IBM 6580

Start
Read
Operation
Add 1 To
Counter
Read Again
No
>--"'~GoOn
No
'---~
Soft
ReadlWrite
Error
Reset
Counters To
= 0
Go On
F lag Sector Or
Replace Disk *
Figure 7-21. Read/Write Error Counting
Start
Write
Operation
Read Back
Check
Add
1 To
Counter
No
*Reset Counters To = 0
Flag Sector Or
Replace Disk *
~----I~ Go On
Chapter 7. Diskette Unit 7-21