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I currently have a USB pen that when inserted on the computer also emulates a CD rom. Even when I try to format it, the CD rom emulation is still there (and with a virus).

How can I completly format the USB pen?

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How are you formatting it now? –  Shinrai Oct 28 '10 at 18:35
    
Using windows format (fast format) –  devoured elysium Oct 28 '10 at 18:50
    
What is the brand and model of the USB pendrive? Several manufacturers do this, differently. –  ephemient Oct 28 '10 at 21:08

2 Answers 2

up vote 1 down vote accepted

Is this a U3 device? U3 devices have special hardware which allows them to emulate a CD-Rom device in a way that allows auto-run to execute properly. You can disable this with the U3 Launchpad Removal tool. Here is a detailed guide with pictures and step-by-step instructions, though if I remember correctly it was pretty straight forward.

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Have you tried the HP USB Disk Storage Format Tool? It's helped me out on a few occasions and works with non-HP devices.

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I'm actually on an HP. Trouble is that I am on Vista/7. –  devoured elysium Oct 28 '10 at 18:51
    
I've certainly installed and run the app on Windows 7 - give it a try. As for working with non-HP devices, I meant non-HP memory sticks. Good luck. –  Linker3000 Oct 28 '10 at 19:11

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