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Re: Fixing a Grub Foul-up

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On Tue, 17 Nov 2020 at 05:58, Martin McCormick <martin.m@suddenlink.net> wrote:

>         If I look at grub.cfg and /etc/default/grub, everything
> looks as if it should work but it doesn't.

>       Is there a safe way to mount this drive, possibly using
> chroot, re-run grub-config and get the drive bootable again?

Yes, recovering grub is a routine operation, but you have to
get all the details correct.

> I've got backups but that's beside the point.

If you can easily access your backup of grub.cfg, try restoring
it to the problem drive and see if it works.

If that doesn't work, I suggest to post the grub.cfg that used to work here,
together with the output of 'lsblk -f' when all the drives that you need
to create a restoration setup are active.

That will help us guide you with much less guesswork.

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Thread

Fixing a Grub Foul-up "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-16 20:00 +0100
  Re: Fixing a Grub Foul-up Dan Ritter <dsr@randomstring.org> - 2020-11-16 20:40 +0100
    Re: Fixing a Grub Foul-up "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-17 04:00 +0100
    Re: Fixing a Grub Foul-up "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-30 05:00 +0100
      Re: Fixing a Grub Foul-up David <bouncingcats@gmail.com> - 2020-12-01 15:40 +0100
        Re: Fixing a Grub Foul-up Solved! "Martin McCormick" <martin.m@suddenlink.net> - 2020-12-01 21:10 +0100
  Re: Fixing a Grub Foul-up John Boxall <jboxall47@gmail.com> - 2020-11-16 20:40 +0100
    Re: Fixing a Grub Foul-up Kenneth Parker <sea7kenp@gmail.com> - 2020-11-17 03:00 +0100
  Re: Fixing a Grub Foul-up David <bouncingcats@gmail.com> - 2020-11-17 00:00 +0100
    Fixing a Grub Foul-up, Not There Yet. "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-21 20:00 +0100
      Re: Fixing a Grub Foul-up, Not There Yet. Felix Miata <mrmazda@earthlink.net> - 2020-11-21 20:40 +0100
        Re: Fixing a Grub Foul-up, Not There Yet. "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-22 00:10 +0100
          Re: Fixing a Grub Foul-up, Not There Yet. Felix Miata <mrmazda@earthlink.net> - 2020-11-22 01:20 +0100
          Re: Fixing a Grub Foul-up, Not There Yet. Kushal Kumaran <kushal@locationd.net> - 2020-11-22 02:10 +0100
      Re: Fixing a Grub Foul-up, Not There Yet. Dan Ritter <dsr@randomstring.org> - 2020-11-22 01:10 +0100
        Re: Fixing a Grub Foul-up, Not There Yet. "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-22 04:50 +0100
      Re: Fixing a Grub Foul-up, Not There Yet. "Martin McCormick" <martin.m@suddenlink.net> - 2020-11-30 18:00 +0100

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