| Min version | XP | 2003/XP64 SP1 | |
|---|---|---|---|
| Max version | 10 TH2 | ||
| Architecture | x86 | x64 | |
| x86 offset offset:bitpos | Field Name | x64 offset offset:bitpos | |
| 0x0000 | uint16_t CompressionFormatAndEngine | 0x0000 | |
| 0x0002 | uint8_t CompressionUnitShift | 0x0002 | |
| 0x0003 | uint8_t ChunkShift | 0x0003 | |
| 0x0004 | uint8_t ClusterShift | 0x0004 | |
| 0x0005 | uint8_t Reserved | 0x0005 | |
| 0x0006 | uint16_t NumberOfChunks | 0x0006 | |
| 0x0008 | unsigned long[1] CompressedChunkSizes | 0x0008 | |