Specifications

ATAPI For Streaming Tape QIC-157 Rev B
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write operation, this field indicates the block number of blocks not written to the medium. Whereas, as
an ATAPI extension to the SCSI standard, during a read operation this field indicates the number of
blocks read ahead in the buffer.
The Bytes in Buffer field indicate the number of bytes in the Device buffer. This information can be
used to determine the number of filemarks counted as blocks in the Blocks in Buffer field and shall
always represent whole blocks of data.
Table 6-61 Recommended Sense Key, ASC and ASCQ for READ POSITION Errors
Sense Key ASC ASCQ Description of Error
02 04 00 NOT READY, CAUSE NOT REPORTABLE
02 3A 00 MEDIUM NOT PRESENT
04 15 00 RANDOM POSITIONING ERROR
05 20 00 INVALID COMMAND OPERATION CODE
05 24 00 INVALID FIELD IN COMMAND PACKET
06 28 00 NOT READY TO READY TRANSITION
06 29 00 POWER ON, RESET, OR ATAPI SOFT RESET OCCURRED
06 2A 01 MODE PARAMETERS CHANGED