!ERROR=4 - Disk Not Ready

• Attempting to access or write to a disk.

• The disk was not online.

• A floppy disk drive was empty or the door is not closed.

• The disk was write-protected.

• The disk did not logically exist. For additional information see the DSKSYN section in Disk Configuration.

Error 104 - Catastrophic Error

An !ERROR=4 occurred during a critical operation.