Sorry, you have lost me

My Knowledge of pc is not so great and I'm Italian so the more specific your terms gets the less I understand

Be patient please
@
BetterRed The description of the HD in bios is only SATA 2
I will try to move my library in the external drive asap and hope for the best.
Just in case... How do i set the CALIBRE_OVERRIDE_DATABASE_PATH?
@
Katsunami When I noticed the problem with the old library I've created a new one from scratch.