access to devices

This is a discussion on access to devices within the C++ Programming forums, part of the General Programming Boards category; hi, Im using device IO control to get access to the physical disks on my machine. So far i have ...

  1. #1
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    access to devices

    hi, Im using device IO control to get access to the physical disks on my machine. So far i have a program to access the first 3 physical disks, but when i come to access the 4th my program stops working?!!? I have 4 physical disks in my machine so i was wondering if it is a case of device io control only allowing access to 3 physical disks at a time? surely this cant be right as im closing the handles on each disk after im finished?

    Im sorry this is a bit of a random questions and i understand if no one has any idea what im talking about but in this case im not sure that posting my code will help any

    any opinions would be welcomed?

  2. #2
    and the hat of wrongness Salem's Avatar
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    Are they numbered 0 to 3 or 1 to 4?
    If it's the former, and you're trying to access number 4, then yes it will fail.

    Also "doesn't work" doesn't help!
    Go through your code and add verbose error checking and reporting of any and all error status returns, and then post relevant code and error messages.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
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