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FCB unavailable

Discussion in 'Earlier Versions of Windows' started by mwzak, Sep 13, 2004.

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  1. mwzak

    mwzak Thread Starter

    Sep 13, 2004
    Windows XP is giving an error FCB unavailable if DOS. How is this fixed?
  2. MFDnNC


    Sep 7, 2004
    Are you running an old program - a solution to this was adding an entry to config.nt


    But I cannot verify that this is the way to do it but it did solve one person problem.
  3. JohnWill

    JohnWill Retired Moderator

    Oct 19, 2002
    FCBS=64 would even be better. The error is the ancient MS-DOS 2.0 method of accessing files, before file handles. If you open more than 8 files with FCBS=8, the program will fail.

    BTW, another way this can happen is a poorly coded program that doesn't close the files, each time it consumes an FCB. With real MS-DOS 2.0, that error would be missed, since the O/S noticed you were opening the same file again and would re-use the FCP. I suspect the emulation under 2K/XP isn't so forgiving, and probably just used them up. :)
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