[Bug 745960] Re: Cannot boot grub after installing to LVM

[Chad A. Davis]

My original report was on a MacBookPro. I'm not sure if the RAID reports
are related. I also tested in a VM, without problems, whether the LVM
was encrypted or not. The problem occurred only on the Mac, both
encrypted and not encrypted, when using LVM. I used the default: entire-
disk. I did not opt to encrypt the home directory. The symtoms are the
same on Oneirc as they were on Natty.

I'm attaching the files you requested. This install is from the daily
ISO ubuntu-oneiric-alternate-amd64+mac.iso from 2011-09-20 .

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

Title:
  Cannot boot grub after installing to LVM

Status in Release Notes for Ubuntu:
  New
Status in “grub2” package in Ubuntu:
  Incomplete
Status in “grub2” source package in Natty:
  Incomplete
Status in “grub2” source package in Oneiric:
  Incomplete

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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