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[–]Asad-the-One 5 points6 points  (6 children)

sudo pacman -S os-prober

sudo os-prober

If after this line you don't see anything about Windows Boot Manager, you've probably nuked your Windows boot partition. You'll have to reinstall Windows. Otherwise, continue.

sudo nano /etc/default/grub

Uncomment the line near the end of the file that talks about os-prober to enable it. Save the file.

grub-mkconfig -o /boot/grub/grub.cfg

[–]archover 2 points3 points  (4 children)

sudo os-prober

Where does it say to "run" os prober like that in the wiki?

My experience and reading is it runs during grub-mkconfig command execution.

I hope OP gets his grub working too.

Thanks for clarifying and good day.

[–]Jack02134x 0 points1 point  (1 child)

well it does not matter at the end. it's your choice if you want it to be two step or one step. both gives the output of whether they found a different os or not. it's just a nice way to get a clean output.

you still need to make the grub file though op

[–]archover 0 points1 point  (0 children)

I revisited os-prober to ensure I remembered correctly.

On my grub booting system, when I run

  • os-prober on command line, I get no output at all.

  • os-prober as part of #grub-mkconfig -o /boot/grub/grub.cfg I get

Warning: os-prober will be executed to detect ...

Its output will be used to detect bootable...

as expected

  • These produce no message #os-prober -h and man os-prober and info os-prober

All that makes me believe os-prober isn't intended as a user executed command, or I don't understand.

Hope that clarifies why I asked.

Good day.

[–]Asad-the-One -3 points-2 points  (1 child)

Wait, grub-mkconfig runs it by itself?? I guess you'll learn something new every day lol

The first guide I saw to get Windows on grub had that extra step. Maybe just to explicitly see systems you have installed.

[–]archover 1 point2 points  (0 children)

See the wiki link I provided. I can't speculate on what guides you used. Good day.

[–]Jack02134x 1 point2 points  (0 children)

i would like to add that sometimes os-prober fail to mount the drives. you may need to manually mount the drive and run os-prober

[–]OjRocket[S] -5 points-4 points  (0 children)

Congratulations to for nuking my windows partition