Describes the cause and action for error messages.
failed to boot after upgrade
 Fix Windows 10 won't Boot/Start after Update - EaseUS
Unable to update Windows 10 to v1809. Freezing at boot after ...
How Do I Fix Windows 10 Not Booting after Update with 8 Solutions
[SOLVED] fails to progress on the boot after upgrade - Ubuntu Forums
Ubuntu 14.04 failed to boot after a failed upgrade to 16.04 - Ask ...
Boot loop before gui after upgrade to Ubuntu 18.04
virtualbox - Ubuntu freezes during boot after ...
system installation - Ubuntu 18.04 fails to boot ...