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3.2.1 Volume Descriptor Set

Volume descriptor set is a set of volume descriptors recorded in consecutive sectors from logical sector number 16 (FAD = 166).
There are five types of volume descriptors as follows. Of these, the volume partition descriptor is not used.


Figure 3.3 Volume descriptor

(1) Boot record

Table 3.2 Boot record structure 
 byte position 
 type 
 Field name 
 Description 
 1 
 2-6 
 7 
 8-39 
 40-71 
 71-2048 
N
 
N
A
A
 
Volume Descriptor Type
Standard Identifier
Volume Descriptor Version
Boot System Identifier
Boot Identifier
Boot System Use
 
 Volume descriptor type 
 Standard identifier 'CD001' 
 Volume descriptor version 
 Boot system identifier 
 Boot identifier 
 Not specified

In normal GAME-CD, the basic volume descriptor and volume descriptor set terminal are 1 sector each. It is recorded one by one.
These two sectors must be recorded.

Please use the secondary volume descriptor and boot record after understanding the usage.

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