Answer 4

The 8" floppy disk has room for 77 tracks of 26 sectors, with each sector holding 128 bytes of data.

This creates a raw capacity of 256,256 bytes. The first two tracks (6656 bytes) are reserved for the elements of the operating system itself (BIOS, BDOS and CCP). The rest of the disk is divided into "allocation units" of 8 sectors, or 1024 bytes, each. The first two allocation units hold the directory, leaving 241 to hold the actual file data, for a usable capacity of 241 KB per disk.

Contributor: Dave Tweed

Published: August-2002