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I have a usb with a hidden cdfs partition that I want to purge, but when I plug it into my linux box, it doesn't register. fdisk -l only shows my hard drives, and the usb doesn't auto-mount. I pulled the USB out, plugged it in and ran dmesg to get the following lines:

[36952.162722] iwlwifi 0000:09:00.0: fail to flush all tx fifo queues
[36953.005657] usb 2-1.2: new high-speed USB device number 5 using ehci_hcd
[36953.090245] scsi89 : usb-storage 2-1.2:1.0
[36954.093760] scsi 89:0:0:0: Direct-Access     SanDisk  Cruzer Contour   4.13 PQ: 0 ANSI: 2
[36954.095570] scsi 89:0:0:1: CD-ROM            SanDisk  Cruzer Contour   4.13 PQ: 0 ANSI: 2
[36954.098583] sd 89:0:0:0: [sdb] Attached SCSI removable disk
[36954.103342] sr1: scsi3-mmc drive: 8x/40x writer xa/form2 cdda tray
[36954.103950] sr 89:0:0:1: Attached scsi CD-ROM sr1
[36954.168330] iwlwifi 0000:09:00.0: fail to flush all tx fifo queues
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Did you mount it Manually? – Sepahrad Salour Apr 20 '13 at 11:01
Nope. All I did was plug it in. – Davidos Apr 20 '13 at 12:03
try this commands: 1. mkdir directory 2. mount /dev/sdb ~/directory Feed back the error – Sepahrad Salour Apr 20 '13 at 12:06
When the USB isn't plugged in, I get: mount: special device /dev/sdb does not exist When it is plugged in, I get: mount: no medium found on /dev/sdb – Davidos Apr 20 '13 at 12:59
First you must plug your USB after. sorry try 1. mount /dev/sdb1 ~/directory ... I forgot to write 1 . test it and feed back here – Sepahrad Salour Apr 20 '13 at 13:04

From your dmesg output, the USB stick is seen as a read-only device.

Please, see USB memory stick presents as two storage devices.

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