Phillip Corcoran said:
Probably an error in the registry, hence all pen drives you try are affected.
Go to the manual registry fix section here:http://www.makeuseof.com/tag/how-to-fix-write-protection-errors-on-a-usb-stick/
nope, actually ive created the writeprotect file in the registry myself earlier because my own " handle write protect" google research suggested it and it's still 0. I even checked if 1 would actually block any copy related action with the usb which was indeed the case...
i can install software on my usb stick, copy files to it and format it while HP USB Disk Storage Format Tool claims it was write-protected...
See for yourself:http://img32.imageshack.us/img32/3025/h9ni.png
btw, my usb stick is actually an mp3 player. Is that maybe the problem, even tho when I can format it and install software?