NBLOCKS
nblocks = NBLOCKS(efi_label->efi_nparts, efi_label->efi_lbasize);
if (NBLOCKS(vtoc->efi_nparts, vtoc->efi_lbasize) < 34) {
dk_ioc.dki_length = NBLOCKS(vtoc->efi_nparts,
nblocks = NBLOCKS(nparts, lbsize);
if (NBLOCKS(vtoc->efi_nparts, disk_info.dki_lbsize) < 34) {