pathmann / gnome-shell-extension-customreboot

Reboot into a different OS directly from GNOME shell.

Custom Reboot GNOME Shell Extension

Inspired by and based on patriziobruno/grubreboot-gnome-shell-extension.

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Bootloader	Supported
systemd-boot	Yes
GRUB	Yes

A gnome-shell extension to add a "Custom Restart..." option to the shell system panel that allows you to choose what OS you want to boot into, after which it triggers the typical end session dialog for restart.

This extension needs permissions for gnome-shell to read your /boot partition, please verify your Linux distribution documentation.

Systemd-boot

It's able to set the one-shot default using bootctl set-oneshot ID.

The presented options are parsed from bootctl list.

When you select the operating system to reboot into, you'll be required to input your password because of required permissions to run bootctl which set EFI variables.

GRUB

It's able to set the default menu entry using grub-reboot title

The presented options are parsed from the grub config.

When you select the operating system to reboot into, you'll be required to input your password because of required permissions to run grub-reboot.

Caveats

I've only tested this on Arch Linux running gnome 3.38 and systemd-boot. Please let me know if you run into issues on other distros, bootloaders, and GNOME shell versions.

Pull requests welcome!