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Unknown USB bridge

posted Feb 16, 2017, 10:01 AM by Allen Gattis   [ updated Mar 14, 2017, 5:12 AM ]
When checking a disk with smartmontools, you may get this 

allen@work:~$ sudo smartctl -a  /dev/sdc

/dev/sdc: Unknown USB bridge [0x0bc2:0xab28 (0x100)]
Please specify device type with the -d option.

Use smartctl -h to get a usage summary

Check the page below and add the -d option.
https://www.smartmontools.org/wiki/Supported_USB-Devices

allen@work:~$ sudo smartctl -d sat -a  /dev/sdc

=== START OF INFORMATION SECTION ===
Device Model:     ST4000LM016-1N2170
Serial Number:    W8009R7T
LU WWN Device Id: 5 000c50 08ba9a185
Firmware Version: 0002
...
...
...

If that fails, you may need to switch from the newer 'uac' usb driver back to the old one


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