Installing a 2nd external hard drive. 1st one was absolutely no problem, this one will not show up. If I click safely remove hardware, it shows up as a usb mass storage device, but no drive letter. How can I get my computer to assign it a drive letter so I can format it and move my shit over. Any help is appreciated. I'm running XP, it's a 500 gig drive in a SATA to usb 2.0 enclosure. If you need any more info, let me know. I'll be searching the sites for answers, but no luck as of yet.