[Bug 1769433] Re: do-release-upgrade from 32-bit 16.04 to 18.04 goes ahead, doesn't work and messes everything up

[Alvaro Carballo Garcia]

** Description changed:

  I decided to test Ubuntu 18.04 on an old computer with 16.04 32-bit
  without knowing that only 64-bit was supported. do-release-upgrade
  seemed to perform all the actions without any problem. But, logically,
  the newly installed OS didn’t work.
  
  After a quick research, I realised that the problem was the 32-/64-bit
  part and reinstalled the 16.04 32-bit version. I was forced to format
  the main partition as far as the 32-bit installer didn't recognise the
  64-bit installation as a valid OS.
  
  After finishing the 16.04 32-bit installation, performing the
  recommended updates and installing just a few programs (very stable and
  which I have always used on that computer), the OS started behaving
  weirdly. At first sight, it was working fine, but kept getting regularly
- frozen and not starting properly. Finally, I seemed to have fixed all
- the problems by forcing (because it wasn't immediately available either)
- dist-upgrade.
+ frozen and not starting properly. Finally, I have been able to fix all
+ the problems by deleting the old partitions, creating them again and
+ reinstalling Ubuntu 16.04 32-bit.
  
  Long story short: my computer has been behaving erratically for 2 days
  without never getting a clear indication about what might be wrong. Even
  worse, all this has been provoked because the OS  allowed me to perform
  an impossible action. The fix seems also quite straightforward: avoid
  any 32-bit version to be upgraded unless that format is available.

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https://bugs.launchpad.net/bugs/1769433

Title:
  do-release-upgrade from 32-bit 16.04 to 18.04 goes ahead, doesn't work
  and messes everything up

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

Bug description:
  I decided to test Ubuntu 18.04 on an old computer with 16.04 32-bit
  without knowing that only 64-bit was supported. do-release-upgrade
  seemed to perform all the actions without any problem. But, logically,
  the newly installed OS didn’t work.

  After a quick research, I realised that the problem was the 32-/64-bit
  part and reinstalled the 16.04 32-bit version. I was forced to format
  the main partition as far as the 32-bit installer didn't recognise the
  64-bit installation as a valid OS.

  After finishing the 16.04 32-bit installation, performing the
  recommended updates and installing just a few programs (very stable
  and which I have always used on that computer), the OS started
  behaving weirdly. At first sight, it was working fine, but kept
  getting regularly frozen and not starting properly. Finally, I have
  been able to fix all the problems by deleting the old partitions,
  creating them again and reinstalling Ubuntu 16.04 32-bit.

  Long story short: my computer has been behaving erratically for 2 days
  without never getting a clear indication about what might be wrong.
  Even worse, all this has been provoked because the OS  allowed me to
  perform an impossible action. The fix seems also quite
  straightforward: avoid any 32-bit version to be upgraded unless that
  format is available.

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