[Bug 1090829] Re: grub-efi fails to install with Input/output error

[Fred Palmer]

Edit - found reference to the bit that is set, but need to find how to reset it. It is intended for other efi type partitions like a vendor recovery so users would not damage a vendor recovery. If HP is setting it on the efi partition it is wrong. Bug is not really related to current issue.
https://bugs.launchpad.net/ubuntu/+s...fi/+bug/811485
Quote from UEFI spec:
Partition creators may prevent UEFI firmware from examining and using a specific partition by setting bit 1 of the Partition Attributes (see 5.3.3) which will exclude the partition as a potential ESP.

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

Title:
  grub-efi fails to install with Input/output error

Status in “dosfstools” package in Ubuntu:
  Confirmed
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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