Chapter 5 Troubleshooting
A404/A405: Calibration
188 SuperLoader User’s Guide
A404/A405: Calibration 5
A404 and A405 are related event logs regarding drive calibration. A405 is
a continuation of A404. Both event logs contain 20 long words.
Figure 111 Calibration
Block Descriptor
Table 27 Calibration
Field Descriptions
Long
Word
Byte 03 Byte 02 Byte 01 Byte 00
1
(MSB) Media ID
2
Media ID (LDB)
3
Cal Fail Cal Info Flags
4-20
Field Description
Media ID Identifier placed on the media when the calibration tracks are
written. This is used to help track which piece of media was in
the drive at the time of failure. A new, unused, piece of media
will have this happen on the first write command from BOT or
if the drive has failed during calibration and a write command
from BOT will rewrite the calibration tracks changing the
media ID at the time. If the calibration failed the Media ID will
not be valid.
Cal Fail: Status of the Calibration (reason for calibration failure)
Bit
Description
15 Calibration Track was Not Found in the Correct Location
(there are multiple Calibration tracks on a tape)
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