Format of FCB reserved field for DOS 1.10-1.25 |
| Offset | Size | Description | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
18h |
BYTE |
|
|||||||||
|
19h |
WORD |
starting cluster number on disk | |||||||||
|
1Bh |
WORD |
current absolute cluster number on disk | |||||||||
|
1Dh |
WORD |
current relative cluster number within file | |||||||||
|
1Fh |
BYTE |
unused |