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-   -   add a entry for new kernel to grub (https://www.linuxquestions.org/questions/linux-kernel-70/add-a-entry-for-new-kernel-to-grub-745840/)

theacerguy 08-07-2009 10:55 AM
add a entry for new kernel to grub
 
hi all,
i have just installed a new kernel for my aspire one (debian lenny) but there isnt a option for it in GRUB
i tried adding my own which the contents of /boot/grub/menu.lst would be:
Quote:
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-legacy-doc/.

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not change this entry to 'saved' or your
# array will desync and will not let you boot your system.
default 0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 5

# Pretty colours
color cyan/blue white/blue

## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret

#
# examples
#
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#

#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=/dev/sda1 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,0)

## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet

## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(single-user) single
# altoptions=(single-user mode) single

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all

## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##
title Debian GNU/Linux, kernel 2.6.29.4
root (hd0,0)
kernel /boot/vmlinuz-2.6.29.4 root=/dev/sda1 ro quiet

title Debian GNU/Linux, kernel 2.6.26-1-686
root (hd0,0)
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/sda1 ro quiet
initrd /boot/initrd.img-2.6.26-1-686

title Debian GNU/Linux, kernel 2.6.26-1-686 (single-user mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/sda1 ro single
initrd /boot/initrd.img-2.6.26-1-686

### END DEBIAN AUTOMAGIC KERNELS LIST
and the original is:
Quote:
# menu.lst - See: grub(8), info grub, update-grub(8)
# grub-install(8), grub-floppy(8),
# grub-md5-crypt, /usr/share/doc/grub
# and /usr/share/doc/grub-legacy-doc/.

## default num
# Set the default entry to the entry number NUM. Numbering starts from 0, and
# the entry number 0 is the default if the command is not used.
#
# You can specify 'saved' instead of a number. In this case, the default entry
# is the entry saved with the command 'savedefault'.
# WARNING: If you are using dmraid do not change this entry to 'saved' or your
# array will desync and will not let you boot your system.
default 0

## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 5

# Pretty colours
color cyan/blue white/blue

## password ['--md5'] passwd
# If used in the first section of a menu file, disable all interactive editing
# control (menu entry editor and command-line) and entries protected by the
# command 'lock'
# e.g. password topsecret
# password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
# password topsecret

#
# examples
#
# title Windows 95/98/NT/2000
# root (hd0,0)
# makeactive
# chainloader +1
#
# title Linux
# root (hd0,1)
# kernel /vmlinuz root=/dev/hda2 ro
#

#
# Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST

### BEGIN AUTOMAGIC KERNELS LIST
## lines between the AUTOMAGIC KERNELS LIST markers will be modified
## by the debian update-grub script except for the default options below

## DO NOT UNCOMMENT THEM, Just edit them to your needs

## ## Start Default Options ##
## default kernel options
## default kernel options for automagic boot options
## If you want special options for specific kernels use kopt_x_y_z
## where x.y.z is kernel version. Minor versions can be omitted.
## e.g. kopt=root=/dev/hda1 ro
## kopt_2_6_8=root=/dev/hdc1 ro
## kopt_2_6_8_2_686=root=/dev/hdc2 ro
# kopt=root=/dev/sda1 ro

## default grub root device
## e.g. groot=(hd0,0)
# groot=(hd0,0)

## should update-grub create alternative automagic boot options
## e.g. alternative=true
## alternative=false
# alternative=true

## should update-grub lock alternative automagic boot options
## e.g. lockalternative=true
## lockalternative=false
# lockalternative=false

## additional options to use with the default boot option, but not with the
## alternatives
## e.g. defoptions=vga=791 resume=/dev/hda5
# defoptions=quiet

## should update-grub lock old automagic boot options
## e.g. lockold=false
## lockold=true
# lockold=false

## Xen hypervisor options to use with the default Xen boot option
# xenhopt=

## Xen Linux kernel options to use with the default Xen boot option
# xenkopt=console=tty0

## altoption boot targets option
## multiple altoptions lines are allowed
## e.g. altoptions=(extra menu suffix) extra boot options
## altoptions=(single-user) single
# altoptions=(single-user mode) single

