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This section provides an explanation of the encoded SCSI POST error codes
and detailed information about each code.
Please note, that the SCSI POST errors and the
Advanced Diagnostics Hard Drive Diagnostics error codes are different!
If you are running Advanced Diagnostics and get an error code 0210401H 9231, go to
the Adv. Diagnostics SCSI Error page.
So, to be clear, the decoding key must start with a "9"!
Error messages are displayed on the screen as three, four, five, eight,
twelve or thirteen digits. An X in an error message can be any number.
The following figure shows which digits display the shorter POST errors.
The figure also defines additional SCSI information:
Important Note:
Non-IBM device error codes and documentation supersede this list.
Duplicate SCSI ID settings will cause misleading error symptoms or messages.
The following figure shows which digits display the shorter POST errors. The figure also defines additional SCSI information:
+--------- Device Identification
|
| +--- Status/Error Code (0000 codes, not-0000 codes)
| |
-----------+ ---+
RDDDPL[S]C(B) QEET
|--+|| | | | |-+|
| ||| | | | | |+--- Test state
| ||| | | | | +---- Error code Extension
| ||| | | | +------ Qualifier
| ||| | | |
| ||| | | +--------- Bus (optional; 0: internal, 1: external)
| ||| | +----------- Capacity of the device
| ||| +------------- [Slot number of the device]
| ||+--------------- LUN (usually 0)
| |+---------------- PUN (SCSI ID #)
| |
| +----------------- Device Number
+-------------------- Reserved Digit (usually 0)
The Slot Number is always given on the 12-digit error codes for adapters; the Bus Code is shown on device errors in 8-digit error codes. The Slot-number is then omitted.
Please note, that the SCSI POST errors and the
Advanced Diagnostics Hard Drive Diagnostics error codes are different!
If you are running Advanced Diagnostics and get an error code 0210401H 9231, go to
the Adv. Diagnostics SCSI Error page.
So, to be clear, the decoding key must start with a "9"!
As an example, if you have SCSI error code 0210 50A0, each digit decodes as follows:
| Digit |
Information |
| 0 |
Reserved digit (usually 0) |
| 210 |
Device number 210 indicates hard disk |
| 5 |
Physical Unit (SCSI ID) assigned is 5 |
| 0 |
Logical Unit Number (not used usually 0) |
| A |
The device capacity is 60MB (A=60MB) |
| 0 |
The device is connected to the internal bus |
Note: The leading zero may be suppressed!
Example 1047000 221 is:
RDDD = (0)104 = IBM PS/2 SCSI-2 Adapter
PL = 70 = PUN 7 LUN 0 = Adapter
[S]CB = []00 = Unknown capacity, Internal Bus
QEET = 221x Global timeout on adapter (device did not respond), T=0 N/A.
Code Types
RDDD Codes
B Codes
QEET 0000 Codes
QEET Errors
Q Codes
Test Status Codes
RDDD Codes for Adapters
| RDDD | Device Type or Information |
|---|
| 0037 | SCSI on the System board |
| 0096 | SCSI adapter with cache |
| 0112 | SCSI adapter without cache |
| 0206 | SCSI-2 adapter |
RDDD Codes for Devices
| RDDD | Device Type or Information |
|---|
| 0208 | Unknown device type |
| 0209 | Direct access - removable media, and/or other than 512 byte blocks |
| 0210 | Direct access - hard disk, 512 byte blocks |
| 0211 | Sequential access (tape) |
| 0212 | Printer |
| 0213 | Processor |
| 0214 | Write Once, Read Multiple (W.O.R.M.) |
| 0215 | Read only (CD-ROM) |
| 0216 | Scanner |
| 0217 | Optical Memory (read/write optical disk) |
| 0218 | Changer (multiple tray CD-ROM) |
| 0219 | Communications |
C Codes
Device Capacity
| A |
60MB |
B |
80MB |
C |
120MB |
D |
160MB |
E |
320MB |
| F |
400MB |
G |
40MB |
H |
1GB |
I |
104MB |
J |
212MB |
| K |
CD-ROM |
M |
2GB (Wide) |
N |
540MB |
O |
1GB |
P |
2GB |
| Q |
540MB |
T |
360MB |
V |
270MB |
W |
540MB |
a |
364MB |
| b |
728MB |
d |
2GB |
t |
1GB |
U |
Unknown |
|
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B Codes
Code does only apply on Dual Bus SCSI adapters!
