You can get almost any size in gigabytes you want in a hard drive. 50, 100, 500, whatever you feel they make it. In fact there are now hard drives that are larger than gigabytes, they are called TeraByes.
Hard drive space is measured in bytes. Other units are simply built on the term byte, such as kilobyte (1000 bytes), megabyte (1000 kilobytes or 1 million bytes), gigabyte (1000 megabytes or 1...