Re: [PLUG] Reinstall of Linux didn't work

While I'm sure there are grub ninjas that are good at working from the grub rescue prompt, for me, I boot from a USB live cd and then fix these issues by mounting the Linux partition, then bind mounting (mount --bind) /proc /sys and /dev to those same paths on the mounted linux partition. I chroot to that partition and then reinstall grub. For Ubuntu that would "update grub" (if something has changed- usually doesn't hurt to run anyway) and then grub-install /dev/<whatever the disk is for the mount partition you are in> so if you had mounted /dev/sda1 then you would do grub-install /dev/sda.

I hope that makes some sense.

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Keith C. Perry, MS E.E.

Managing Member, DAO Technologies LLC

(O) +1.215.525.4165 x2033

(M) +1.215.432.5167

www.daotechnologies.com

From: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org>
To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org>
Sent: Monday, July 3, 2023 3:40:24 PM
Subject: [PLUG] Reinstall of Linux didn't work

I'll do my best to keep this succinct.

First, some background. This computer was running Windows and Linux alongside each other, using grub to allow me to boot into the Ubuntu installation on sda, and the Windows 10 insulation on sdb. All work relatively well until recently.

Rather than continue wrestling with my installation of Linux refusing to update anything (no reason to get into that now), I figured a fresh installation over it was probably a good idea. Since the computer was running Ubuntu, I installed in Ubuntu based distribution over it.

First time, I used the custom installation option, selecting what I thought were the correct partitions for booth, swap, etc. No luck. I got an error saying no such device, unknown file system, entering rescue mode. I figured I had done something wrong, so I allowed the installer to wipe sda completely. No luck here, either - it looks like I got the same exact error. At least, it's the same no such device along with an error prompt.

I'm at a grub rescue prompt. Hopefully, I can work from here to edit the grub configuration, and get into the operating system.

Thoughts?

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