Before the handy hard disks came, bulky, metal boxed like devices used to be the hard disks. In the 1950’s, hard disks were as big as cabinet files and were very complex to operate. IBM came with a new one and it was much smaller than the 1950’s hard disk however, it still could not fit a personal computer. It was attached separately to the “mammoth” computer. The hard disks that were sold by other companies (IBM’s rivals) during those times were also huge and contained large magnetic disk packs. These magnetic disk packs rotate continuously, reading files and pieces of information stored in it.
