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

[Mina]

** Description changed:

  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
+ 
+ Update: Command used to get ubuntu studio applications:
+ sudo apt-get install ubuntustudio-desktop
+ 
+ Now the backup-ubuntu boots fine. I think I was booting grub in legacy
+ mode the whole time & when I tried uefi mode it worked. But still the
+ half-upgraded ubuntu is not booting. Same symptoms.

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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

  Update: Command used to get ubuntu studio applications:
  sudo apt-get install ubuntustudio-desktop

  Now the backup-ubuntu boots fine. I think I was booting grub in legacy
  mode the whole time & when I tried uefi mode it worked. But still the
  half-upgraded ubuntu is not booting. Same symptoms.

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