85 	    o.offset = argtooff(optarg, "offset");  in main()
94 	    o.bootstrap = optarg;  in main()
97 	    o.create_size = argtooff(optarg, "create size");  in main()
100 	    if (strcmp(optarg, "12") &&  in main()
101 		strcmp(optarg, "16") &&  in main()
102 		strcmp(optarg, "32"))  in main()
103 		errx(1, "%s: bad FAT type", optarg);  in main()
104 	    o.fat_type = atoi(optarg);  in main()
107 	    o.volume_id = argto4(optarg, 0, "volume ID");  in main()
111 	    o.volume_label = optarg;  in main()
114 	    o.OEM_string = optarg;  in main()
117 	    o.bytes_per_sector = argto2(optarg, 1, "bytes/sector");  in main()
120 	    o.sectors_per_fat = argto4(optarg, 1, "sectors/FAT");  in main()
123 	    o.block_size = argtox(optarg, 1, "block size");  in main()
127 	    o.sectors_per_cluster = argto1(optarg, 1, "sectors/cluster");  in main()
131 	    o.directory_entries = argto2(optarg, 1, "directory entries");  in main()
134 	    o.floppy = optarg;  in main()
137 	    o.drive_heads = argto2(optarg, 1, "drive heads");  in main()
140 	    o.info_sector = argto2(optarg, 1, "info sector");  in main()
143 	    o.backup_sector = argto2(optarg, 1, "backup sector");  in main()
146 	    o.media_descriptor = argto1(optarg, 0, "media descriptor");  in main()
150 	    o.num_FAT = argto1(optarg, 1, "number of FATs");  in main()
153 	    o.hidden_sectors = argto4(optarg, 0, "hidden sectors");  in main()
157 	    o.reserved_sectors = argto2(optarg, 1, "reserved sectors");  in main()
160 	    o.size = argto4(optarg, 1, "file system size");  in main()
164 	    o.timestamp = get_tstamp(optarg);  in main()
167 	    o.sectors_per_track = argto2(optarg, 1, "sectors/track");  in main()