Back during the days when Windows 3.11 ruled the desktop operating system market, many users considered a hard drive capable of storing a few hundred megabytes huge. These days, however, even drives with several hundred gigabytes of storage space may not suffice for the voluminous data users create and download in the form of music, photo and video files. Even the largest multi-terabyte drives fill up quickly with HD-format videos. Consequently, you might need to add a second hard drive to your computer to keep from using all the space on your primary system drive. In addition to giving you extra storage space, adding a second internal or external hard
