mirror of
https://git.savannah.gnu.org/git/gnuboot.git
synced 2025-01-09 09:07:40 +01:00
Denis 'GNUtoo' Carikli
6e5e4f3421
Before being merged with the commitdc6e1f32c1("Import website-build to build the GNU Boot website."), website-build was a separate git repository. And so, even after the merge, until the commit20d122e94a("website-build: use website from local git repository."), it still worked in the same way and still downloaded the website from git. This prevented merging the website and website-build directories together as the GNU Boot repository also needed to be a valid Untitled website repository as well. Now after this commit, the website is built from the same git tree, so we can simply adjust the build scripts to be able to move things around. In addition of making things more clear for contributors, it also simplify the migration to haunt as with haunt we typically have the haunt.cfg (and the autotools build code if needed) code in the top directory and the markdown files in a subdirectory. Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org> Acked-by: Adrien 'neox' Bourmault <neox@gnu.org>
163 lines
5.1 KiB
Markdown
163 lines
5.1 KiB
Markdown
---
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title: How to install OpenBSD on x86 GNU GRUB payload
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x-unreviewed: true
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...
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This guide is written for OpenBSD 6.1, but it can be adapted easily for other
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versions (of OpenBSD).
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If you want an encrypted install, use SeaBIOS instead of GRUB and go here:
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<https://www.openbsd.org/faq/faq4.html> (official installation guide, which
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says how to use encryption)
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GRUB supports booting OpenBSD kernels directly. However, you're better off
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simply using the SeaBIOS payload; BSD works well with BIOS or UEFI setups.
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GRUB is acceptable for booting unencrypted BSD installations. However,
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encrypted BSD installations will probably require the use of SeaBIOS/Tianocore.
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install61.fs is the installation image for OpenBSD 6.1. Adapt the
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filename accordingly, for a different OpenBSD version or LibertyBSD.
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Prepare the USB drive (in LibertyBSD or OpenBSD)
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------------------------------------------------
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If you downloaded your ISO on a LibertyBSD or OpenBSD system, here is
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how to create the bootable LibertyBSD/OpenBSD USB drive:
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Connect the USB drive and check the system message buffer:
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dmesg | tail
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Check to confirm which drive it is, for example, if you think it's `sd3`:
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disklabel sd3
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Check that it wasn't automatically mounted. If it was, unmount it:
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doas umount /dev/sd3i
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Now write the OpenBSD installer to the drive with `dd`:
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doas dd if=install60.fs of=/dev/rsdXc bs=1M; sync
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You should now be able to boot the installer from your USB drive.
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Continue reading, for information about how to do that.
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Prepare the USB drive (in NetBSD)
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---------------------------------
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[This
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page](https://wiki.netbsd.org/tutorials/how_to_install_netbsd_from_an_usb_memory_stick/)
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on the NetBSD website shows how to create a NetBSD bootable USB drive
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from within NetBSD itself. You should use the `dd` method documented
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there. This will also work with the OpenBSD image.
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Prepare the USB drive (in FreeBSD)
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----------------------------------
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[This page](https://www.freebsd.org/doc/handbook/bsdinstall-pre.md) on
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the FreeBSD website shows how to create a bootable USB drive for
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installing FreeBSD. Use the `dd` on that page. You can also use the same
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instructions with a OpenBSD ISO image.
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Prepare the USB drive (in GNU+Linux)
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------------------------------------
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If you downloaded your ISO on a GNU+Linux system, here is how to create
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the bootable OpenBSD USB drive:
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Connect the USB drive. Check dmesg:
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dmesg
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Check lsblk to confirm which drive it is:
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lsblk
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Check that it wasn't automatically mounted. If it was, unmount it. For
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example:
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sudo umount /dev/sdX\*
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umount /dev/sdX\*
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dmesg told you what device it is. Overwrite the drive, writing your
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distro ISO to it with dd. For example:
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sudo dd if=install61.fs of=/dev/sdX bs=8M; sync
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dd if=install61.fs of=/dev/sdX bs=8M; sync
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You should now be able to boot the installer from your USB drive.
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Continue reading, for information about how to do that.
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Installing OpenBSD without full disk encryption
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-----------------------------------------------
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Press C in GRUB to access the command line:
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grub> kopenbsd (usb0,openbsd1)/6.1/amd64/bsd.rd
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grub> boot
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It will start booting into the OpenBSD installer. Follow the normal
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process for installing OpenBSD.
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Installing OpenBSD with full disk encryption
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--------------------------------------------
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If you are using SeaBIOS, OpenBSD's bootloader will be
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chainloaded automatically and everything will just work.
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Alternatively, it would be good to port OpenBSD either natively as a
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coreboot payload, or port it to libpayload (payload library in coreboot;
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it has a basic C library and a few functions for certain operations e.g.
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text/bitmap).
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Booting
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-------
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Press C in GRUB to access the command line:
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grub> kopenbsd -r sd0a (ahci0,openbsd1)/bsd
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grub> boot
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OpenBSD will start booting. Yay!
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Configuring Grub
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----------------
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If you don't want to drop to the GRUB command line and type in a
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command to boot OpenBSD every time, you can create a GRUB configuration
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that's aware of your OpenBSD installation and that will automatically
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be used by Libreboot.
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On your OpenBSD root partition, create the `/grub` directory and add the file
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`libreboot_grub.cfg` to it. Inside the `libreboot_grub.cfg` add these lines:
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default=0
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timeout=3
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menuentry "OpenBSD" {
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kopenbsd -r sd0a (ahci0,openbsd1)/bsd
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}
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If your OpenBSD installation uses a GPT scheme, use the `gpt4` partition
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instead of `openbsd1`.
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The next time you boot, you'll see the old Grub menu for a few seconds,
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then you'll see the a new menu with only OpenBSD on the list. After 3
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seconds OpenBSD will boot, or you can hit enter to boot.
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Troubleshooting
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===============
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Most of these issues occur when using Libreboot with coreboot's 'text
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mode' instead of the coreboot framebuffer. This mode is useful for
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booting payloads like memtest86+ which expect text-mode, but for OpenBSD
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it can be problematic when they are trying to switch to a framebuffer
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because it doesn't exist.
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Won't boot...something about file not found
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---------------------------------------------
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Your device names (i.e. usb0, usb1, sd0, sd1, wd0, ahci0, hd0, etc) and
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numbers may differ. Use TAB completion.
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