IBM System/36 Maintenance Information Manual

803 Analyzing Disk Drive ERAP
Example Error History Table for Disk Drive X
ERROR HISTORY TABLE FOR DISK DRIVE X
FROM: XX/XX/XX XX:XX:XX TO: XX/XX/XX XX:XX:XX
CMD CMD SENSE BYTES PRESENT START RETRY
DATE TIME SRC CODE MOD SB 0 1 2 3 4 5 OP SS ADR SS ADR CNT
YYMMDD HHMMSS ............•.•......•...•.• HEX ...•.•...••.•..•.......•.•••••••.•....•••..•.•
XXXXXX XXX XXX XXXX XX XX XX XX XX XX XX XX XX XX XXX XXX XXXXXX XX
XXX XXX XXX XXX XXXX XX XX XX XX XX XX XX XX XX XX XXXXXX XXXXXX XX
XXXXXX XXXXXX XXXX XX XX XX XX XX XX XX XX XX XX XXXXXX XXXXXX XX
XXXXXX XXXXXX 193C B2 00 10 XX XX XX XX XX XX XX XXXXXX XXXXXX XX
Use the CMD CODE and SB fields (shown in the preceding example) to identify the disk drive selected, the
command being executed, and the sense data returned when the
SRC was recorded.
CMD CODE
The following information is contained in the command code field:
• The left character indicates the disk drive:
- A
= Drive A
- B
= Drive B
• The right character indicates the command being executed:
1
= Read
2
= Write
-
3= Scan
58
The following information is contained in the sense byte summary field:
• 80 Permanent ECC error
• 40 No record found error
• 20 Reserved
• 10 Temporary error
• 08 Hardware error
• 04 Reserved
• 02 ECC field inverted
• 01 Temporary error, corrected by ECC
Note: A disk utility (diskette
60), IBM part 6374373, is available to analyze intermittent disk problems.
Section 8. Disk Procedures 8-3

IBM System/36 Specifications

General

Brand	IBM
Model	System/36
Category	Desktop
Language	English