Formats a disk or magnetic tape volume and writes a label on the
    volume. At the end of initialization, the disk is empty except
    for the system files containing the structure information. All
    former contents of the volume are lost.

    Format

      SYS$INIT_VOL  devnam, volnam [,itmlst]

    C Prototype

      int sys$init_vol  (void *devnam, void *volnam, void *itmlst);