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

[Felix Offor]

*** This bug is a duplicate of bug 1090829 ***
    https://bugs.launchpad.net/bugs/1090829

I solved this by disabling secure boot. I have an HP Spectre 360. You
have to disable secure boot and clear all secure boot keys in the BIOS
SETUP UTILITY.

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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:
  Confirmed

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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