M.2.2 Logical Format

The Logical Format for the 130 mm 4.1GB disk shall be the PC File System (see Annex A).

The boot sector defined in Annex A shall have the following values.

Table M.2-1. Boot Parameter Values for 130mm 4.1GB Magneto-Optical Disk

Byte(s)

Value

Description

11 - 12

0200H

512 bytes/sector

13

40H or 80H

Sectors / cluster, either 64 or 128. See Note.

21

F8H

Flag for disk type F8H = Hard Disk.

24 - 25

003EH (Nominal)

Nominally 62 sectors/track, but may vary, and any value should not affect interoperability.

26 - 27

0001H (Nominal)

Nominally 1 head, but may vary, and any value should not affect interoperability.


Note

Lower values would not utilize all the disk sectors on a side.