Table 25 - Typical Values for Formatting
FORMAT SECTOR SIZE
N
SC
GPL1
GPL2
FM
5.25"
Drives
128
128
512
1024
2048
4096
...
00
12
07
09
00
10
10
19
02
08
18
30
03
04
46
87
04
02
C8
FF
05
01
C8
FF
...
MFM
256
256
512*
1024
2048
4096
...
01
12
0A
0C
01
10
20
32
02
09
2A
50
03
04
80
F0
04
02
C8
FF
05
01
C8
FF
...
128
3.5"
FM
256
Drives
512
0
0F
07
1B
1
09
0F
2A
2
05
1B
3A
MFM
256
512**
1024
1
0F
0E
36
2
09
1B
54
3
05
35
74
GPL1 = suggested GPL values in Read and Write commands to avoid splice point
between data field and ID field of contiguous sections.
GPL2 = suggested GPL value in Format A Track command.
*PC/AT values (typical)
**PS/2 values (typical). Applies with 1.0 MB and 2.0 MB drives.
NOTE: All values except sector size are in hex.
60