[Bug 745960] Re: Cannot boot GRUB on Intel Mac after installing to LVM

[Chad A. Davis]

My original report was on a Mac. I was able to reproduce the issue
consistently at that time. I was never able to reproduce the issue on a
x86 VM. I don't believe a test on an x86 VM answers the question here. I
would leave this incomplete until someone has time to test this on real
hardware, preferably some type of hardware that previously had the
problem, or at least something that uses GPT.

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https://bugs.launchpad.net/bugs/745960

Title:
  Cannot boot GRUB on Intel Mac after installing to LVM

Status in Release Notes for Ubuntu:
  Invalid
Status in Release Notes for Ubuntu oneiric series:
  New
Status in Release Notes for Ubuntu precise series:
  Invalid
Status in “grub2” package in Ubuntu:
  Fix Released
Status in “grub2” source package in Natty:
  Incomplete
Status in “grub2” source package in Oneiric:
  Incomplete
Status in “grub2” source package in Precise:
  Fix Released

Bug description:
  Binary package hint: debian-installer

  TEST CASE:
  http://testcases.qa.ubuntu.com/Install/AlternateEncryptedLvm

  I'm using kubuntu-alternate-amd64+mac.iso from 2011-03-29.1 on a
  MacBookPro6.2

  The installation runs as expected. No errors are reported. After
  rebooting, grub does not load. It's not that grub does not load linux,
  but rather that the hardware never passes control to the grub menu. It
  stays at the grey mac boot screen, as if there were no operating
  systems. Holding 'Alt' during boot, which is the standard way to boot
  when only Linux is installed on the Mac, offers no partition to boot.

  Installing the same system in the same manner without an encrypted LVM
  works fine. I did not test installing an unencrypted LVM.

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