Apple ][

In this section Apple ][ means the whole line of Apple II computers, including: Apple II, Apple ][+, Apple IIe, Apple IIc, Apple IIGS, Apple IIc Plus and some information about Apple-1.

My posts about Apple II

Floppy disk links

The disk formatting code of Apple DOS 3.1 / 3.2 does something fairly odd: It writes only the sector headers, with no sector bodies. Any particular sector’s body is created the first time that particular sector has data written to it. This means that on such disks it is normal for unused sectors to be “bodyless”

Reference: https://forum.kryoflux.com/viewtopic.php?f=4&t=279