Dual Booting NixOS and Windows: Difference between revisions
→Grub: Remove old info
imported>Sinity No edit summary |
(→Grub: Remove old info) |
||
| (14 intermediate revisions by 8 users not shown) | |||
| Line 1: | Line 1: | ||
= | This section explains various methods to have the bootloader prompt whether to boot windows or NixOS. | ||
== Autodetection == | |||
=== systemd-boot === | |||
When {{ic|systemd-boot}} is installed to the same EFI System Partition (ESP) that Windows uses, it will automatically detect the Windows installation ({{ic|/EFI/Microsoft/Boot/bootmgfw.efi}}) and present it as a boot option. | |||
You can verify detected boot loaders by running the {{ic|bootctl}} command. | |||
A system pre-installed with Windows might have a small ESP partition size that is not sufficient to store the kernel and initrd files for multiple NixOS generations. One solution is to create an additional [https://uapi-group.org/specifications/specs/boot_loader_specification/#the-partitions XBOOTLDR] partition and configure {{ic|systemd-boot}} to use it: | |||
{{File|/etc/nixos/configuration.nix|nix|<nowiki> | |||
{ | |||
fileSystems."/boot" = | |||
{ device = "/dev/disk/by-uuid/57D4-A2B2"; | |||
fsType = "vfat"; | |||
}; | |||
fileSystems."/efi" = | |||
{ device = "/dev/disk/by-uuid/3280-5418"; | |||
fsType = "vfat"; | |||
}; | |||
boot.loader.systemd-boot.enable = true; | |||
boot.loader.efi.canTouchEfiVariables = true; | |||
boot.loader.efi.efiSysMountPoint = "/efi"; | |||
boot.loader.systemd-boot.xbootldrMountPoint = "/boot"; | |||
} | |||
</nowiki>}} | |||
== | === os-prober === | ||
<code>os-prober</code> is a tool to autodetect which other systems are present on the machine. Grub can be | <code>os-prober</code> is a tool to autodetect which other systems are present on the machine. Grub can be | ||
| Line 12: | Line 39: | ||
# ... | # ... | ||
boot.loader.grub.enable = true; | boot.loader.grub.enable = true; | ||
boot.loader.grub.device = "nodev"; | |||
boot.loader.grub.device = " | |||
boot.loader.grub.useOSProber = true; | boot.loader.grub.useOSProber = true; | ||
# ... | # ... | ||
| Line 19: | Line 45: | ||
}</nowiki>}} | }</nowiki>}} | ||
== Manual | == Manual configuration == | ||
In case <code>os-prober</code> does not detect your windows partition you can configure your bootloader manually to find it. | In case <code>os-prober</code> does not detect your windows partition you can configure your bootloader manually to find it. | ||
| Line 26: | Line 52: | ||
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 | ==== Grub ==== | ||
Here is an example config: | Here is an example config: | ||
| Line 34: | Line 60: | ||
# ... | # ... | ||
boot.loader.grub.enable = true; | boot.loader.grub.enable = true; | ||
boot.loader.grub.device = "/dev/sda"; | boot.loader.grub.device = "/dev/sda"; | ||
boot.loader.grub.extraEntries = '' | boot.loader.grub.extraEntries = '' | ||
| Line 44: | Line 69: | ||
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/ | ||
=== | === UEFI === | ||
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) | ||
| Line 53: | Line 78: | ||
==== Grub ==== | ==== Grub ==== | ||
Here we assume: | Here we assume: | ||
| Line 93: | Line 115: | ||
''; | ''; | ||
version = 2; | version = 2; | ||
}; | |||
}; | |||
}</nowiki>}} | |||
==== EFI with multiple disks ==== | |||
When Windows is installed on another disk with a separate EFI partition, the following might work: | |||
{{File|/etc/nixos/configuration.nix|nix|<nowiki> | |||
{ config, ... }: | |||
{ | |||
boot.loader = { | |||
efi.canTouchEfiVariables = true; | |||
grub = { | |||
enable = true; | |||
devices = [ "nodev" ]; | |||
efiSupport = true; | |||
useOSProber = true; | |||
}; | }; | ||
}; | }; | ||
| Line 103: | Line 144: | ||
Setting RTC time standard to localtime, compatible with Windows in its default configuration: | Setting RTC time standard to localtime, compatible with Windows in its default configuration: | ||
{{ | {{file|/etc/nixos/configuration.nix|nix|<nowiki> | ||
{ | { | ||
time.hardwareClockInLocalTime = true; | time.hardwareClockInLocalTime = true; | ||
}</nowiki>}} | }</nowiki>}} | ||
See [https://wiki.archlinux.org/title/System_time#Time_standard Arch Linux wiki#System time]. | |||
* [https://wiki.archlinux.org/index.php/GRUB#Windows_installed_in_UEFI-GPT_Mode_menu_entry Arch | |||
== See also == | |||
* [https://wiki.archlinux.org/index.php/GRUB#Windows_installed_in_UEFI-GPT_Mode_menu_entry Arch Linux wiki#GRUB] | |||
* [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>) | ||
[[Category:Cookbook]][[Category:NixOS]] | |||