The document summarizes the development of HP's Kittyhawk, a 1.3 inch hard disk drive introduced in the 1990s. Key details include: 1) The Kittyhawk project was launched in 1991 to introduce a new smaller form factor disk drive within 12 months. 2) The target markets initially considered included personal digital assistants (PDAs) and sub-notebook computers. 3) The first Kittyhawk drives shipped in June 1993, meeting the aggressive timeline but ultimately finding less success than anticipated in the PDA and sub-notebook markets.