Gnu grub version 2.6

[leanneismylife]

My steam deck stuck on gnu grub version 2.6 command screen when booting.Everything was fine before the update a few days ago.i installed dual boot on my steam deck,booting to windows is working fine.Just having trouble on steam os side.

[kilésengati]

Sure it isn't a Windows issue? From my experience on other hardware, Windows 10/11 don't really play nice dual-booting with GRUB, sometimes messing up my entire Linux install. Hence I switched to distros using systemd and had only minor issues since. However, this isn't really an option on the Deck.

https://www.reddit.com/r/SteamDeck/comments/sy3298/warning_to_windows_dualbooters/

I've made the experience, that with GRUB and Windows, you are only one mandatory Windows update away from having your Linux system bricked by Micro$oft, hence I stopped using GRUB. No idea why Valve isn't shipping SteamOS 3 with systemd.

You'll probably have to recover/re-setup your Steam Deck manually:

https://help.steampowered.com/en/faqs/view/1B71-EDF2-EB6D-2BB3

Always make backups!

[nix]

Point of order: the Deck *does* use systemd (it would be very hard to do the things or does without it: it particularly makes the game mode / desktop mode switch relatively easy to implement rather than a flaming nightmare). Of course, since grub is the bootloader it runs before systemd can affect anything :)

I concur that unless you want to do some really quite painful debugging *and* are enough of an expert that you've already started and are finding it fun, a factory reset is definitely the way to go.

[leanneismylife]

Thank you,i think the only option i have is to reinstall both os

[Kage Goomba]

Yeah - Grub and Microsoft DO NOT get along at all.
Its a tenuous relationship and 99% of the time its Windows breaking things.

This is why many resort to Virtual Machining Windows when doing the multi-boot option or at least a Motherboard smart enough to keep them segregated. (Obviously not really an option on SteamDeck - just saying the pain you feel is shared everywhere - no matter the platform)

Grub is king yes - but Windows can mess that up with very little effort.