Change Windows drive letters (Via Lifehacker.) Sometimes when users plug a USB drive into a Windows machine, the drive does not appear with a letter on My Computer. This is usually because a backup drive or network drive (even a disconnected one) occupies the letter that the USB drive is used to occupying… such as say, the E: drive. As we’re now giving AB 75 administrators USB drives, this problem has come up a few times and I’ve had to struggle to remember how to change drive letters (I don’t spend that much hands on time with Windows anymore.) Thankfully I’ve always remembered so far, but now I can just look up this post next time I need to. Perhaps it will be useful for some of you as well.