VTOC_SECTOR
ux->pdinfo.logical_sector + VTOC_SECTOR);
if (!sector_read(rwops, (void *)vtoc, start + VTOC_SECTOR))
err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc);
err = dk_read(pdinfo->logical_sector + VTOC_SECTOR, 1, vtoc);