[Bug 975061] Re: grub doesn't find boot

[Peter Hawkins]

For me, my computer boots fine with no USB devices attached. If I plug
in my monitor's USB cable before boot (a Dell U2711, which contains an
integrated SD card reader), I receive the "illegal sector size" message.
The correct boot device is a SATA SSD disk; it certainly seems like
plugging in the SD card reader messes up the device numbering.

I'm using an ASUS P8Z68-V motherboard with a UEFI bios, running an up to
date version of Ubuntu Precise.

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https://bugs.launchpad.net/bugs/975061

Title:
  grub doesn't find boot

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  After a fresh installation of ubuntu (ubuntu-12.04-beta2-dvd-amd64) grub doesn't find the boot partition.
  grub runs rescue with error: invalid sector size 65535 (maybe grub tries to use a card-reader slot...)
  After
  sett prefix=(hd4,2)/ boot/grub
  set root=(hd4,2)
  insmod normal
  normal
  the system starts correct.
  See attached picture.

  Standard installation (on one hard disc) causes the same error.
  Installation using mbr causes the same error.
  Installation using gpt causes the same error.
  Disabling efi and using normal bios causes 12.04 to start in non-grafics mode.
  Best regards
  Mike

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: grub-efi-amd64 1.99-21ubuntu2
  ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
  Uname: Linux 3.2.0-22-generic x86_64
  ApportVersion: 2.0-0ubuntu4
  Architecture: amd64
  Date: Fri Apr  6 13:30:21 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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