I have yet to read the udev manual about that, but if I have to assign a name
to each new device I plug in, that's not manageable.
However, if it's an automatic process, it's udev all the way :D !
I just quickly checked hdparm, but it seems way too technical for me :(
The thing is, I have a rough script that works.
Then, provided udev does what I imagine, I can refine it (less lines in the
script), and hopefully operate it fully without sudo.
But first of all, I must make the Thunar personalized command work.