Codice:
f3probe --destructive --time-ops /dev/sdb
F3 probe 7.0
Copyright (C) 2010 Digirati Internet LTDA.
This is free software; see the source for copying conditions.

WARNING: Probing normally takes from a few seconds to 15 minutes, but
         it can take longer. Please be patient.

Bad news: The device `/dev/sdb' is a counterfeit of type limbo

You can "fix" this device using the following command:
f3fix --last-sec=4719792 /dev/sdb

Device geometry:
	         *Usable* size: 2.25 GB (4719793 blocks)
	        Announced size: 15.00 GB (31457280 blocks)
	                Module: 16.00 GB (2^34 Bytes)
	Approximate cache size: 0.00 Byte (0 blocks), need-reset=yes
	   Physical block size: 512.00 Byte (2^9 Bytes)

Probe time: 3'09"
 Operation: total time / count = avg time
      Read: 44.93s / 4198 = 10.7ms
     Write: 1'24" / 2173 = 38.6ms
     Reset: 1'01" / 11 = 5.54s
Non è che solo perché compri la bamba dai neger ci devi comperare pure le sd