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[SOLVED-See Comments] My "Windows" boot entry has disappeared from the EFI menu (pawb.social)

submitted 7 months ago* (last edited 7 months ago) by VinesNFluff@pawb.social to c/techsupport@lemmy.world

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Title. I dual-boot Windows and Linux. I always saw people making "WINDOWS DELETED MY LINUX BOOTLOADER OMGOMG" posts and it had never happened to me. Now, the opposite has happened. I switched from EndeavourOS to OpenSUSE and now my windows install is no longer selectable on boot.

I keep Windows in a separate drive entirely, so instead of using grub, I use the EFI's boot-select menu thingamafuck (look I don't know jargon okay?) to choose Windows when I need it.

Well today it's not there. Only the Linux entries show up. The Windows partition itself seems to be in good order, like, I can access it from within Linux no problem.

But yeah it doesn't show up on my EFI selector thingie. I imagine I could get the EFI Shell going, but I have no idea how to use THAT either.

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[–] VinesNFluff@pawb.social 2 points 7 months ago* (last edited 7 months ago) (1 children)

I cannot get into Windows in any way. I CAN get into Linux with no problem though. Anyway.

(as I said in my post--) My intention is to not use grub at all and to choose windows through my bios menu when I do need it. Which is what I had been doing for the past year.

It's just that its entry in the bios menu has disappeared.

[–] alphapuggle@programming.dev 1 points 7 months ago (1 children)

In that case, these steps should work, but you can safely ignore the grub steps at the end. (I totally misread the NOT wanting to use grub part lol)

[–] VinesNFluff@pawb.social 2 points 7 months ago (1 children)

I managed to revive windows but now Linux doesn't show up, lmao

But I think I know what to do about that. Give me like 10 and I'll report back.

[–] alphapuggle@programming.dev 2 points 7 months ago

Your Linux install may be using the same EFI partition as your Windows disk, even though the filesystem is on another drive. Most installers prefer existing EFI partitions. You may have to modify your fstab file to use an EFI partition on your Linux drive instead, in which case they should remain separate and not mess with each other again.