[Bug 1575305] Re: Ubuntu system broken after upgrade from 15.10 to 16.04

[Baruch]

Symptoms:

#grub-install 
Installing for x86_64-efi platform.
grub-install: error: cannot find EFI directory.


#apt-get upgrade
... lots of stuff then ...
Errors were encountered while processing:
 shim-signed
E: Sub-process /usr/bin/dpkg returned an error code (1)

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https://bugs.launchpad.net/bugs/1575305

Title:
  Ubuntu system broken after upgrade from 15.10 to 16.04

Status in shim-signed package in Ubuntu:
  New

Bug description:
  After unfortunate click on upgrade to 16.04 my system is now almost
  useless (fortunately enough I can still work with a windows 10 VM.. )

  Seems like grub is failing to find efi folder so there is an avalanche
  of broken things - from shim to unity.

  I'll try to open from the broken system and add some more information.

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