 It could format hard drives in HFS, HFS Plus file systems, and supported formatting drives for use with Linux and A/UX.In the mid 1990s, when Apple began shipping computers using ATA hard drives, the SCSI drive formatting utility, Apple HD SC Setup was joined by Internal HD Format which could not format SCSI drives.It was first introduced with the PowerBook 150 and Quadra 630 in July 1994.