Normally the value for B is 0, since the internal and external connector are one physical SCSI bus only.
| B | Device Type or Information |
|---|
| 0 | Dual SCSI adapter (internal bus) |
| 1 | Dual SCSI adapter (external bus) |
QEET 0000 Codes
| PLSC | QEET | Information |
|---|
| 0100 | 0000 | On systems with NVRAM, SCSI setup data not located, or the checksum did not verify. On systems w/o NVRAM (Model 8550 for example), setup data must be on the 1st hard disk. |
| 0200 | 0000 | Configuration error. No hard disk found at PUN 6, LUN 0 for 161, 162, 165 system error path. Might be an unsupported configuration. |
| 0300 | 0000 | No space available in extended BIOS data area for SCSI data table (possibly to many adapters installed). |
| 0400 | 0000 | ROM modules not found on adapter (IML based systems only). Running setup might correct it. |
| 0500 | 0000 | ROM checksum error on 2nd 16K portion of 32K ROM |
| 0600 | 0000 | ROM access control port error |
Q Codes
All error codes with Q = 1 are developed using information returned by either an adapter or device. The Q value
defines the origin of the EE code that is reported. Error codes (EE) with Q = 4 or 5 may be reported that are not listed here or can actually have a definition other than that given, depending on the device.
| Q | Information |
|---|
| 2 | Command error field of command complete status block returned by the adapter |
| 3 | SCSI Status field of the command complete status block or command error field values indicating software problems (<20H) |
| 4 | Sense key value returned by a device (might be manufacturer-dependent) |
| 5 | Additional sense byte (byte 12) of sense information from device |
| 6 | Device error code field of command complete status block |
| 7 | Device errors not normally considered an error, but considered an error based on when the code was returned (medium corrupted error on device with non removable media) |
QEET Errors (other than 0000)
These are specific QEET error codes, preceded by a RDDD indicating an adapter.
Note: A number for S other than 0
indicates an error on an adapter-card, (or device attached to the adapter) in slot S.
If S is 0, suspect the system board.
| QEET | Information |
|---|
| 001x | 8032/80188/80C186 ROM test failure |
| 002x | Local RAM test failure |
| 003x | If RDDD=0096: Bad TERM-fuse or bad termination.
If RDDD=0112: local RAM address test failure. |
| 004x | 8032/80188/80C186 internal peripheral test failure |
| 005x | If RDDD=0112 or 0096: Buffer control test failure, or LTB failed.
If RDDD=0037: system-board SCSI failed. |
| 006x | If RDDD=0096: Buffer RAM test failure
If RDDD=0112: Undefined error condition |
| 007x | System interface control chip test failure |
| 008x | SCSI internal interface test failed |
| 00Ax | SCSI external interface test failed |
|
|---|
| 107x | Adapter hardware failure |
| 10Cx | Command failed |
| 10Ex | Command error (invalid command or parameter) |
| 10Fx | Sequencing error |
| 110x | Adapter internal error log contains entries. (Reported if no other errors on adapter exist.) |
| 180x | Time out |
| 181x | Adapter busy error |
| 182x | Unexpected interrupt presented by adapter |
| 183x | Adapter register test failure |
| 184x | Adapter reset failure |
| 185x | Adapter buffer test failure (on cached adapters) |
| 186x | Adapter reset count expired |
| 187x | Adapter registers not cleared on reset |
| 188x | Card ID in adapter microcode did not match ID in POS registers |
| 190x | Expected device did not respond |
| 19Yx | DMA Y arbitration level conflict (Y=assigned arbitration level) |
|
|---|
| 220x | Adapter hardware error |
| 221x | Global timeout on adapter (device did not respond) |
| 222x | Adapter DMA error |
| 223x | Adapter buffer defective |
| 224x | Command aborted by adapter |
|
|---|
| 301x | Invalid parameter in SCB |
| 303x | Command not supported |
| 304x | Command aborted by system |
| 305x | Command rejected (buffer not disabled) |
| 306x | Command rejected (Adapter diagnostic failure) |
| 307x | Format rejected |
| 308x | Assign rejected (command in process) |
