[Bug 1046572] Re: grub-efi fails (cannot create directory `/boot/efi/EFI/ubuntu')

[YannUbuntu]

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

I found several similar cases: Bug #1090829
I strongly suspect Microsoft / the PC maker to lock writing on the ESP. Creating another EFI partition allows to workaround the issue.

** This bug has been marked a duplicate of bug 1090829
   grub-efi cannot install on locked ESP (Input/output error)

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https://bugs.launchpad.net/bugs/1046572

Title:
  grub-efi fails (cannot create directory `/boot/efi/EFI/ubuntu')

Status in “grub2” package in Ubuntu:
  Expired

Bug description:
  GRUB version 1.99-21ubuntu3.1

  On a EFI system, with /boot/efi correctly mounted, grub-install fails and return the following error:
  mkdir: cannot create directory `/boot/efi/EFI/ubuntu': Input/output error

  Exit code: 1

  
  Boot-Repair log: http://paste.ubuntu.com/1181544

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