OK,
So on a closer look it appears that I cannot rename any of my drives (including my PCs own drives) without asking for permission first. So I assume it's a setting of my Windows like User Account Control where it asks you about changes that can affect your computer. I checked the list of users on the old drives I hooked up to my PC and they don't hold any other users then the usual (Authenticated Users, SYSTEM, Administrators, Users). So all fixed drives will ask for that permission first. The only one that doesn't and the one I foolishly compared them to is a portable HDD connected via USB. This one, by virtue of being portable I assume, does not have a security tab and I assume Windows treats it as a USB stick.
So problem solved! It were my UAC settings
Thanks!