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Thread: Why you can't make a folder with name CON in you PC?

  1. #1

    Arrow Why you can't make a folder with name CON in you PC?

    Just try making a folder with that name.

    And you won't be able to make it normally !

    Anybody knows the reason behind it ?

    - Digital -

  2. #2
    Quote Originally Posted by Digital View Post
    Just try making a folder with that name.

    And you won't be able to make it normally !

    Anybody knows the reason behind it ?

    - Digital -
    They're reserved keywords. There are actually ways around it, but here's the reason:

    A device file is a reserved keyword used in MS-DOS and MS-DOS–based systems to allow access to certain ports and devices.

    MS-DOS uses device files for access to printers and ports. Most versions of windows also contain this support, which can cause confusion when trying to make files and folders of certain names, as they cannot have these names. A common misconception is that these are bugs which Microsoft has failed to fix.

    Device file system - Wikipedia, the free encyclopedia
    (

    Diet Fads

  3. #3
    Yeah, this is very old. Ancient Microsoft bug. Same with these:

    • PRN
    • AUX
    • NUL
    • LPT1
    • COM1
    • Potential drive letter - A: to Z:
    • A number of others

  4. #4
    Quote Originally Posted by m42 View Post
    They're reserved keywords. There are actually ways around it, but here's the reason:

    A device file is a reserved keyword used in MS-DOS and MS-DOS–based systems to allow access to certain ports and devices.

    MS-DOS uses device files for access to printers and ports. Most versions of windows also contain this support, which can cause confusion when trying to make files and folders of certain names, as they cannot have these names. A common misconception is that these are bugs which Microsoft has failed to fix.

    Device file system - Wikipedia, the free encyclopedia
    But I was able to make a folder with that name using DOS.

    - Digital -

  5. #5
    Quote Originally Posted by farooqaaa
    Yeah, this is very old. Ancient Microsoft bug. Same with these:

    • PRN
    • AUX
    • NUL
    • LPT1
    • COM1
    • Potential drive letter - A: to Z:
    • A number of others

    Pssst. It's not a bug.
    (

    Diet Fads

  6. #6
    Join Date
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    Quote Originally Posted by Digital View Post
    But I was able to make a folder with that name using DOS.

    - Digital -
    And you're not able to delete that from Windows, right !

  7. #7
    Join Date
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    Following method will work.

    G!

    We can create a folder named CON or LPT or COM by a simple way.
    Right click and do create folder process. While naming the folder, type 'CON' and type 255 in the numpad holding the alt button.
    EX 'CON' + (hold atl + '255').

    This process would create a folder named CON and a space with it. You cannot explictely give a space because windows cuts off the excess spaces before or after the name.

  8. #8
    FYI
    You can make different cool folder names by pressing alt+ any numbers..

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