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

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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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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[–] [email protected] 12 points 1 year ago (6 children)

Dual-booting is fine, but this kind of thing does happen.

Either "os-prober" isn't installed or /etc/default/grub has GRUB_DISABLE_OS_PROBER=false.

Fix those, then reinstall the bootloader.

[–] [email protected] 2 points 1 year ago (5 children)

os-prober was installed, but it was indeed disabled.

I went through the process of activating it and remaking the grub configuration. But it seems to not care about Windows, likely because, as stated in my post, it is on a separate physical drive. Probably some way to tell it to look there as well, but I don't know it. I might do some searching of my own later, right now I got shit to do. Booted into my laptop (which I keep with just windows because its ssd is too small for me to have any fun)

[–] [email protected] 1 points 1 year ago

When I dual-boot it is always with a separate drive, less often does MS hose the bootloader in that situation. Normally it is findable. I dont recall havong to point it to anything.

I keep a usb boot drive with a number of images (ventoy), including "super grub boot disk" to get me out of these situations.

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