FDISK_P1
cl->cl_map[FDISK_P1 + count].dkl_cylno = UINT16_MAX;
cl->cl_map[FDISK_P1 + count].dkl_nblk =
cl->cl_offset[FDISK_P1 + count] =
cl->cl_map[FDISK_P1 + count].dkl_cylno = UINT32_MAX;
cl->cl_map[FDISK_P1 + count].dkl_nblk =
cl->cl_offset[FDISK_P1 + count] =