MAMBO_DISK_INFO
sc->maxblocks = mambocall(MAMBO_DISK_INFO,MAMBO_INFO_BLKSZ,d->d_unit)
d->d_mediasize = mambocall(MAMBO_DISK_INFO,MAMBO_INFO_DEVSZ,d->d_unit)
for (i = 0; mambocall(MAMBO_DISK_INFO,MAMBO_INFO_DEVSZ,i) > 0; i++)