Updating rendered os unbootable, boot-repair doesn't find fedora partition

heyo! i.. don’t know what to say. i let my laptop (dual booting fedora 42 and mint 22) update overnight, and when i booted it back up (i had set it to update then turn off), my fedora partition got stuck when booting, hanging indefinitely at Job dev-disk-by\x2duuid-bb43f60d\x2tart running (<time elapsed>/ no limit), i powered my laptop off after 15 minutes of waiting.

i tried booting with earlier kernel versions, but the exact same thing happened no matter the version.

looking around online, i saw people saying it was due to the os checking swap for hibernation data without ever realising there is none, so i went and booted my mint partition to remove the resume argument in the grub command line, to no avail.

i then saw people saying reinstalling grub might just do the trick, so i booted into a boot-repair live session, to see that it didn’t detect the grub with fedora, but only the one from mint (grub was installed once by fedora, then once by mint; i have never been able to properly get rid of that last one, but my computer boots into the first one that lets me boot into fedora and mint by default anyway).

in fact, it didn’t detect fedora as a bootable os at all! when asked which os to boot into by default, fedora didn’t appear and mint was my only option.

so now, i’m stuck. i can’t boot into my main install, haven’t found a way to fix it (yet), and can’t reinstall because my internet is so slow that it would take literal weeks of nonstop installation to have all my software on my pc, which i can’t do since i am required to use this computer all day in places where i don’t always have internet connection (wifi or otherwise).

what should i do?

Can you find a cafe orfree wireless somewhere to download a Workstation or Server iso?

I think with a live usb you can modify your system by booting live and then chroot into your old system and reair it from there.

i never delete any iso i download, so i have one of fedora plasma from a few months ago already (and i think the thumbdrive i put it on still has it flashed)

how would i go about repairing it?

See Vlad’s post at How do I recover an unbootable Fedora Workstation system? - #8 by vgaetera

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thank you so, so much. reinstalling grub by following this guide has made fedora bootable again. marking this as solved now.

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Not a problem :slight_smile:
You did that quite fast, so you must have some good Linux skills, I hope you stick around.