## controls how many kernels should be put into the menu.lst
## only counts the first occurence of a kernel, not the
## alternative kernel options
## e.g. howmany=all
## howmany=7
# howmany=all

## should update-grub create memtest86 boot option
## e.g. memtest86=true
## memtest86=false
# memtest86=true

## should update-grub adjust the value of the default booted system
## can be true or false
# updatedefaultentry=false

## should update-grub add savedefault to the default options
## can be true or false
# savedefault=false

## ## End Default Options ##
title Debian GNU/Linux, kernel 2.6.26-1-686
root (hd0,0)
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/sda1 ro quiet
initrd /boot/initrd.img-2.6.26-1-686

title Debian GNU/Linux, kernel 2.6.26-1-686 (single-user mode)
root (hd0,0)
kernel /boot/vmlinuz-2.6.26-1-686 root=/dev/sda1 ro single
initrd /boot/initrd.img-2.6.26-1-686

### END DEBIAN AUTOMAGIC KERNELS LIST
please help me to get my new kernel for wifi
thanks,
theacerguy

b0uncer 08-08-2009 05:59 AM
What's the problem (or did I miss it?), does it not boot, is the new kernel not found or what? Did you check that the files you added to the config really exist under /boot? Your entry looks just fine, except that it doesn't seem to contain the initrd line (does your kernel not use an initrd file, like they usually do?) and that you have added it between the BEGIN... and END...AUTOMAGIC... lines, where the comments clearly say you should not add custom entries. Instead add manually-written boot entries outside the automatically-handled area, either before the BEGIN AUTOMAGIC... line or after the END...AUTOMAGIC...

In short,
- check that the new files are under /boot and what their filenames are
- add corresponding title, root, kernel and initrd lines (initrd only if your new kernel uses initrd file), usually by copying old ones and modifying them as needed
- if booting fails, post error message(s) here

For future posts, you don't need to post the comment lines (starting with #) unless they contain something valuable. Commented-out examples etc. aren't helpful here, and could have been omitted to make the post shorter..in this case you could just have posted what you added to the original configuration, to make it really short and thus easier to scroll through.

b0uncer 08-08-2009 06:00 AM
Sorry for dual post, seems like LQ hit me again..I'm pretty sure I clicked just once.

I'll add to the previous post that if you install new kernel through package manager, you should get the Grub entry automatically (it's then placed between the BEGIN... and END...AUTOMAGIC... lines, see comments in the file; probably your custom-added entries between those lines are wiped out). If you compile your kernel manually, then you need to add the lines the way you did. And if you compile manually, make sure you know if you need the initrd file or not, and if you do, remember to copy it to /boot in addition to the kernel file.

theacerguy 08-08-2009 06:24 AM
Quote:
Originally Posted by b0uncer (Post 3635640)
What's the problem (or did I miss it?), does it not boot, is the new kernel not found or what? Did you check that the files you added to the config really exist under /boot? Your entry looks just fine, except that it doesn't seem to contain the initrd line (does your kernel not use an initrd file, like they usually do?) and that you have added it between the BEGIN... and END...AUTOMAGIC... lines, where the comments clearly say you should not add custom entries. Instead add manually-written boot entries outside the automatically-handled area, either before the BEGIN AUTOMAGIC... line or after the END...AUTOMAGIC...

In short,
- check that the new files are under /boot and what their filenames are
- add corresponding title, root, kernel and initrd lines (initrd only if your new kernel uses initrd file), usually by copying old ones and modifying them as needed
- if booting fails, post error message(s) here

For future posts, you don't need to post the comment lines (starting with #) unless they contain something valuable. Commented-out examples etc. aren't helpful here, and could have been omitted to make the post shorter..in this case you could just have posted what you added to the original configuration, to make it really short and thus easier to scroll through.
well i ran update-grub and it added the entry and it just goes into panic... i will post messages soon

theacerguy 08-09-2009 03:07 AM
yer this is the only distro were that isnt default but i ran update-grub and it is there but goes into panic


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