[/dev/sds] I/O error, sense_key=0xc0, asc=0x20, ascq=0x48

Portable Drives My Passport
1

Hi, I’m having issues with my Western Digital My Book Mirror Edition.

It’s connected to a QNAP NAS and the recent firmware update improved it to show up any errors coming from the USB devices (Sence Keys).

I keep constantly getting these errors:

[/dev/sds] I/O error, sense_key=0xc0, asc=0x20, ascq=0x48, CDB=28 00 6e 80 11 10 00 00 08 00 . [/dev/sds] I/O error, sense_key=0xc0, asc=0x20, ascq=0x48, CDB=28 00 6e 80 11 10 00 00 08 00 .
[/dev/sds] I/O error, sense_key=0xc0, asc=0x20, ascq=0x48, CDB=28 00 6e 80 11 10 00 00 08 00 .
[/dev/sds] I/O error, sense_key=0xc0, asc=0x20, ascq=0x48, CDB=28 00 6e 80 11 10 00 00 08 00 .
[/dev/sds] I/O error, sense_key=0xc0, asc=0x20, ascq=0x48, CDB=28 00 6e 80 11 10 00 00 08 00 .

 What does those mean?
These don’t seem to be the default codes http://www.t10.org/lists/2sensekey.htm.

2

Hello,

Please run a diagnostic using Western Digital Data Lifeguard Diagnostics. Run a quick test an then a extended test. If either test fails it will come up with an error code. You may find what this error code means at the link below.

http://support.wdc.com/techinfo/general/errorcodes.asp?lang=en#v10

3

Western Digital Logo

Test Option: QUICK TEST
Model Number: WD My Book
Unit Serial Number: WU2U100XXXXX
Firmware Number: 1011
Capacity: 1000.20 GB
SMART Status: PASS
Test Result: PASS
Test Time: 22:23:36, May 02, 2013

Test Option: EXTENDED TEST
Model Number: WD My Book
Unit Serial Number: WU2U100XXXXX
Firmware Number: 1011
Capacity: 1000.20 GB
SMART Status: PASS
Test Result: PASS
Test Time: 15:12:59, May 03, 2013

Test Option: WRITE ZEROS
Model Number: WD My Book
Unit Serial Number: WU2U100XXXXX
Firmware Number: 1011
Capacity: 1000.20 GB
SMART Status: PASS
Test Result: COMPLETE
Test Time: 04:56:56, May 04, 2013

These tests pass. Is there any more tests or way to identify the error codes that this USB device sends?