[Bug 1056101] Re: grub-efi overwrites an existing grub*.efi file

[Phillip Susi]

Note that if the primary config file is missing or corrupt, the grub
rescue shell provides enough functionality to direct it to the config
file of the other install, allowing recovery from such a scenario.


** Changed in: grub2 (Ubuntu)
   Importance: Undecided => Wishlist

** Changed in: grub2 (Ubuntu)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/1056101

Title:
  grub-efi overwrites an existing grub*.efi file

Status in “grub2” package in Ubuntu:
  Triaged

Bug description:
  On Ubuntu 12.04 (grub 1.99), grub-efi creates a
  /efi/ubuntu/grubx64.efi file, which is recognized as an entry in the
  UEFI firmware.

  When you install two Ubuntu (let's say UbuntuA, then UbuntuB) in
  dualboot, UbuntuB will overwrite the /efi/ubuntu/grubx64.efi file
  (linked to UbuntuA) by a new /efi/ubuntu/grubx64.efi file (linked to
  UbuntuB).

  THE PROBLEM IS:
  if UbuntuB's /boot/grub/grub.cfg is damaged or erased, the user can't access neither UbuntuA nor UbuntuB.

  EXPECTED BEHAVIOR:
  UbuntuA creates its own entry (eg /efi/ubuntu/grubx64_uuidA.efi ), and UbuntuB creates another entry (eg /efi/ubuntu/grubx64_uuidB.efi ), so that if UbuntuB's /boot/grub/grub.cfg is damaged, the user can still access UbuntuA via the UEFI firmware.

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