Alright, I'm at my wits end with this. There is absolutely no switch for write protection on my PNY 4gig flash drive, but there are certain files that are damaged, and I want to do a reformat. Can't do this because it says the disk is write protected. Tried the low level format and HP format programs suggested, but neither work. HP says the disk is formatted, and the other gets low level format errors and erases nothing. Also tried the registry edit solution, but could not find the Storage Device Policies string. Please help!