In 1984 the company pivoted to developing home computer peripherals, such as the HyperDrive hard drive for the Macintosh 128K, and printers.

The HyperDrive was considered an elite upgrade at the time, though it was hobbled by Apple's Macintosh File System, which had been designed to manage 400K floppy disks; as with other early Macintosh hard disks, the user had to segment the drive such that it appeared to be two or more partitions, called Drawers.

The second issue of MacTech magazine, in January 1985, included a letter that summed up the excitement: The BIG news is from a company called General Computer.

They announced a Mac mod called HyperDrive, which is a RAM expansion to 512K, and the installation of a 10 meg hard disk with the controller INSIDE THE MACINTOSH.

This allows direct booting from the hard disk, free modem port, no serial I/O to slow things down, and no external box to carry around.