[Bug 883017] Re: memtest86+ fails on efi systems

[Fantu]

5.31b+dfsg-4 now in Jammy include latest upstream version and other patches that solves all freeze/crashes I saw (except the multiboot one) and memtest86+ is now returned to work well.
Uefi support is still missed but upstream developer replied me that will do upstream git and is contacting developers of various fork to merge them upstream and one have initial a good part of the uefi support made, so probably memtest86+ 6.00 will have it.

For 5.31b+dfsg-4 (in Jammy) include also:
  * Merge from ubuntu:
    ...
    - Don't present in GRUB menu on EFI systems, since it won't work.
      (Closes: #695246)
  * Warn that don't support EFI instead of exit silently (LP: 1863940)

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https://bugs.launchpad.net/bugs/883017

Title:
  memtest86+ fails on efi systems

Status in memtest86+ package in Ubuntu:
  Triaged

Bug description:
  memtest86+ fails to load on an amd64 in EFI-mode system using grub-
  efi, I do not know if the error also occurs when using grub-pc on
  amd64.

  Memtest86+ entries are included in the GRUB boot menu. Booting these options results in an error however:
  'error: unknown command 'linux16'.'

  Changing linux16 to linux results in another error:
  'error: zImage doesn't support 32-bit boot.'
  (bug #424506)

  It seems grub-efi (or maybe actually grub on
  amd64(http://www.gnu.org/software/grub/manual/grub.html#linux16) does
  not support linux16.

  I have not found a solution. If there is no solution yet, I would
  suggest not adding the Memtest86+ boot options on amd64 systems (I
  believe efi&64 bit support is planned for memtest86+ version 5)

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