[Bug 1701307] Re: no "GRUB_DISABLE_OS_PROBER" equivalent for 30_uefi-firmware

[Phillip Susi]

chmod a-x /etc/grub.d/30_uefi-firmware.  rm also works but changing the
permissions is easier to reverse.

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Title:
  no "GRUB_DISABLE_OS_PROBER" equivalent for 30_uefi-firmware

Status in grub2 package in Ubuntu:
  New

Bug description:
  Version: 2.02~beta2-36ubuntu3

  On UEFI systems, 30_uefi-firmware is a good escape hatch as some do
  not provide easy or functional access to the "BIOS screen." However,
  on systems that do not require this (the issue is increasingly
  uncommon) this is unnecessary clutter.

  While /etc/default/grub provides a way to stop grub from filling up
  the boot menu with other-OS junk (the "GRUB_DISABLE_OS_PROBER"
  variable) there appears to be no way to stop /etc/grub.d/30_uefi-
  firmware from processing and adding this entry.

  I'd like to request an equivalent variable be added to allow an
  administrator to disable this, without having to alter this .deb-
  managed file.

  On the subject, a similar flag for 20_memtest86+ would be welcome if
  not present (I have not looked to see if there is)

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