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diff --git a/docs/gnulinux/grub_boot_installer.html b/docs/gnulinux/grub_boot_installer.html new file mode 100644 index 0000000..6853680 --- /dev/null +++ b/docs/gnulinux/grub_boot_installer.html @@ -0,0 +1,137 @@ +<!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>Libreboot documentation: installing GNU/Linux</title> +</head> + +<body> + <header> + <h1>Boot a GNU/Linux installer on USB</h1> + <aside>Or <a href="index.html">back to main index</a></aside> + </header> + + <h2>Prepare the USB drive (in GNU/Linux)</h2> + + <p> + Connect the USB drive. Check dmesg:<br/> + <b>$ dmesg</b><br/> + + Check lsblk to confirm which drive it is:<br/> + <b>$ lsblk</b> + </p> + + <p> + Check that it wasn't automatically mounted. If it was, unmount it. For example:<br/> + <b>$ sudo umount /dev/sdb*</b><br/> + <b># umount /dev/sdb*</b> + </p> + + <p> + dmesg told you what device it is. Overwrite the drive, writing your distro ISO to it with dd. For example:<br/> + <b>$ sudo dd if=gnulinux.iso of=/dev/sdb bs=8M; sync</b><br/> + <b># dd if=gnulinux.iso of=/dev/sdb bs=8M; sync</b> + </p> + + <h2>Booting the USB drive (in GRUB)</h2> + + <p> + Boot it in GRUB using the <i>Parse ISOLINUX config (USB)</i> option (it's in default libreboot grub.cfg, at least). + + A new menu should appear in GRUB, showing the boot options for that distro; this is a GRUB menu, converted from the usual + ISOLINUX menu provided by that distro. + </p> + + <p> + If the ISOLINUX parser won't work, then press C to get to GRUB command line.<br/> + grub> <b>ls</b><br/> + + Get the device from above output, eg (usb0). Example:<br/> + grub> <b>cat (usb0)/isolinux/isolinux.cfg</b><br/> + + Either this will show the ISOLINUX menuentries for that ISO, or link to other .cfg files, for example /isolinux/foo.cfg.<br/> + + If it did that, then you do:<br/> + grub> <b>cat (usb0)/isolinux/foo.cfg</b><br/> + + And so on, until you find the correct menuentries for ISOLINUX. + </p> + + <p> + Now look at the ISOLINUX menuentry. It'll look like:<br/> + <b> + kernel /path/to/kernel<br/> + append PARAMETERS initrd=/path/to/initrd MAYBE_MORE_PARAMETERS<br/> + </b> + + GRUB works the same way, but in it's own way. Example GRUB commands:<br/> + grub> <b>linux (usb0)/path/to/kernel PARAMETERS MAYBE_MORE_PARAMETERS</b><br/> + grub> <b>initrd (usb0)/path/to/initrd</b><br/> + grub> <b>boot</b><br/> + + Of course this will vary from distro to distro. If you did all that correctly, it should now be booting the ISO + the way you specified. + </p> + + <h1>Troubleshooting</h1> + + <p> + Most of these issues occur when using libreboot with coreboot's 'text mode' instead of the coreboot framebuffer. + This mode is useful for booting payloads like memtest86+ which expect text-mode, but for GNU/Linux distributions + it can be problematic when they are trying to switch to a framebuffer because it doesn't exist. + </p> + + <p> + In most cases, you should use the vesafb ROM's. Example filename: libreboot_ukdvorak_vesafb.rom. + </p> + + <h2>parabola won't boot in text-mode</h2> + + <p> + Use one of the ROM images with vesafb in the filename (uses coreboot framebuffer instead of text-mode). + </p> + + <h2>debian-installer (trisquel net install) graphical corruption in text-mode</h2> + <p> + When using the ROM images that use coreboot's "text mode" instead of the coreboot framebuffer, + booting the Trisquel net installer results in graphical corruption because it is trying to switch to a framebuffer which doesn't + exist. Use that kernel parameter on the 'linux' line when booting it:<br/> + <b>vga=normal fb=false</b> + </p> + + <p> + Tested in Trisquel 6 (and 7). This forces debian-installer to start in text-mode, instead of trying to switch to a framebuffer. + </p> + + <p> + If selecting text-mode from a GRUB menu created using the ISOLINUX parser, you can press E on the menu entry to add this. + Or, if you are booting manually (from GRUB terminal) then just add the parameters. + </p> + + <p> + This workaround was found on the page: <a href="https://www.debian.org/releases/stable/i386/ch05s04.html">https://www.debian.org/releases/stable/i386/ch05s04.html</a>. + It should also work for gNewSense, Debian and any other apt-get distro that provides debian-installer (text mode) net install method. + </p> + +<hr/> + + <p> + Copyright © 2014 Francis Rowe <info@gluglug.org.uk><br/> + This document is released under the Creative Commons Attribution-ShareAlike 4.0 International Public License and all future versions. + A copy of the license can be found at <a href="../license.txt">../license.txt</a>. + </p> + + <p> + This document is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See <a href="../license.txt">../license.txt</a> for more information. + </p> + +</body> +</html> |