[Bug 1090829] Re: grub-efi cannot install on locked ESP (Input/output error)

[YannUbuntu]

@Phillip: fscking the ESP (and all other partitions) returns no warning
nor error:

# fsck -fyM /dev/sda2
fsck from util-linux 2.20.1
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


and the Input/Output error remains after the fsck.
(Full log: http://paste.ubuntu.com/1469303/ )

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https://bugs.launchpad.net/bugs/1090829

Title:
  grub-efi cannot install on locked ESP (Input/output error)

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  HP G6 laptop with Windows 8 installed, and looking to have a dual-boot
  with Ubuntu 12.10

  With SecureBoot enabled: http://paste.ubuntu.com/1421098
  And with SecureBoot disabled: http://paste.ubuntu.com/1421155

  grub-efi fails writing on the original ESP:

  # grub-install --efi-directory=/boot/efi --target=x86_64-efi
  mkdir: cannot create directory `/boot/efi/EFI/ubuntu': Input/output error

  Remark: this is similar but not duplicate of Bug #1091477

  **************** WORKAROUND:
  1) via Gparted create another EFI partition (FAT32, 200MB, located in the first 100GB of the disk), move the 'boot' flag on it
  2) make Ubuntu use this new ESP (eg via Boot-Repair).

  Example: http://paste.ubuntu.com/1442264

  *************** Computers that come with a locked ESP:
  - HP G6 laptop: see original bug description
  - Samsung Series 9 NP900X4C-A07US: http://paste.ubuntu.com/1442902

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