VINUMHEADERLEN
vhdr = (struct vinum_hdr *) Malloc(VINUMHEADERLEN); /* allocate buffer */
error = read_drive(drive, (void *) vhdr, VINUMHEADERLEN, VINUM_LABEL_OFFSET);
write_drive(drive, (void *) vhdr, VINUMHEADERLEN, VINUM_LABEL_OFFSET);
vhdr = (struct vinum_hdr *) Malloc(VINUMHEADERLEN); /* allocate buffers */
error = read_drive(drive, (void *) vhdr, VINUMHEADERLEN, VINUM_LABEL_OFFSET);
vhdr = (struct vinum_hdr *) Malloc(VINUMHEADERLEN); /* get space for the config data */
error = write_drive(drive, (char *) vhdr, VINUMHEADERLEN, VINUM_LABEL_OFFSET);