[Bug 1095142] Re: GRUB2 installation with GPT partition table unclear

Wed Jul 23 17:39:09 UTC 2014

In other words, it's for the most part a usability bug and in that
dimension grub has been sucking golf-balls through a hose for years.
There you got your bug.

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https://bugs.launchpad.net/bugs/1095142

Title:
  GRUB2 installation with GPT partition table unclear

Status in “grub2” package in Ubuntu:
  Confirmed

Bug description:
  GRUB2.00 recognizes ext4 as ext2. Extract of the log on
  http://ubuntuforums.org/showpost.php?p=12431947&postcount=17 :

  #grub-install -v
  grub-install (GRUB) 2.00-7ubuntu11

  #grub-install --force /dev/sda4
  /usr/sbin/grub-bios-setup: warning: File system `ext2' doesn't support embedding.
  /usr/sbin/grub-bios-setup: warning: Embedding is not possible.  GRUB can only be installed in this setup by using blocklists.  However, blocklists are UNRELIABLE and their use is discouraged..
  Installation finished. No error reported.

  #parted -l
  Model: ATA Hitachi HTS54502 (scsi)
  Disk /dev/sda: 250GB
  Sector size (logical/physical): 512B/512B
  Partition Table: gpt

  Number  Start   End    Size    File system     Name                  Flags
  1      20.5kB  210MB  210MB   fat32           EFI System Partition  boot
  2      210MB   193GB  192GB   hfs+            Customer
  3      193GB   193GB  650MB   hfs+            Recovery HD
  4      193GB   203GB  9998MB  ext4            LINUX
  5      203GB   204GB  1073MB  linux-swap(v1)  UBUNTU 2
  6      204GB   250GB  45.7GB  ntfs            BOOTCAMP

  Warning: Unable to open /dev/sr0 read-write (Read-only file system).  /dev/sr0
  has been opened read-only.

  Error: /dev/sr0: unrecognised disk label

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