[Bug 1091477] Re: grub-efi cannot install on locked ESP (read-only error)

[Eric]

Same bug here on Asus N550JV. Tried to use Boot-repair. Had the same
'Locked-ESP detected' message.

My post on Ubuntu forum: http://ubuntuforums.org/showthread.php?t=2184383
More info: http://paste.ubuntu.com/6332633/

Pressing ESC at start, I can see ubuntu (which was automatically added
to that menu with no intervention from me whatsoever). Trying to boot
it: black screen then it boots up W8.

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https://bugs.launchpad.net/bugs/1091477

Title:
  grub-efi cannot install on locked ESP (read-only error)

Status in “grub2” package in Ubuntu:
  Expired

Bug description:
  Some Windows8 computers come with a locked ESP that prevents writing
  outside the /EFI/Boot and /EFI/Microsoft folders, thus preventing the
  creation of a /EFI/ubuntu folder.

  This leads to a "Read-only" error when trying to install grub-efi.

  Example:
  http://ubuntuforums.org/showthread.php?p=12409846#post12409846

  Remark: this is similar but not duplicate of Bug #1090829

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

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