External hard disk problem

control panel, computer management, storage section, disk management. you may have to download the administrative tools for windows xp/2000/vista to find this. if you have multiple memory card readers, the drive letter assignments to these drives are conflicting with the drive letter that is being assigned to your external hard drive. assign the partition of your hard drive a letter not used down in the alphabet (such as x:) for e*X*ternal.