So I use a flash drive in my vehicle for music, I normally load a 4Gb and have at it. I haven't done anything different than I normally do, other than unplugging it and plugging it into my iMac. So I try to load some music on it this morning and I get a popup telling me it's write protected and I can't do anything with it? I opened up the disc utility, but I can't repair, format, verify or anything else because it's write protected. Normally with Windows I was able to right click and hit properties and remove this, I tried on my gaming PC and no joy there either. anyone know of any tricks to this?