Slow start up on SDD after clean install

[stevef]

Suggestions? Comments?

Having the boot messages display rather than the blank screen with the timer icon should give some idea of what is happening during the boot period. I don't think this is covered in the links Jerry provided.
This can be done by making changes to the boot loader (GRUB) set up. It is also possible to have the GRUB menu display every boot (without needing to press a key) if that is required.
Editing the GRUB set up should be done with due care. Let us know if you want help.