Logical Drive Table
00h 2 BYTEs Actual drive designator and ":"
02h 65 BYTEs Current ASCIIZ path for this drive; includes
root directory "\"
43h WORD Current status of drive:
| Drive
Status |
| Bit |
Dec |
Hex |
Description |
| 0 |
1 |
0001h |
Unknown |
| 1 |
2 |
0002h |
| 2 |
4 |
0004h |
| 3 |
8 |
0008h |
| 4 |
16 |
0010h |
| 5 |
32 |
0020h |
| 6 |
64 |
0040h |
| 7 |
128 |
0080h |
| 8 |
256 |
0100h |
| 9 |
512 |
0200h |
| 10 |
1024 |
0400h |
| 11 |
2048 |
0800h |
| 12 |
4096 |
1000h |
SUBSTed unit |
| 13 |
8192 |
2000h |
Unknown |
| 14 |
16384 |
4000h |
Ready for use |
| 15 |
32768 |
8000h |
Unknown |
45h DWORD Pointer to DOS DPB for drive
49h WORD First cluster of current directory; FFFFh if drive
never accessed, 0000h if root directory
4Bh WORD Unknown
4Dh WORD Unknown
4Fh WORD Number of bytes to skip over when reporting
directory; 0002h for normal drive, more for a
SUBSTed unit
DOS 4.xx
51h 7 BYTEs Unknown, default values of 0 |