in reply to Find device letter

You can tell Windows not to pop up that window:

BEGIN {
    if ($^O =~ /\bMSWin32\b|\bcygwin\b/) {
        require Win32::API;
        Win32::API->import();
        Win32::API->Import('kernel32', 'SetErrorMode', 'I', 'I');

        my $errormode = SetErrorMode(1); # fetch old error mode
        SetErrorMode(1 | $errormode); # no AbortRetryFail messages any
+more
    };
};

# Now, Windows won't ask you to insert a drive into an empty device

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Re^2: Find device letter {Win32API::File::SetErrorMode()}
by tye (Sage) on Mar 21, 2014 at 05:05 UTC

    FYI, it is a bit easier to use the SetErrorMode() that is provided more directly via Win32API::File (a module that is even "core"). 

    use Win32API::File qw< SetErrorMode SEM_FAILCRITICALERRORS >;

SetErrorMode( SEM_FAILCRITICALERRORS() | SetErrorMode(0) );

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    - tye        

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