[Bug 1807537] Re: failure in fsck option of advanced boot

[Tim Passingham]

I had exactly the same problem. I'm running 18.10, grub2-common
2.02+dfsg1-5ubuntu8

If I go to root from the recovery menu, my root disk is already mounted,
and umount says it is busy, so I can't fsck from there either.

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Title:
  failure in fsck option of advanced boot

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  I ran into this first on a 16.04.5 install I have.  I just retried it
  on a new laptop with 18.04.1 with the same result.

  When booting, I chose the advanced form, the rescue variant, and tried
  to use its fsck option.  This failed almost immediately.  I'm
  attaching a photo of the screen showing the error, but the text is

  /lib/recovery-mode/recovery-menu: line 80: /etc/default/rcS: No such
  file or directory

  /dev/nvme0n1p5 is mounted.

  e2fsck: Cannot continue, aborting.

  --------------------------------------------------------
  Thus there seems to be no point in having this fsck option because it is doomed to fail.  Well, at least in the absence of further guidance about how to use this.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: grub-common 2.02-2ubuntu8.9
  ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
  Uname: Linux 4.15.0-42-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  Date: Sat Dec  8 13:52:47 2018
  InstallationDate: Installed on 2018-10-18 (51 days ago)
  InstallationMedia: Xubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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