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> NTFS Basics > exFAT Overview > Volume GUID Directory Entry

Volume GUID Directory Entry

Offset

Size

Description

Comments

0 (0x00)

1

EntryType

0xA0

1 (0x01)

1

SecondaryCount

Must be 0x00
2 (0x02)

2

SetChecksum  
4 (0x04)

2

GeneralPrimaryFlags
Bits Size Attribute Comments
0 1 AllocationPossible Must be 0
1 1 NoFatChain Must be 0
2 14 CustomDefined  
 
6 (0x06)

16

VolumeGuid All values are valid except null GUID {00000000-0000-0000-0000-000000000000}
2 (0x16)

10

Reserved  

This is a benign primary directory entry and may not present in a file system.

 

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