[Bug 1662861] Re: Upgrade from 14.04.5 to 16.04.1 failed

[Seth Arnold]

** Package changed: dbus (Ubuntu) => ubuntu-release-upgrader (Ubuntu)

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https://bugs.launchpad.net/bugs/1662861

Title:
  Upgrade from 14.04.5 to 16.04.1 failed

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  Through the installation it notified me that the upgrade failed due to
  too many errors and it aborted. I powered off the machine and now I
  can't boot into my system.

  When I try to boot I see a black grub screen. Then Plymouth shows the
  ubuntu studio boot screen. Then that Nvidia logo flickers a bit, then
  a black screen and nothing happens.

  Long ago I've followed some guide to get the ubuntu studio
  applications into my normal ubuntu.

  Luckily I've made a clone of 14.04 but for some reason I can't boot
  into it either. This makes me assume that my main problem is related
  to grub hopefully.

  I don't know what kind of information do I need to provide. I have a
  16.04 live usb ready. What files do I need to provide?

  Edit: here's the paste created by bootrepair
  http://paste2.org/h4ULxpeM

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