| _<^{width{4em}. Value | Meaning |
|---|---|
| &02 | Command aborted by controller |
| &07 | Write fault |
| &08 | Drive not ready |
| &09 | Track 0 not found |
| &13 | Uncorrected data error |
| &16 | Sector ID field not found |
| &17 | Bad block mark detected |
| &18 | No data address mark |
| &20 | No DRQ when expected |
| &21 | Drive busy when commanded |
| &22 | Drive busy on command completion |
| &23 | Controller did not respond within timeout |
| &24 | Unknown code in error register |
| _<^{width{4em}. Value | Meaning |
|---|---|
| &01 | Abort command accepted |
| &02 | Invalid command issued |
| &03 | Invalid command parameter |
| &04 | Head positioning, disc access, or drive check before SPC issued |
| &05 | TST command after SPC command |
| &06 | USELD for a drive has not been returned |
| &07 | Write fault detected by interface |
| &08 | Drive not ready |
| &09 | Seek complete timed out |
| &0A | SEK, or disc access issued during a seek |
| &0B | Next cylinder address is too big |
| &0C | Invalid step rate: highest-speed seek specified in normal mode |
| &0D | SEK, or disc access issued to drive with seek error |
| &0E | Data overrun (memory is slower than the drive) |
| &0F | Head address too high |
| &10 | Error correction code detected an error |
| &11 | CRC error in data area |
| &12 | Error correction code corrected an error |
| &13 | Error correction code failed in data area |
| &14 | In CMPD command data mismatched from host and disc |
| &15 | CRC in ID field (never generated) |
| &16 | ID search timed out |
| &17 | ID area has bad address mark |
| &18 | Missing address mark |
| &19 | Drive write protected |
| _<^{width{4em}. Value | Meaning |
|---|---|
| &01 | Fatal error, controller hardware error |
| &02 | Fatal error, command timed out; drive problem |
| &03 | Fatal error, track 0 not found; drive problem |
| &10 | Critical error, seek failed |
| &20 | Recoverable error, non specific command error |
| &21 | Data overrun |
| &22 | Data CRC error |
| &23 | Sector or ID not found |
| &24 | Missing address mark |
| _<^{width{4em}. Bit | Meaning |
|---|---|
| 0 | Drive busy |
| 1 | Track 0 found |
| 2 | Lost data |
| 3 | CRC error |
| 4 | Record not found |
| 5 | Write failed |
| 6 | Drive is write protected |
| 7 | Drive was already running |