!ERROR=4 and !ERROR=104 - Disk Not Ready
Error 4 - Disk Not Ready
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Attempting to access or write to a disk.
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The disk was not online.
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A floppy disk drive was empty or the door is not closed.
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The disk was write-protected.
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The disk did not logically exist. For additional information see the DSKSYN section in Disk Configuration.
Error 104 - Critical Disk Not Ready Error
An !ERROR=4 occurred during a critical operation (ODBC).