[Bug 1632473] Re: arm64 grub needs to load gzio

[Launchpad Bug Tracker]

This bug was fixed in the package debian-installer - 20101020ubuntu483

---------------
debian-installer (20101020ubuntu483) yakkety; urgency=medium

  * Tell GRUB to load the gzio module on arm64 now that we're booting
    a compressed kernel (LP: #1632473).

 -- dann frazier <dannf at ubuntu.com>  Tue, 11 Oct 2016 16:22:23 -0600

** Changed in: debian-installer (Ubuntu)
       Status: In Progress => Fix Released

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Title:
  arm64 grub needs to load gzio

Status in Ubuntu CD Images:
  New
Status in debian-installer package in Ubuntu:
  Fix Released
Status in debian-installer source package in Xenial:
  New

Bug description:
  The yakkety/arm64 Ubuntu Server ISO 20161008 daily build fails to
  boot. After selecting "Install Ubuntu Server" from the GRUB menu, the
  following message appears:

  error: invalid magic number.
  unaligned pointer 0xb84630e8
  Aborted. Press any key to exit.

  
  This is due to the arm64 kernel now being gzip'd (See LP: #1384955), and GRUB not having loaded the gzio module. Whatever generates the grub.cfg for the cdimages likely needs to be updated to load this module in advance of loading the kernel.

  Workaround:
   - At the GRUB menu, press "c" to enter the GRUB shell
   - At the shell, run 'insmod gzio'
   - Press escape to return to the GRUB menu
   - Make your boot selection as per normal.

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