[Bug 1662861] [NEW] Upgrade from 14.04.5 to 16.04.1 failed

[Mina]

Public bug reported:

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?

** Affects: dbus (Ubuntu)
     Importance: Undecided
         Status: New

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

Title:
  Upgrade from 14.04.5 to 16.04.1 failed

Status in dbus 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?

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