version 2, including all changes.
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IanMcDonald |
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<verbatim> |
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NAME |
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update-grub - program to generate GRUB's menu.lst file |
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SYNOPSIS |
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update-grub [-y] |
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OPTIONS |
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-y Assume 'yes' on all questions. |
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DESCRIPTION |
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update-grub is a program used to generate the menu.lst file used by the |
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grub bootloader. It works by looking in /boot for all files which |
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start with "vmlinuz-". They will be treated as kernels, and grub menu |
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entries will be created for each. It will also create the initial |
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menu.lst if none exists, after prompting the user. It will also add |
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initrd lines for ramdisk images found with the same version as kernels |
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found. e.g. /boot/vmlinuz-2.4.5 and /boot/initrd-2.4.5 will cause a |
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line of "initrd=/boot/initrd-2.4.5 or similar to be added for the ker- |
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nel entry in the menu.lst. |
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After update-grub has been run for the first time, the user is required |
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to edit the generated menu.lst. The user must set the two options |
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update-grub uses. Then re-run the update-grub script to update the |
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menu.lst file using the default's that have been set. |
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IanMcDonald |
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</verbatim> |
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<pre> |
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IanMcDonald |
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These are the options passed to the linux kernel: |
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# kopt=root=/dev/hda1 ro |
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Everything after "kopt=" is passed to the kernel as parameters. See |
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[bootparam(7)] for more information. |
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IanMcDonald |
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This is the grub device from which grub loads the kernel: |
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# groot=(hd0,1) |
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(hd0,1) is a partition in grub notation. See grub(8) for more informa- |
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tion. |
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This option controls if grub should create the alternative boot options |
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in the menu entries |
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# alternative=true |
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# alternative=false |
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This option controls if grub should lock the alternative boot options |
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IanMcDonald |
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see [grub(8)] for more information. |
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IanMcDonald |
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# lockalternative=true |
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# lockalternative=false |
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This option controls if grub should lock the old kernels. |
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# lockold=true |
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# lockold=false |
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This options controls what is used for the alternative boot options, |
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multiple altoptions lines are allowed. |
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# altoptions=(some description) some kernel command line options |
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# altoptions=(recovery option) single |
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The description is placed in '()' and the kernel command line options |
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follow that. |
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# updatedefault=true # updatedefault=false |
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This option controls if grub should update the default entry to keep |
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booting the same kernel even if a new one is installed. |
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The update-grub script can be ran automagically from the |
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/etc/kernel-img.conf file by adding the following lines: |
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postinst_hook = update-grub |
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postrm_hook = update-grub |
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do_bootloader = no |
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For further information related to /etc/kernel-img.conf, see the man- |
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page [kernel-img.conf(5)]. |
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SEE ALSO |
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[grub(8)], [grub-install(8)], [kernel-img.conf(5)] (contained in the kernel- |
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package package), [bootparam(7)]. |
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IanMcDonald |
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The full documentation for grub is maintained as a Texinfo manual in |
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the grub-doc package. If the info and grub programs are properly |
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installed at your site, the command |
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info grub |
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should give you access to the complete manual. |
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AUTHOR |
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This manual page was written by Jason Thomas <jason@debian.org>, for |
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the Debian GNU/Linux system (but may be used by others). |
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IanMcDonald |
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</pre> |
