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Cake day: March 12th, 2025

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  • I meant the following:

    1. Find out the Debian package is too old
    2. Create Arch Live USB
    3. Boot Arch Live USB
    4. Copy GRUB config from the Debian install to the current Arch live system
    5. Install the up-to-date GRUB while in the Arch environment

    The bootloader installer package is distro dependent, the bootloader the package installs isn’t. You can boot Debian no matter if the GRUB is installed from Debian stable, Debian Sid, Arch, Fedora or even FreeBSD. Otherwise, dual booting wouldn’t work.

    Like I said, I’ve done that before, though with SystemD Boot instead of GRUB, which was a bit simpler due to how the bootloader is configured.



  • As it’s a bootloader, it should make almost no difference which distribution was used to install it. (I’m not sure if Debian patches their GRUB.) I just used Arch as an example, as it is famous for being up to date. And, no matter where it’s installed from, if you’ve made changes to GRUB’s configuration, you’ll have to copy it over to the live distribution to keep your changes.

    Yes, Debian Sid might be more familiar for Debian users, but that’s it.

    Edit: You said “get the grub debs from Debian sid”, but installing Sid packages on non-Sid systems isn’t something that you should do.