Write protecting USB drive

This is a discussion on Write protecting USB drive within the Tech Board forums, part of the Community Boards category; Recently when I used my usb drive on another computer the files on my usb drive got infected by worms. ...

  1. #1
    and the hat of copycat stevesmithx's Avatar
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    Write protecting USB drive

    Recently when I used my usb drive on another computer the files on my usb drive got infected by worms.
    Is there any way to make an usb drive inherently write-protected like floppy disks with any software so that worms won't be able to infect it.
    I searched for this but all solutions depend on tinkering with target computer(infected PC) registry. Utilities like thumbscrew also seem to give a similar solution.
    Is there some kind of utility which would make the usb drive write-protected at my PC and does not involve tinkering with target computer's registry.
    Does anyone know of any such utility or is it even possible to do this?
    I heard some usb drives have write-protection toggle like those in floppy disks but mine doesn't have this.
    Last edited by stevesmithx; 01-15-2009 at 08:19 AM.
    Not everything that can be counted counts, and not everything that counts can be counted
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  2. #2
    CSharpener vart's Avatar
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    probably easier will be to find a USB-drive with lock-slider preventing write access on the hardware level
    The first 90% of a project takes 90% of the time,
    the last 10% takes the other 90% of the time.

  3. #3
    and the hat of copycat stevesmithx's Avatar
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    Yeah but as i said earlier mine doen't have lock-slider to toggle write-protection.
    Not everything that can be counted counts, and not everything that counts can be counted
    - Albert Einstein.


    No programming language is perfect. There is not even a single best language; there are only languages well suited or perhaps poorly suited for particular purposes.
    - Herbert Mayer

  4. #4
    Malum in se abachler's Avatar
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    Without a switchm, any solution will be software based, which means tinkering with every computer that uses it, and of course the worms are free to ignore the software protection.

    So the answer is NO, buy one with a switch.
    Until you can build a working general purpose reprogrammable computer out of basic components from radio shack, you are not fit to call yourself a programmer in my presence. This is cwhizard, signing off.

  5. #5
    and the hat of copycat stevesmithx's Avatar
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    Without a switchm, any solution will be software based, which means tinkering with every computer that uses it, and of course the worms are free to ignore the software protection.

    So the answer is NO, buy one with a switch.
    Actually I searched and found certain unfamiliar for-a-fee software which claimed to do this perfectly. But I didn't want to end up buying some crap which is either fake or a virus itself!
    Anyway as you say the better solution would be to use a hardware lock,i guess.
    Not everything that can be counted counts, and not everything that counts can be counted
    - Albert Einstein.


    No programming language is perfect. There is not even a single best language; there are only languages well suited or perhaps poorly suited for particular purposes.
    - Herbert Mayer

  6. #6
    Kernel hacker
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    The only way you can actually achieve this without hardware support would be to use a (filter-)driver that declines writes to that particular device. It can certainly be done, but it's not entirely trivial.

    --
    Mats
    Compilers can produce warnings - make the compiler programmers happy: Use them!
    Please don't PM me for help - and no, I don't do help over instant messengers.

  7. #7
    and the hat of copycat stevesmithx's Avatar
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    Thanks Mats.
    Not everything that can be counted counts, and not everything that counts can be counted
    - Albert Einstein.


    No programming language is perfect. There is not even a single best language; there are only languages well suited or perhaps poorly suited for particular purposes.
    - Herbert Mayer

  8. #8
    Captain Crash brewbuck's Avatar
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    Damn USB thumb drives are like heroin needles. People pass them around like crazy. And because most people's systems are configured for autorun when a thumb drive is plugged in, viruses and other things can spread too easily.

    EVERY thumb drive should have a hardware write protect switch. I can't believe some don't.
    Code:
    //try
    //{
    	if (a) do { f( b); } while(1);
    	else   do { f(!b); } while(1);
    //}

  9. #9
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    IMHO autorun is inherently wrong. At least pop up a menu like Vista does (IIRC?). Plugging in a thumb drive = giving consent to executing arbitrary code is just wrong.

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