Ubuntu - Ubiquity Error "The username you entered is invalid"
When Installing Ubuntu from a Live CD via the graphical installer ubiquity you may receive the following error :
The username you entered is invalid. Note that usernames
must start with a lower-case letter, which can be followed
by any combination of numbers and more lower-case letters.
This error can occur due to the migration assist attempting to migrate documents and settings from other installed operating systems. To prevent this feature use the --no-migration-assistant option.
root@root:~# ubiquity --no-migration-assistant