How can I see the system standing throughout boot?
You need to push cmd+v upon start-up to see the boot result. Press this right after the chime .
If you intend to make that irreversible, you need to possibly do something along the lines of:
sudo nvram boot-args="-v"
To undo the above:
sudo nvram boot-args=
in the Terminal. (/ Applications/Utilities/Terminal. application)
note : I have not examined the above commands, yet I'm certain a google question will certainly aid you there if you intend to make it irreversible.