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I run a laptop with a Windows installation and an Ubuntu installation, each on a separate drive. I decided to reformat the Windows SSD and reinstall Windows on it, but that seemed to have removed my ability to select my Ubuntu SSD from the bios as the boot option. I’ve ensured that I installed Windows on the correct drive (they are different brands and sizes).

Why would this happen? Can I resolve this without having to reinstall Ubuntu on the SSD, perhaps using a live usb?

Edit: I used a live USB to boot into a live Ubuntu session so I can run grub-install, running fdisk -l, I was able to see the Ubuntu SSD and it’s partitions intact. However, there is no EFI System partition on the Ubuntu SSD; the parition does however appear on the Windows SSD.

Thanks

LostCoder
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1 Answers1

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Following up on your comment:

I'd suggest trying to boot through a Live Ubuntu CD (USB), and using that to repair GRUB, sounds like something got messed up when you reinstalled Windows. Make sure you have a supported version of Ubuntu wrt. boot-repair.

Make a live Ubuntu installation disk, then, on the Live version, install Boot-Repair.

sudo apt install boot-repair

Run that command, choose the 'recommended repair' option, and it (hopefully!) should fix grub for you. This is of course assuming nothing has happened to the SSD physically (I'm assuming it's all plugged in and not damaged or anything like that).

EDIT: If you're not too comfy using the terminal and commands like that, you can flash a Ubuntu live disk that runs Boot-Repair automatically: https://sourceforge.net/p/boot-repair-cd/home/Home/

n3xtd00rpanda
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