| 309x | Assign rejected (device already assigned) |
| 30Ax | Command rejected (device not assigned) |
| 30Bx | Command rejected (maximum LBA exceeded) |
| 30Cx | Command rejected (16 bit card slot address range exceeded) |
| 313x | Invalid device for command |
| 3FFx | Status not returned by adapter |
|
|---|
| 401x | Recovered error (not an error condition) |
| 402x | Device not ready |
| 403x | Device medium error |
| 404x | Device hardware error |
| 405x | Illegal request for device |
| 406x | Device unit attention would not clear |
| 407x | Device data protect error |
| 409x | Device vendor unique error |
| 40Ax | Copy operation aborted by device |
| 40Bx | Device command aborted |
| 40Cx | Device search data command satisfied |
| 40Dx | Device volume overview (residual data remains in buffer) |
| 40Ex | Device mismatch (source data did not match medium data) |
|
|---|
| 500x | Check condition on device, no sense data returned |
| 501x | No index or sector |
| 502x | Seek incomplete |
| 503x | Write fault |
| 504x | Drive not ready |
| 505x | Drive not selected |
| 506x | No track zero found |
| 507x | Multiple drives selected |
| 508x | Logical unit communication failure |
| 509x | Head positioning error (track following error) |
| 510x | CRC or ECC error in ID field |
| 511x | Unrecoverable read error |
| 512x | No address mark (ID field) |
| 513x | No address mark (data field) |
| 514x | Record not found |
| 515x | Seek error |
| 516x | Data synchronization error |
| 517x | Recoverable read error |
| 518x | ECC recovered read error |
| 519x | Defect list error |
| 51Ax | Parameter overrun |
| 51Bx | Synchronous transfer error |
| 51Cx | Primary defect list not found |
| 51Dx | Compare error |
| 520x | Invalid command |
| 521x | Illegal logical block address (LBA) |
| 522x | Illegal function for device type |
| 524x | Illegal command block field |
| 525x | Invalid LUN |
| 526x | Illegal field in parameter list |
| 528x | Media changed |
| 529x | Power-on or bus device reset occurred (not an error) |
| 52Ax | Mode select parameters changed (not an error) |
| 531x | Media format corrupted |
| 532x | Defect spare location unavailable |
| 540x | Device RAM failure |
| 541x | Data path diagnostic failure |
| 542x | Power-on diagnostic failure |
| 543x | Message rejected |
| 544x | Internal controller error |
| 545x | Device was unable to reconnect |
| 547x | Interface parity error |
| 548x | Initiator detected error |
| 549x | Illegal command or command out of sequence error |
| 5F0x | Format in progress (not an error) |
| 5F1x | Spinup in progress |
|
|---|
| 601x | SCSI bus reset occurred |
| 602x | SCSI interface fault |
| 610x | Selection timeout error (device not available) |
| 611x | Unexpected bus free |
| 612x | Mandatory SCSI message rejected |
| 613x | Invalid SCSI phase sequence |
| 620x | Short length record error |
|
|---|
| 702x | Device not ready (removable media devices) |
| 704x | Device not ready (non removable media devices) |
| 728x | Media changed error would not clear |
| 731x | Medium format corrupted (format unit interrupted - format must be issued again) |
| 7F0x | Format in progress (prior format unit issued being completed) |
| 7F1x | Spinup in progress |
Test Status Codes
| T | Information |
|---|
| 0 (Zero) | Not applicable for error code |
| A | Adapter initialization error |
| B | Adapter reset |
| C | Adapter register test |
| D | Adapter buffer test phase 1 (on cached adapters) |
| E | Adapter buffer test phase 2 (on cached adapters) |
| F | Adapter buffer test phase 3 (on cached adapters) |
| G | Adapter buffer test phase 4 (on cached adapters) |
| H | Adapter (buffer enable, buffer size, retry, enable) |
| I | Device assignment sequence |
| J | Device not ready (initial unit attention clearing) |
| K | Device reset |
| L | Device starting phase |
| M | Device in process of starting |
| N | Device block size determination |
| O | Device self-test |
| P | Device single block read (LBA) |
| Q | Device double block read (LBA) |
| S | Error occurred after device testing completed |
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