Compatibility: 2.1+ 
 Purpose: Modifies the settings of a DOS-internal device driver to support
          non-standard diskette drives.

    Uses: ■ Force DOS to treat drive B as a 720K (3½-inch) disk drive.
          ■ Fix a problem in which DOS or an application does not notice
            that you have inserted a different diskette (especially pre-
            formatted and INSTALL diskettes).

  Syntax: DRIVPARM= /D:drvNo [/F:n] [/H:hds][/T:trks][/S:sects][/C][/I][/N]


 /D:drvNo is required. It is the physical drive number (0=A,1=B,2=C,etc.).

     /F:n specifies a "form factor"; that is, drive type (default=2):
           0 = 160/180K format (single-sided)
           0 = 320/360K format (double-sided)
           1 = 1.2M high-capacity drive
           2 = 720K (3½-inch) format
           5 = Hard disk
           6 = Tape
           7 = 1.44 MB (3½-inch) format
           8 = read/write optical disk
           9 = 2.88 MB (3½- inch) format

       /C indicates that the drive can detect when the door is closed.
       /I specifies to include internal support code to handle the drive.
          You need this if your ROM BIOS does not directly support 3½-inch
       /N specifies that drvNo is non-removable (fixed disk).

   /H:hds specifies the number of read/write heads.
  /T:trks specifies the number of tracks per side.
 /S:sects specifies the number of sectors per track.

          The defaults for /H, /T, and /S depend on the /F setting.

█▌TECH Notes▐█

  ■ This uses DOS fn 440dH 40H (generic IOCTL--set device parameters) to
    modify the BPB of the specified diskette driver.

See Also: CONFIG.SYS Commands
          Device Drivers