Initialization Procedure - IBM 3741 Data Station Reference Manual

INITIALIZATION PROCEDURE
To initialize the disk, do the following:
1.
I nsert a diskette in drive
1.
If the disk is bad or
uninitialized, you may get several disk errors before
X R mode is displayed.
2. Press FUNCT SEL lower, then DELETE REC.
3.
Key the following data (each of these fields is
optional and can be left blank)
• Volume I D in positions
1-6
• Sector sequence code in positions
7-8
(normally
left blank). Valid entries, in addition to the posi-
tions being left blank, are shown in Figure
25.
Most commonly used are
01
(same as being left
blank) and
02.
Entering
01
causes the sector
arrangement to be
1, 2, 3, 4, .... 25, 26.
Entering
02
causes the sector arrangement to be
1,
3, 5, ....
25, 2, 4, .... 24, 26.
Blank
01 02 03 04 05 06 07 08
1 1 1 1 1 1 1 1
1
2 2 3 4 5 6 7 8
9
3 3 5 7 9
11 13 15 17
4 4 7 10 13 16
19 22 25
5 5 9 13 17 21
25
2
2
6 6 11 16 21 26
2 9 10
7 7 13 19
25
2
8 16 18
8 8 15 22
2
7
14 23 26
9
9 17 25 6 12 20 3 3
10 10 19
2 10 17 26 10 11
11 11 21
5
14 22
3
17
19
12 12 23
8 18 3 9 24 4
13 13 25 11 22 8 15 4 12
14 14 2 14 26 13 21 11 20
15 15 4 17 3 18 4 18 5
16 16
6 20 7 23 10 25 13
17 17 8 23 11 4 16
5 21
18 18 10 26 15 9 22 12 6
19 19 12
3 19
14
5 19 14
20 20 14 6 23 19 11 26 22
21 21 16 9 4 24 17 6 7
22 22
18 12 8 5 23 13 15
23 23 20 15
12
19
6 20 23
24 24 22 18
16 15 12 7 8
25 25 24 21 20 20 18 14 16
26 26 26 24 24 25 24 21 24
Figure 25. Disk Record Sequences
52
09
1
10
19
2
11
20
3
12
21
4
13
22
5
14
23
6
15
24
7
16
25
8
17
26
9
18
• First bad track in positions
9-10
• Second bad track in positi ons
11-12
• Blank in positions
13-14
• Blank for record length of
80
or L for record
length of
128
in position
15
4. Press FUNCT SEL lower, hold down NUM SH 1FT
and press the I key.
10
1
11
21
2
12
22
3
13
23
4
14
24
5
15
25
6
16
26
7
17
8
18
9
19
10
20
Note:
If the numeric shift key is not held down,
only the disk checking function occurs. See Disk
Checking in this chapter .
11
12 13
1 1 1
12 13 14
23 25 2
2 2 15
13 14 3
24 26 16
3 3 4
14 15 1,7
25 4 5
4 16 18
15 5 6
26 17 19
5 6 7
16
18
20
6 7 8
17 19 21
7 8 9
18 20 22
8 9 10
19
21 23
9 10 11
20 22 24
10 11 12
21 23 25
11
12 13
22 24 26