[Bug 882252] Re: 11.10 installer doesn't carry-over bootloader old options

[Phil V]

Thanks for your bug report. Bug 878314 was the previous master report
for this problem (ubiquity/update-manager overwriting the MBR without
user consent), but I'm going to make this the master as it describes the
problem in more detail. As this concerns an upgrade installation, I
believe the package to report it against is update-manager, but it may
affect ubiquity as well since you performed the upgrade from a live CD
environment.

** Package changed: ubuntu => update-manager (Ubuntu)

** Changed in: update-manager (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/882252

Title:
  11.10 installer doesn't carry-over bootloader old options

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  For background, my system was originally setup as Gentoo. When
  subsequently I installed Ubuntu 11.04, I installed the GRUB2
  bootloader into a partion sda# rather than simply to sda, and I put a
  chainloader option into my original Gentoo-based GRUB1 bootloader to
  allow booting to Ubuntu (this to avoid mess of having grub2 make my
  other distros unbootable with its esoteric script-based mechanism - I
  frequently install other distros to test).

  During 11.10 installation (from amd64 CD), which recognized both
  Gentoo and Ubuntu 11.04, I selected the option to totally replace
  11.04 and leave everything else alone.

  I expected, on reboot, to get my original Gentoo GRUB1 bootloader,
  select the chainload option, and see my shiny new 11.10 Grub2
  bootloader, to then select my kernel, etc.

  Instead, I went straight to the GRUB2 loader, meaning that my MBR was
  overwritten, and 11.10 installer didn't check my original bootloader
  settings I chose when I installed the previous version.

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