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| author | Francis Rowe <info@gluglug.org.uk> | 2015-11-06 22:43:29 +0000 |
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| committer | Francis Rowe <info@gluglug.org.uk> | 2015-11-07 04:45:09 +0000 |
| commit | 95259e28ef047923258434898113d70c8e544eab (patch) | |
| tree | 1c0501bf4c7df1c31948184dabfc1e7c4c215a6e /docs/gnulinux/grub_config.html | |
| parent | 707f9383a8189b0054730134340f20709f56f976 (diff) | |
| download | librebootfr-95259e28ef047923258434898113d70c8e544eab.tar.gz librebootfr-95259e28ef047923258434898113d70c8e544eab.zip | |
convert documentation to texinfo
Diffstat (limited to 'docs/gnulinux/grub_config.html')
| -rw-r--r-- | docs/gnulinux/grub_config.html | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/docs/gnulinux/grub_config.html b/docs/gnulinux/grub_config.html deleted file mode 100644 index 9cc0d772..00000000 --- a/docs/gnulinux/grub_config.html +++ /dev/null @@ -1,223 +0,0 @@ -<!DOCTYPE html> -<html> -<head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - - <style type="text/css"> - @import url('../css/main.css'); - </style> - - <title>Writing a GRUB configuration file</title> -</head> - -<body> - <div class="section"> - <h1 id="pagetop">Writing a GRUB configuration file</h1> - <p> - This section is for those systems which use the GRUB payload. - <b>If your system uses the depthcharge payload, ignore this section.</b> - </p> - <p> - <a href="index.html">Back to index</a> - </p> - </div> - - <div class="section"> - - <h1>Table of Contents</h1> - <ul> - <li> - <a href="#example_modifications">Example modifications for <i>grubtest.cfg</i></a> - <ul> - <li><a href="#example_modifications_trisquel">Trisquel GNU/Linux-libre</a></li> - <li><a href="#example_modifications_parabola">Parabola GNU/Linux-libre</a></li> - </ul> - </li> - </ul> - - </div> - - <div class="section"> - <h2 id="example_modifications">Example modifications for <i>grubtest.cfg</i></h2> - - <p> - These are some common examples of ways in which the grubtest.cfg file can be modified. - </p> - - <div class="subsection"> - <h2>Obvious option: don't even modify the built-in grub.cfg</h2> - <p> - Use the menuentry that says something like <i>Search for GRUB outside CBFS</i>. Assuming that you - have a grub.cfg file at /boot/grub/ in your installed distro, this will generate a new menuentry in - the GRUB menu. Use that to boot. - </p> - <p> - Then do this as root:<br/> - $ <b>cd /boot/grub/</b><br/> - $ <b>ln -s grub.cfg libreboot_grub.cfg</b> - </p> - <p> - After that, your system should then boot automatically. - </p> - </div> - - <div class="subsection"> - - <h2>Trisquel with full disk encryption, custom partition layout</h2> - <p> - GRUB can boot from a symlink (or symlinks) pointing to your kernel/initramfs, whether from an unencrypted or encrypted /boot/. You - can create your own custom symlink(s) but you have to manually update them when updating your kernel. This guide (not maintained by - the libreboot project) shows how to configure Trisquel to automatically update that symlink on every kernel update. - <a href="http://www.rel4tion.org/people/fr33domlover/libreboot-fix/">http://www.rel4tion.org/people/fr33domlover/libreboot-fix/</a> - </p> - <p> - TODO: adapt those notes and put them here. The author said that it was CC-0, so re-licensing under GFDL shouldn't be a problem. - </p> - - </div> - - <div class="subsection"> - <h3 id="example_modifications_trisquel">Trisquel GNU/Linux-libre</h3> - - <p> - As an example, on my test system in /boot/grub/grub.cfg (on the HDD/SSD) I see for the main menu entry: - </p> - <ul> - <li><b>linux /boot/vmlinuz-3.15.1-gnu.nonpae root=UUID=3a008e14-4871-497b-95e5-fb180f277951 ro crashkernel=384M-2G:64M,2G-:128M quiet splash $vt_handoff</b></li> - <li><b>initrd /boot/initrd.img-3.15.1-gnu.nonpae</b></li> - </ul> - - <p> - <b>ro</b>, <b>quiet</b>, <b>splash</b>, <b>crashkernel=384M-2G:64M,2G-:128M</b> and - <b>$vt_handoff</b> can be safely ignored. - </p> - - <p> - I use this to get my partition layout:<br/> - $ <b>lsblk</b> - </p> - - <p> - In my case, I have no /boot partition, instead /boot is on the same partition as / on sda1. - Yours might be different. In GRUB terms, sda means ahci0. 