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Storing files on CD-R

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    Storing files on CD-R

    Maybe someone can help point me in the right direction.

    I maintain my applications in folders. If I transfer
    a folder to CD-R and transfer the contents to another
    computer, I get error messsage 'unknown file format' or
    the program just won't open. I changed the attributes
    from "read only" and still nothing.

    If I ZIP the folder onto a 3.5" floppy and install it on another pc everything works just fine

    If I zip the folder with the application onto a CD-R and
    copy it on another PC it gives the same error messages as
    copying the diretory directly on the CD

    I don't seem to have this type of problems with other files including document files. What gives??


    RE: Storing files on CD-R


    In my experience here a zip to CD-R will behave the same as a zip to Floppy. I suggest you test this using a database that, in zipped format, will fit on a single floppy. Verify that the database can be moved to another pc using either the floppy or the CD-R. If this works it will rule out mechanical problems with the CD-R device itself.

    If you're only having trouble with databases that are too large too fit on a single floppy, there are two likely culprits:

    1) if you're just copying the folder, instead of zipping it, all the files will be marked read only. When they're copied to the new pc you must uncheck the read only attribute on all of the files. Your message indicates you are aware of this. However, if you inadvertantly overlooked a file you would get the message you are seeing, so I'd double check.


    2) your application is not entirely self contained in a single folder. This impairs portability for reasons that have been discussed ad nauseum in lots of threads in this forum.

    -- tom


      RE: Storing files on CD-R


      I went through the entire process that I described once again. As far as the folder transfer I found one file
      that I missed changing the then worked

      I redid the Zip on CD-R and this time it worked like a
      champ. I still don't know what happened the first time, but what you said does work

      Thanks for your help and reassurance.