Grub Not Listing Old Kernels

[jmadero]

Hi All,

I'm having an issue where a system is locking up. I suspect it's the kernel so I installed an older kernel. when I do grub-update it lists the old kernel, along with my new one, memtest and XP. When I reboot the old kernel doesn't show up in my list. Any ideas? Thanks in advance

[atreyu]

Have you had a look at the grub config file? Post the contents of it here so we can help, if you don't figure it out by looking at it.

[jmadero]

Everything looks like it's in there, just not listing during startup

#
# 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 $prefix/grubenv ]; then
  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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=640x480
  insmod gfxterm
  insmod vbe
  if terminal_output gfxterm ; then true ; else
    # For backward compatibility with versions of terminal.mod that don't
    # understand terminal_output
    terminal gfxterm
  fi
fi
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
set locale_dir=($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 ###
insmod ext2
set root='(hd0,7)'
search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
insmod png
if background_image /usr/share/backgrounds/grub.png ; then
  set color_normal=black/black
  set color_highlight=magenta/black
else
  set menu_color_normal=white/black
  set menu_color_highlight=black/light-gray
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Bodhi Linux, with Linux 3.0.0-12-generic' --class bodhi --class gnu-linux --class gnu --class os {
	recordfail
	insmod ext2
	set root='(hd0,7)'
	search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
	linux	/boot/vmlinuz-3.0.0-12-generic root=UUID=56b374d4-6250-4092-aa3f-d6ad6012182b ro   splash quiet pcie_aspm=force
	initrd	/boot/initrd.img-3.0.0-12-generic
}
menuentry 'Bodhi Linux, with Linux 3.0.0-12-generic (recovery mode)' --class bodhi --class gnu-linux --class gnu --class os {
	recordfail
	insmod ext2
	set root='(hd0,7)'
	search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
	echo	'Loading Linux 3.0.0-12-generic ...'
	linux	/boot/vmlinuz-3.0.0-12-generic root=UUID=56b374d4-6250-4092-aa3f-d6ad6012182b ro single 
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initrd.img-3.0.0-12-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
	insmod ext2
	set root='(hd0,7)'
	search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
	linux16	/boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
	insmod ext2
	set root='(hd0,7)'
	search --no-floppy --fs-uuid --set 56b374d4-6250-4092-aa3f-d6ad6012182b
	linux16	/boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Ubuntu, with Linux 3.2.0-030200-generic (on /dev/sda1)" {
	insmod ext2
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set 49e485fa-6ac4-4083-903e-b97d11aea1ab
	linux /boot/vmlinuz-3.2.0-030200-generic root=UUID=49e485fa-6ac4-4083-903e-b97d11aea1ab ro quiet splash vt.handoff=7
	initrd /boot/initrd.img-3.2.0-030200-generic
}
menuentry "Ubuntu, with Linux 3.2.0-030200-generic (recovery mode) (on /dev/sda1)" {
	insmod ext2
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set 49e485fa-6ac4-4083-903e-b97d11aea1ab
	linux /boot/vmlinuz-3.2.0-030200-generic root=UUID=49e485fa-6ac4-4083-903e-b97d11aea1ab ro recovery nomodeset
	initrd /boot/initrd.img-3.2.0-030200-generic
}
menuentry "Ubuntu, with Linux 3.0.0-14-generic (on /dev/sda1)" {
	insmod ext2
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set 49e485fa-6ac4-4083-903e-b97d11aea1ab
	linux /boot/vmlinuz-3.0.0-14-generic root=UUID=49e485fa-6ac4-4083-903e-b97d11aea1ab ro quiet splash vt.handoff=7
	initrd /boot/initrd.img-3.0.0-14-generic
}
menuentry "Ubuntu, with Linux 3.0.0-14-generic (recovery mode) (on /dev/sda1)" {
	insmod ext2
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set 49e485fa-6ac4-4083-903e-b97d11aea1ab
	linux /boot/vmlinuz-3.0.0-14-generic root=UUID=49e485fa-6ac4-4083-903e-b97d11aea1ab ro recovery nomodeset
	initrd /boot/initrd.img-3.0.0-14-generic
}
menuentry "Ubuntu, with Linux 3.0.0-12-generic (on /dev/sda1)" {
	insmod ext2
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set 49e485fa-6ac4-4083-903e-b97d11aea1ab
	linux /boot/vmlinuz-3.0.0-12-generic root=UUID=49e485fa-6ac4-4083-903e-b97d11aea1ab ro quiet splash vt.handoff=7
	initrd /boot/initrd.img-3.0.0-12-generic
}
menuentry "Ubuntu, with Linux 3.0.0-12-generic (recovery mode) (on /dev/sda1)" {
	insmod ext2
	set root='(hd0,1)'
	search --no-floppy --fs-uuid --set 49e485fa-6ac4-4083-903e-b97d11aea1ab
	linux /boot/vmlinuz-3.0.0-12-generic root=UUID=49e485fa-6ac4-4083-903e-b97d11aea1ab ro recovery nomodeset
	initrd /boot/initrd.img-3.0.0-12-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 ###

[atreyu]

Do you mean update-grub (versus grub-update)? technically, sudo update-grub

[jmadero]

Yes you are correct. My issue is that from my understanding grub2 automatically hides old kernels (even if you upgrade through package manager), I'm not sure about this logic as it makes it hard to keep track of what kernels are installed. I remember on my system (which is actually the grub.cfg posted, I posted the wrong one, will fix that this evening) that I had a similar issue but I had to take an extra step for the listings to show. Now of course I forget that extra step

[elija]

Make sure that the script files in /etc/grub.d that relate to the missing kernels are marked as executable and then re-run

sudo update-grub