3DM 2 Online Help

0042 Primary DCB read error occurred
This message will be sent when the controller finds an error while reading the primary copy of the Disk Configuration Block (DCB). The back-up copy of the DCB will be read if this error occurs. If a valid DCB is found, the primary DCB is re-written to rectify the errors found.
If this error occurs, we recommend verifying the unit. See Starting a Verify Manually.

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