B_PARTITION
booted_partition = B_PARTITION(bootdev);
B_PARTITION(bootdev));
part = B_PARTITION(bootdev);
part = B_PARTITION(bootdev);
bpart = B_PARTITION(bootdev);
bpart = B_PARTITION(bootdev);
*p++ = 'a' + B_PARTITION(dev);
i = B_PARTITION(dp->bootdev);
booted_part = B_PARTITION(bootdev);
part = B_PARTITION(bootdev);