=b41bf4dc-9e61-47a3-b7cd-b1279022213f ro single
initrd /boot/initrd.img-2.6.32-21-generic
}
### 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.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

[wilee-nilee]

I'm assuming you have run sudo update-grub in the 10.10.

So from a booted live Ubuntu cd or thumbdrive lets see the bootscript read out; in my signature just click on it and follow the instructions. Come back to the thread and click on the # in the reply panel this makes code tags paste all the text in between.

[phil1349]

Problem solved.

The grub entry "insmod=ext2" is incorrect, the partition is formatted as ext3 so on changing ext2 to ext3 the alternative OS boots no problem.

Considering the no. of betas that were around before final release, I am surprised that this got through but there you go.