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

[TimMadden]

Hi, I seem to have this one. I am willing to try to what you ask in
comment #8, but I want to be sure that I have the procedure down. When I
tried to install Ubuntu, it took a couple tries and I did not record
notes about what happened when. I do recall that I may have seen an I/O
error at one point. Also, after it would not boot I did try to reset the
machine back to factory default from the windows recovery partition.

Anyway, from what I understand you want me to run fsck on the ESP to fix the file system. Then run boot-repair again to see if it can install EFI properly??
Thanks,

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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:
  Incomplete

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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