Author Topic: So you're grub is corrupted and you can't boot.  (Read 251 times)

Offline buster

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So you're grub is corrupted and you can't boot.
« on: December 20, 2017, 11:11:30 pm »
Got this from DistroWatch. Seems to be an easy way to at least get into the system:

Corrupted boot loader

One of my least favourite situations to try to recover from is rescuing a system where the boot loader is no longer working. Usually this can be fixed by booting a live disc, creating a chroot environment and re-installing the boot loader. However, there are several steps involved in this kind of rescue and sometimes our priority is to just get our main operating system back on-line quickly. For these situations there is Super Grub2 Disk. Super Grub2 Disk is a live CD which can be used to boot operating systems, even when the GRUB boot loader has been corrupted or overwritten. Super Grub2 Disk is not a full operating system, it just gives us the tools to boot our existing, on-disk operating system so we can start making repairs. This may be easier or faster than trying to repair the operating system from a separate, live disc environment.

Offline fox

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Re: So you're grub is corrupted and you can't boot.
« Reply #1 on: December 21, 2017, 07:02:05 am »
I wonder if there is an easy way to make a Super Grub2 disk on a usb stick? I was looking this up and it is unclear whether or not a program like unetbootin or etcher would work. Anyone tried this?
Ubuntu 18.04 and Pop!_OS on 2011 iMac
Linux Mint Cinnamon 19 on "late 2015" 5k iMac
Ubuntu 18.04 and Arch on Dell XPS 13

Offline ssfc72

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Re: So you're grub is corrupted and you can't boot.
« Reply #2 on: December 21, 2017, 07:34:39 am »
Yes, I believe I have it on a Yumi multiboot usb flash drive.  I also have another mbr repair program, on the same flash drive.
I have used them to recover from a non booting notebook.

Bill
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Offline Jason Wallwork

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Re: So you're grub is corrupted and you can't boot.
« Reply #3 on: December 21, 2017, 07:39:15 pm »
Thanks for sharing, Harry!
Primary: Desktop Tower with Kubuntu 18.04 on i5-3470 3.2 Ghz with 12 GB RAM, 64 GB SSD for OSes, 4 TB RAID-10 array for programs/data

Secondary/Test: Toshiba Satellite Ultrabook Z830-00K w/ Linux Du Jour, (i3-2367M 1.4 GHz, 4GB DDR3, 128GB SDD)