1 means msdos1, or gpt1, depending - on whether I am using MBR or GPT partitioning. Thus, /dev/sda1 is GRUB is (ahci0,msdos1) or - (ahci0,gpt1). In my case, I use MBR partitioning so it's (ahci0,msdos1). - 'msdos' is a GRUB name simply because this partitioning type is traditionally used by MS-DOS. - It doesn't mean that you have a proprietary OS. - </p> - - <p> - Trisquel doesn't keep the filenames of kernels consistent, instead it keeps old kernels and - new kernel updates are provided with the version in the filename. This can make GRUB payload - a bit tricky. Fortunately, there are symlinks /vmlinuz and /initrd.img - so if your /boot and / are on the same partition, you can set GRUB to boot from that. - These are also updated automatically when installing kernel updates from your distributions - apt-get repositories. - <b> - Note: when using <a href="http://jxself.org/linux-libre">jxself kernel releases</a>, - these are not updated at all and you have to update them manually. - </b> - </p> - - <p> - For the GRUB payload grubtest.cfg (in the 'Load Operating System' menu entry), we therefore have (in this example):<br/> - <b>set root='ahci0,msdos1'</b><br/> - <b>linux /vmlinuz root=UUID=3a008e14-4871-497b-95e5-fb180f277951</b><br/> - <b>initrd /initrd.img</b> - </p> - - <p> - Optionally, you can convert the UUID to its real device name, for example /dev/sda1 in this case. - sdX naming isn't very reliable, though, which is why UUID is used for most distributions. - </p> - - <p> - Alternatively, if your /boot is on a separate partition then you cannot rely on the /vmlinuz and /initrd.img symlinks. - Instead, go into /boot and create your own symlinks (update them manually when you install a new kernel update).<br/> - $ <b>sudo -s</b> (or <b>su -</b>)<br/> - # <b>cd /boot/</b><br/> - # <b>rm -f vmlinuz initrd.img</b><br/> - # <b>ln -s <u>yourkernel</u> ksym</b><br/> - # <b>ln -s <u>yourinitrd</u> isym</b><br/> - # <b>exit</b> - </p> - - <p> - Then your grubtest.cfg menu entry (for payload) becomes like that, for example if / was on sda2 and /boot was on sda1:<br/> - <b>set root='ahci0,msdos1'</b><br/> - <b>linux /ksym root=/dev/sda2</b><br/> - <b>initrd /isym</b> - </p> - - <p> - There are lots of possible variations so please try to adapt. - </p> - - </div> - - <div class="subsection"> - <h3 id="example_modifications_parabola">Parabola GNU/Linux-libre</h3> - - <p> - You can basically adapt the above. Note however that Parabola does not keep old kernels still installed, and the file names - are always consistent, so you don't need to boot from symlinks, you can just use the real thing directly. - </p> - </div> - - <p> - <a href="#pagetop">Back to top of page.</a> - </p> - - </div> - - <div class="section"> - - <p> - Copyright © 2014, 2015 Francis Rowe <info@gluglug.org.uk><br/> - Permission is granted to copy, distribute and/or modify this document - under the terms of the GNU Free Documentation License, Version 1.3 - or any later version published by the Free Software Foundation; - with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. - A copy of the license can be found at <a href="../gfdl-1.3.txt">../gfdl-1.3.txt</a> - </p> - - <p> - Updated versions of the license (when available) can be found at - <a href="https://www.gnu.org/licenses/licenses.html">https://www.gnu.org/licenses/licenses.html</a> - </p> - - <p> - UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE - EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS - AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF - ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS, - IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION, - WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR - PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS, - ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT - KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT - ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU. - </p> - <p> - TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE - TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION, - NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT, - INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES, - COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR - USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN - ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR - DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR - IN PART, THIS LIMITATION MAY NOT APPLY TO YOU. - </p> - <p> - The disclaimer of warranties and limitation of liability provided - above shall be interpreted in a manner that, to the extent - possible, most closely approximates an absolute disclaimer and - waiver of all liability. - </p> - - </div> - -</body> -</html> |