[Bug 1692876] Re: ubuntu-server ARM64 ISOs lack partition table with EFI System Partition

[dann frazier]

@directhex: would you mind verifying that this resolves the issue for you as well? You can try either any (or all!) of:
 A recent daily build:
  http://cdimage.ubuntu.com/ubuntu-server/xenial/daily/current/
  http://cdimage.ubuntu.com/ubuntu-server/daily/current/

 My test build of the d-i installer:
  http://ppa.launchpad.net/dannf/test/ubuntu/dists/xenial/main/installer-arm64/current/images/hwe-netboot/mini.iso

I don't know if any of these Ubuntu releases support your platform, but
they should at least boot into GRUB.

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https://bugs.launchpad.net/bugs/1692876

Title:
  ubuntu-server ARM64 ISOs lack partition table with EFI System
  Partition

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

Bug description:
  [Impact]
  On some arm64/efi platforms, the firmware will not be able to boot from an ISO dd'd to a USB stick.

  [Test Case]
  My test is to attach the ISO as an "HD/USB Image" to a Cavium CRB1S w/ AMI UEFI firmware using the BMC's Virtual Media. Note that the BMC requires that the file be renamed with a ".img" suffix.

  [Regression Risk]
  For d-i, this is aligning the xorriso boot options with the same ones now used to build the server ISO. Regression risk has been mitigated by testing on real hardware connected as both CD and disk images.

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