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

[Phillip Susi]

This is a Windows option, not a bios one, and that does sound like a
plausible explanation.

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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


  **************** WORKAROUND1 (works):
  1) Via Gparted create another EFI partition (FAT32, 200MB, located in the first 100GB of the disk), move the 'boot' flag on it
  2) Install grub-efi in this new ESP (eg https://help.ubuntu.com/community/UEFI#Converting_Ubuntu_into_EFI_mode ).

  **************** WORKAROUND2 (to be tested):
  1) Backup the files in the ESP
  2) Format the ESP
  3) Recreate the ESP (FAT32, same size) via Gparted, place the 'boot' flag on it
  4) Restore the backups into this new ESP
  5) Install grub-efi in this new ESP.

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