micropolis 1325 --sectors 16,0 --heads 8 --cylinders 1024 --header_crc 0xffff,0x1021,16,0 --data_crc 0xffffffff,0x140a0445,32,5 --format WD_1006 --sector_length 512 40 meg disk in the system used a 1323, 4 heads instead of 8