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Thread: USB external hard drive

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  1. #1
    Join Date
    Feb 2013
    Beans
    801
    Distro
    Ubuntu

    Question USB external hard drive

    I have Ubuntu 12.10 installed on my internal HDD and daily 13.04 on my external usb hdd. Grub2 correctly identifies both installations, and bot run just fine after booting. When I choose the 13.04 entry after booting the internal hdd this message appears
    Code:
    HDIO_GET_IDENTITY failed
    after 15 seconds or so the message dissappears and 13.04 boots just fine.
    This slows the boot process - if I choose to boot to
    Code:
    usb storage device
    directly the messages doesn't appear, but the boot process is just as slow.
    I've searched on line and found plenty references to the message, but no solutions. I'd like to fix this.

    Dell Inspiron 6000 Intel celeron 1.5Gz
    2 Gb memory
    Code:
    /dev/sda:
     Timing cached reads:   746 MB in  2.00 seconds = 372.78 MB/sec
     Timing buffered disk reads: 104 MB in  3.01 seconds =  34.50 MB/sec
    pfeiffep@de:~$ sudo hdparm -i /dev/sda
    
    
    /dev/sda:
    
    
     Model=TOSHIBA MK4026GAX, FwRev=PA102D, SerialNo=75CI6825T
     Config={ Fixed }
     RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=48
     BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=8
     CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78140160
     IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
     PIO modes:  pio0 pio1 pio2 pio3 pio4 
     DMA modes:  sdma0 sdma1 sdma2 mdma0 mdma1 mdma2 
     UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 
     AdvancedPM=yes: unknown setting WriteCache=enabled
     Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6
    
    
     * signifies the current active mode
    Code:
    pfeiffep@de:~$ sudo hdparm -tT /dev/sdb
    
    
    /dev/sdb:
     Timing cached reads:   1018 MB in  2.00 seconds = 508.97 MB/sec
     Timing buffered disk reads:  80 MB in  3.03 seconds =  26.37 MB/sec
    pfeiffep@de:~$ sudo hdparm -i /dev/sdb
    
    
    /dev/sdb:
    SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 10 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
     HDIO_GET_IDENTITY failed: Invalid argument
    Gparted correctly identifies the drive as SAMSUNG MP0402H.

    Any ideas about the HDIO .... message, and about the speed reported?

    TIA
    Pete
    Last edited by pfeiffep; April 4th, 2013 at 07:03 PM. Reason: additional info

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