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Synopsis:
    #include <dos.h>
    void _dos_setdrive( unsigned drive, unsigned *total );

Description:
    The _dos_setdrive function uses system call 0x0E to set the current
    default disk drive to be the drive specified by drive, where 1 = drive
    A, 2 = drive B, etc.  The total number of disk drives is returned in the
    word pointed to by total.  For DOS versions 3.0 or later, the minimum
    number of drives returned is 5.

Returns:
    The _dos_setdrive function has no return value.  If an invalid drive
    number is specified, the function fails with no error indication.  You
    must use the  _dos_getdrive function to check that the desired drive has
    been set.

Example:
    #include <stdio.h>
    #include <dos.h>

    void main()
      {
        unsigned drive1, drive2, total;

        _dos_getdrive( &drive1 );
        printf( "Current drive is %c\n", 'A' + drive1 - 1 );
        /* try to change to drive C */
        _dos_setdrive( 3, &total );
        _dos_getdrive( &drive2 );
        printf( "Current drive is %c\n", 'A' + drive2 - 1 );
        /* go back to original drive */
        _dos_setdrive( drive1, &total );
        _dos_getdrive( &drive1 );
        printf( "Current drive is %c\n", 'A' + drive1 - 1 );
        printf( "Total number of drives is %u\n", total );
      }

    produces the following:

    Current drive is D
    Current drive is C
    Total number of drives is 6

Classification:
    DOS

Systems:
    DOS, Windows, Win386, Win32, OS/2 1.x(all), OS/2-32, DOS/PM

See Also:
    _dos_getdiskfree, _dos_getdrive, _getdiskfree, _getdrive