<< Volume Descriptor Type | Directory Record for Root Directory >>

Volume Sequence Number

19 -

8.4.6

Volume Identifier (BP 41 to 72)
This field shall specify an identification of the volume.

The characters in this field shall be d-characters.

8.4.7

Unused Field (BP 73 to 80)
All bytes of this field shall be set to (00).

8.4.8

Volume Space Size (BP 81 to 88)
This field shall specify as a 32-bit number the number of Logical Blocks in which the Volume Space of the
volume is recorded.

This field shall be recorded according to 7.3.3.

8.4.9

Unused Field (BP 89 to 120)
All bytes of this field shall be set to (00).

8.4.10

Volume Set Size (BP 121 to 124)
This field shall specify as a 16-bit number the assigned Volume Set size of the volume.

This field shall be recorded according to 7.2.3.

8.4.11

Volume Sequence Number (BP 125 to 128)
This field shall specify as a 16-bit number the ordinal number of the volume in the Volume Set of which the
volume is a member.

This field shall be recorded according to 7.2.3.

8.4.12

Logical Block Size (BP 129 to 132)
This field shall specify as a 16-bit number the size in bytes of a Logical Block.

This field shall be recorded according to 7.2.3.

8.4.13

Path Table Size (BP 133 to 140)
This field shall specify as a 32-bit number the length in bytes of a recorded occurrence of the Path Table
identified by this Volume Descriptor.

This field shall be recorded according to 7.3.3.

8.4.14

Location of Occurrence of Type L Path Table (BP 141 to 144)
This field shall specify as a 32-bit number the Logical Block Number of the first Logical Block allocated to the
Extent which contains an occurrence of the Path Table. Multiple-byte numerical values in a record of this
occurrence of the Path Table shall be recorded with the least significant byte first.

This field shall be recorded according to 7.3.1.

8.4.15

Location of Optional Occurrence of Type L Path Table (BP 145 to 148)
This field shall specify as a 32-bit number the Logical Block Number of the first Logical Block allocated to the
Extent which contains an optional occurrence of the Path Table. If the value is 0, it shall mean that the Extent
shall not be expected to have been recorded. Multiple-byte numerical values in a record of this occurrence of the
Path Table shall be recorded with the least significant byte first.

This field shall be recorded according to 7.3.1.

8.4.16

Location of Occurrence of Type M Path Table (BP 149 to 152)
This field shall specify as a 32-bit number the Logical Block Number of the first Logical Block allocated to the
Extent which contains an occurrence of the Path Table. Multiple-byte numerical values in a record of this
occurrence of the Path Table shall be recorded with the most significant byte first.

This field shall be recorded according to 7.3.2.

8.4.17

Location of Optional Occurrence of Type M Path Table (BP 153 to 156)
This field shall specify as a 32-bit number the Logical Block Number of the first Logical Block allocated to the
Extent which contains an optional occurrence of the Path Table. If the value is 0, it shall mean that the Extent