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Dual Booting NixOS and Windows: Difference between revisions
mention os-prober
imported>Samueldr m (→EFI + Grub: Fixes comment, the previous statement wasn't false, but may have been surprising when compared to the installation section of the manual) |
imported>Symphorien (mention os-prober) |
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== MBR == | This article explains various methods to have the bootloader prompt whether to boot windows or NixOS. | ||
== Autodetection with os-prober == | |||
<code>os-prober</code> is a tool to autodetect which other systems are present on the machine. Grub can be | |||
told to use os-prober to add a menu-entry for each of them. | |||
{{File|/etc/nixos/configuration.nix|nix|<nowiki> | |||
{ config, pkgs, ... }: { | |||
# ... | |||
boot.loader.grub.enable = true; | |||
boot.loader.grub.version = 2; | |||
boot.loader.grub.device = "/dev/sda"; | |||
boot.loader.grub.useOSProber = true; | |||
# ... | |||
}</nowiki>}} | |||
== Manual bootloader configuration == | |||
In case <code>os-prober</code> does not detect your windows partition you can configure your bootloader manually to find it. | |||
=== MBR === | |||
All MBR bootloaders will need at least some configuration to chainload Windows. | All MBR bootloaders will need at least some configuration to chainload Windows. | ||
=== | ==== Grub ==== | ||
Here is an example config: | |||
< | {{File|/etc/nixos/configuration.nix|nix|<nowiki> | ||
{ config, pkgs, ... }: { | |||
# ... | |||
boot.loader.grub.enable = true; | boot.loader.grub.enable = true; | ||
boot.loader.grub.version = 2; | boot.loader.grub.version = 2; | ||
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} | } | ||
''; | ''; | ||
}</ | }</nowiki>}} | ||
Source: https://www.reddit.com/r/NixOS/comments/31lx3i/windows_and_nixos_dual_boot/ | Source: https://www.reddit.com/r/NixOS/comments/31lx3i/windows_and_nixos_dual_boot/ | ||
== EFI == | === EFI === | ||
After setting up a 256mb EFI Partition dualboot should work out of the box (at least for windows10) | After setting up a 256mb EFI Partition dualboot should work out of the box (at least for windows10) | ||
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Source: https://zimbatm.com/journal/2016/09/09/nixos-window-dual-boot/ | Source: https://zimbatm.com/journal/2016/09/09/nixos-window-dual-boot/ | ||
=== | ==== Grub ==== | ||
<nowiki>systemd-boot</nowiki> can not load EFI binaries from other partitions, | <nowiki>systemd-boot</nowiki> can not load EFI binaries from other partitions, | ||
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Here we assume: | Here we assume: | ||
* the EFI partition has been mounted on <nowiki>/boot/efi</nowiki> | * the EFI partition has been mounted on <nowiki>/boot/efi</nowiki> | ||
* < | * <code>$FS_UUID</code> is the UUID of the EFI partition | ||
* the < | * the <code>boot.loader.systemd-boot.enable = true;</code> line added to configuration.nix by <code>nixos-generate-config</code> has been removed | ||
< | {{File|/etc/nixos/configuration.nix|nix|<nowiki> | ||
{ config, ... }: | { config, ... }: | ||
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}; | }; | ||
}; | }; | ||
}</ | }</nowiki>}} | ||
Sources: | Sources: | ||
* [https://wiki.archlinux.org/index.php/GRUB#Windows_installed_in_UEFI-GPT_Mode_menu_entry Arch Wiki GRUB article] | * [https://wiki.archlinux.org/index.php/GRUB#Windows_installed_in_UEFI-GPT_Mode_menu_entry Arch Wiki GRUB article] | ||
* [https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/system/boot/loader/grub/install-grub.pl NixOS GRUB installer] (check the code block beginning with <nowiki># install EFI GRUB</nowiki>) | * [https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/system/boot/loader/grub/install-grub.pl NixOS GRUB installer] (check the code block beginning with <nowiki># install EFI GRUB</nowiki>) | ||