[Solved] How do I make the computer ask which OS I want to boot? | Linus Tech Tips | Page 1

wintry palm Oct 29, 2023, 6:14 AM

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I had Windows on a m.2 drive in the slot with the highest speed, and another m.2 drive in a different slot to store the files. I used Windows for a while and used both m.2 drives. Now I unplugged both m.2 drives and plugged in a SATA drive with Linux (Nobara OS) installed on it. I put the Windows drives back in and was expecting the computer to ask which OS to boot, but it boots whatever is selected in the UEFI as the primary.

From what I saw in the forums, the Linux bootloader is supposed to ask for the options. When I select the Linux drive as the primary from the UEFI, it boots into Linux and doesn't ask either. I have seen people's system ask for OS on boot and they had Windows drive plugged in while they installed Linux. I removed the drives to keep things safe. Is it possible to make the bootloader ask for which OS to boot?

undone crest Oct 29, 2023, 6:37 AM

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Nobara uses GRUB, so you'll likely need os-prober. https://wiki.archlinux.org/title/GRUB section 3.1.2 and 3.1.2.1.

GRUB

wintry palm Oct 29, 2023, 11:27 AM

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undone crest Nobara uses GRUB, so you'll likely need os-prober. https://wiki.archlinux.org/ti...

I ran the os-prober and then grub2-mkconfig (I didn't have grub-mkconfig) but it's still not showing Windows in the boot menu. There's 3 versions of Nobara created by fsync and Memtest and UEFI

undone crest Oct 30, 2023, 1:15 AM

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Try just grub-mkconfig. If you cannot run grub-mkconfig your grub menu wont ever change.

wintry palm Oct 31, 2023, 3:22 AM

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It's saying command not found. I had to run sudo grub2-mkconfig -o /boot/grub2/grub.cfg to update the grub.cfg and reboot. Windows is appearing in the menu now. Thanks.

#[Solved] How do I make the computer ask which OS I want to boot?