massimo@massimo-TravelMate-2700:~$ dmesg | tail 
[11782.360984] sd 11:0:0:0: [sdb] CDB: 
[11782.360987] Read(10): 28 00 03 e7 ff 80 00 00 08 00
[11782.361002] end_request: I/O error, dev sdb, sector 65535872
[11782.361013] Buffer I/O error on device sdb1, logical block 32767872
[11782.361020] Buffer I/O error on device sdb1, logical block 32767873
[11782.361024] Buffer I/O error on device sdb1, logical block 32767874
[11782.361028] Buffer I/O error on device sdb1, logical block 32767875
[11782.364752] FAT-fs (sdb1): unable to read boot sector
[11813.200071] usb 1-2: reset high-speed USB device number 21 using ehci-pci
[11844.176079] usb 1-2: reset high-speed USB device number 21 using ehci-pci
massimo@massimo-TravelMate-2700:~$