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I bought a Kingston DT108 16GB USB pen drive and Ubuntu did not recognize it. What should i do?

Output of dmesg | tail after connecting pen drive:

[ 1455.253010] CPU5: Package power limit notification (total events = 488)   
[ 1455.253013] CPU1: Package power limit notification (total events = 489)  
[ 1455.263966] CPU4: Package power limit normal  
[ 1455.263969] CPU2: Package power limit normal  
[ 1455.263972] CPU0: Package power limit normal  
[ 1455.263975] CPU6: Package power limit normal  
[ 1455.263998] CPU1: Package power limit normal  
[ 1455.264001] CPU5: Package power limit normal  
[ 1455.264004] CPU7: Package power limit normal  
[ 1455.264007] CPU3: Package power limit normal
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What is the output of "dmesg | tail" after connecting your pen drive? –  harisibrahimkv May 2 '12 at 12:38
    
[ 1455.253010] CPU5: Package power limit notification (total events = 488) [ 1455.253013] CPU1: Package power limit notification (total events = 489) [ 1455.263966] CPU4: Package power limit normal [ 1455.263969] CPU2: Package power limit normal [ 1455.263972] CPU0: Package power limit normal [ 1455.263975] CPU6: Package power limit normal [ 1455.263998] CPU1: Package power limit normal [ 1455.264001] CPU5: Package power limit normal [ 1455.264004] CPU7: Package power limit normal [ 1455.264007] CPU3: Package power limit normal –  aceqott May 2 '12 at 12:39
    
Weird. I was hoping that there would be some trace of kernel log that said it had at least seen a device plugged in... I'm sorry I can't help you much here. –  harisibrahimkv May 2 '12 at 12:42
    
It's okay, thanks. –  aceqott May 2 '12 at 12:48

2 Answers 2

first format the USB in NTFS. just use fidisk-l to check wether if it is showing in the device list WITH NTFS file system. Remember the device name and mount the device using command sudo mount /dev/sda2 /mnt //assuming sda2 is NTFS formatted USB device.

edit: I recommend you to format the USB device as ntfs for it makes easy on a linux system to check the ntfs device and figure out what it is.

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I do not understand –  aceqott May 2 '12 at 12:50
    
idea behind it is simple. I just want to check if the usb is plugged in. If it does, then mounting it may solve the problem. Other wise you can check further for answer. Whats the output of sudo fdisk -l ? –  ashutosh May 2 '12 at 12:56
    
I do not recognize it: –  aceqott May 2 '12 at 12:59
    
Disco /dev/sda: 500.1 GB Unidades = sectores de 1 * 512 = 512 bytes Tamaño de sector (lógico / físico): 512 bytes / 512 bytes Tamaño E/S (mínimo/óptimo): 512 bytes / 512 bytes Identificador del disco: 0x00013fd6 Dispositivo Inicio Comienzo Fin Bloques Id Sistema /dev/sda1 * 2048 97656831 48827392 83 Linux /dev/sda2 968959998 976771071 3905537 5 Extendida /dev/sda3 97656832 968957951 435650560 83 Linux /dev/sda5 968960000 976771071 3905536 82 Linux swap / Solaris –  aceqott May 2 '12 at 12:59
    
have you formatted it with ntfs file system and still not getting any ntfs devices listed? I mean which file system your USB device is having? –  ashutosh May 2 '12 at 13:00

Does that particular USB port work when other devices are plugged in? It is possible that that USB hub on your machine isn't working under Ubuntu. It should always recognize that there is a device being plugged in -- do dmesg |grep /dev and see what the last device comes out to be.

As a test, plug a mouse into that USB port and see if it is working as expected (watch "dmesg | tail", CTRL+C to break out)

Another possibility is that, the device requires more power than the port can provide, but whatever the case, try another USB port on your machine and see if the behavior continues.

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I am Spanish and I can not understand what you say. Leave it, thank you very much for the help. –  aceqott May 2 '12 at 14:54
    
Usually, I got it, thanks to a MAC. I formated in NTFS using a MAC. Thank you very much everyone for your help really. A greeting very strong, close the issue. –  aceqott May 2 '12 at 15:24
    
Hi, I'm not sure I understand- are you talking about Mac OSX? You cannot format a device to NTFS format using a Mac that I was aware of. –  papashou May 3 '12 at 1:29
    
Well if you have the option of NTFS what happens next with a new name: Windows NT compression or something. –  aceqott May 5 '12 at 9:26
    
You can use Disk Utility to format USB flash drives. –  ThePiercingPrince Jun 28 '13 at 1:10

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