+========-=======-=======-=======-=======-=======+
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|-------+--------+--------+--------+--------+-------+--------+-------|
| BSY | DRDY | DWF | DSC | DRQ | CORR | IDX | ERR |
+=============================================+

- BSY (Busy) is set whenever the drive has access to the Command Block Registers. The host should not access the Command Block Register when BSY=1. When BSY=1, a read of any Command Block Register shall return the contents of the Status Register.
- DRDY (Drive Ready) indicates that the drive is capable of responding to a command. When there is an error, this bit is not changed until the Status Register is read by the host, at which time the bit again indicates the current readiness of the drive. This bit shall be cleared at power on and remain cleared until the drive is ready to accept a command.
- DWF (Drive Write Fault) indicates the current write fault status. When an error occurs, this bit shall not be changed until the Status Register is read by the host, at which time the bit again indicates the current write fault status.
- DSC (Drive Seek Complete) indicates that the drive heads are settled over a track. When an error occurs, this bit shall not be changed until the Status Register is read by the host, at which time the bit again indicates the current Seek Complete status.
- DRQ (Data Request) indicates that the drive is ready to transfer a word or byte of data between the host and the drive.
- CORR (Corrected Data) indicates that a correctable data error was encountered and the data has been corrected. This condition does not terminate a data transfer.
- IDX (Index) is set once per disk revolution.
- ERR (Error) indicates that an error occurred during execution of the previous command. The bits in the Error Register have additional information regarding the cause of the error.