Unable to Format HP 16GB v239 Pen Drive

Sir,
           We have HP 16GB v239 Pen Drive which storage limit is  15.02GB but while formatting the device storage shows on only 302MB limit for NTFS.....
      Now I surprised for storage an error so we could not have format it to back to its original capacity storage(15.02GB)....
Please guide me

It's a flaw in how DU reports the free space when the device is freshly formatted. If you select the Desktop icon and press COMMAND-I to open the Get Info window you will see that the full 15.7 GBs is reported as free.

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    Buffer I/O error on device sdb, logical block 4
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    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
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    Buffer I/O error on device sdb, logical block 0
    Buffer I/O error on device sdb, logical block 1
    sd 6:0:0:0: [sdb] Unhandled sense code
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    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 16
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 16
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 40 00 00 08 00
    end_request: I/O error, dev sdb, sector 64
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 01 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 256
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 01 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 256
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 01 08 00 00 08 00
    end_request: I/O error, dev sdb, sector 264
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 01 08 00 00 08 00
    end_request: I/O error, dev sdb, sector 264
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 01 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 272
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 01 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 272
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 03 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 768
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 03 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 768
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 03 08 00 00 08 00
    end_request: I/O error, dev sdb, sector 776
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 03 08 00 00 08 00
    end_request: I/O error, dev sdb, sector 776
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 03 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 784
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 03 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 784
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 16
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 16
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 08 00 00 08 00
    end_request: I/O error, dev sdb, sector 8
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 10 00 00 08 00
    end_request: I/O error, dev sdb, sector 16
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 08 00 00 08 00
    end_request: I/O error, dev sdb, sector 8
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 80 00 00 08 00
    end_request: I/O error, dev sdb, sector 128
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 0
    sd 6:0:0:0: [sdb] Unhandled sense code
    sd 6:0:0:0: [sdb] Result: hostbyte=0x00 driverbyte=0x08
    sd 6:0:0:0: [sdb] Sense Key : 0x3 [current]
    Info fld=0x0
    sd 6:0:0:0: [sdb] ASC=0x0 ASCQ=0x0
    sd 6:0:0:0: [sdb] CDB: cdb[0]=0x28: 28 00 00 00 10 00 00 00 08 00
    end_request: I/O error, dev sdb, sector 4096
    fdisk:
    [theta@boolean-pc ~]$ fdisk /dev/sdb
    Unable to read /dev/sdb
    sfdisk:
    [theta@boolean-pc ~]$ sudo sfdisk /dev/sdb
    Password:
    Checking that no-one is using this disk right now ...
    BLKRRPART: Input/output error
    OK
    Disk /dev/sdb: 1905 cylinders, 64 heads, 32 sectors/track
    read: Input/output error
    sfdisk: read error on /dev/sdb - cannot read sector 0
    /dev/sdb: unrecognized partition table type
    Old situation:
    No partitions found
    Input in the following format; absent fields get a default value.
    <start> <size> <type [E,S,L,X,hex]> <bootable [-,*]> <c,h,s> <c,h,s>
    Usually you only need to specify <start> and <size> (and perhaps <type>).
    /dev/sdb1 :
    /dev/sdb1 0+ 1904 1905- 1950719+ 83 Linux
    /dev/sdb2 :
    /dev/sdb2 0 - 0 0 0 Empty
    /dev/sdb3 :
    /dev/sdb3 0 - 0 0 0 Empty
    /dev/sdb4 :
    /dev/sdb4 0 - 0 0 0 Empty
    New situation:
    Units = cylinders of 1048576 bytes, blocks of 1024 bytes, counting from 0
    Device Boot Start End #cyls #blocks Id System
    /dev/sdb1 0+ 1904 1905- 1950719+ 83 Linux
    /dev/sdb2 0 - 0 0 0 Empty
    /dev/sdb3 0 - 0 0 0 Empty
    /dev/sdb4 0 - 0 0 0 Empty
    Warning: no primary partition is marked bootable (active)
    This does not matter for LILO, but the DOS MBR will not boot this disk.
    Do you want to write this to disk? [ynq] y
    read: Input/output error
    sfdisk: read error on /dev/sdb - cannot read sector 0
    Re-reading the partition table ...
    BLKRRPART: Input/output error
    If you created or changed a DOS partition, /dev/foo7, say, then use dd(1)
    to zero the first 512 bytes: dd if=/dev/zero of=/dev/foo7 bs=512 count=1
    (See fdisk(8).)
    I tried rewriting the partition table using testdisk but was of no avail.
    Last edited by theta (2011-08-02 16:01:49)

    looks to me like a defunct pendrive.

  • Pen drive stop working

    Sir, I have purchesed 8 GB pen drive through printvenue before three months.
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    HP sucks...

  • Pen drive

    sir i have an 32gb hp pen drive but unfortunately it was showing only 500mb

    Veersingh, welcome to the forum.
    What is the model of the pen drive? 
    Did you format the drive?
    Signature:
    HP TouchPad - 1.2 GHz; 1 GB memory; 32 GB storage; WebOS/CyanogenMod 11(Kit Kat)
    HP 10 Plus; Android-Kit Kat; 1.0 GHz Allwinner A31 ARM Cortex A7 Quad Core Processor ; 2GB RAM Memory Long: 2 GB DDR3L SDRAM (1600MHz); 16GB disable eMMC 16GB v4.51
    HP Omen; i7-4710QH; 8 GB memory; 256 GB San Disk SSD; Win 8.1
    HP Photosmart 7520 AIO
    ++++++++++++++++++
    **Click the Thumbs Up+ to say 'Thanks' and the 'Accept as Solution' if I have solved your problem.**
    Intelligence is God given; Wisdom is the sum of our mistakes!
    I am not an HP employee.

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