Feel like I'm close to success 5.25" floppies circa 1983 ;)

[jfrazier00]

Hey there,

Got the GreaseWeazle all set up (Mac command line) and have tried a bunch of settings on 2 different drives (TEAC-505 and TEAC55) with same results. I read as raw without many args and it looks good to start. I searched a lot of places and here and have yet to find the clue I am lacking.

Reading c=0-81:h=0-1 revs=3
T0.0: Raw Flux (140592 flux in 587.60ms)
T0.1: Raw Flux (153607 flux in 661.35ms)
T1.0: Raw Flux (160651 flux in 640.13ms)
T1.1: Raw Flux (172578 flux in 630.61ms)
T2.0: Raw Flux (143759 flux in 601.18ms)
T2.1: Raw Flux (113182 flux in 503.28ms)
T3.0: Raw Flux (158711 flux in 642.77ms)
T3.1: Raw Flux (139199 flux in 520.01ms)
T4.0: Raw Flux (142467 flux in 625.99ms)
T4.1: Raw Flux (118941 flux in 528.13ms)
T5.0: Raw Flux (123728 flux in 511.94ms)
T5.1: Raw Flux (174221 flux in 653.32ms)
T6.0: Raw Flux (132700 flux in 588.26ms)
T6.1: Raw Flux (146801 flux in 645.97ms)
T7.0: Raw Flux (168898 flux in 647.50ms)
T7.1: Raw Flux (134621 flux in 514.24ms)
T8.0: Raw Flux (149290 flux in 659.04ms)
T8.1: Raw Flux (121961 flux in 534.78ms)
T9.0: Raw Flux (138957 flux in 500.53ms)
T9.1: Raw Flux (178618 flux in 664.38ms)
T10.0: Raw Flux (148910 flux in 653.06ms)
T10.1: Raw Flux (116526 flux in 513.42ms)
T11.0: Raw Flux (139984 flux in 505.70ms)
T11.1: Raw Flux (177643 flux in 663.40ms)
T12.0: Raw Flux (132297 flux in 583.73ms)
T12.1: Raw Flux (145113 flux in 645.04ms)
T13.0: Raw Flux (188179 flux in 663.54ms)
T13.1: Raw Flux (156511 flux in 590.29ms)
T14.0: Raw Flux (146360 flux in 647.29ms)
T14.1: Raw Flux (153602 flux in 651.98ms)
T15.0: Raw Flux (191591 flux in 643.22ms)
T15.1: Raw Flux (175202 flux in 641.60ms)
T16.0: Raw Flux (160861 flux in 644.37ms)
T16.1: Raw Flux (126143 flux in 523.74ms)
T17.0: Raw Flux (196103 flux in 638.67ms)
T17.1: Raw Flux (180164 flux in 635.71ms)
T18.0: Raw Flux (150408 flux in 625.41ms)
T18.1: Raw Flux (133123 flux in 551.71ms)
T19.0: Raw Flux (191114 flux in 623.84ms)
T19.1: Raw Flux (158747 flux in 551.09ms)
T20.0: Raw Flux (150709 flux in 624.91ms)
T20.1: Raw Flux (158554 flux in 656.77ms)
T21.0: Raw Flux (198630 flux in 650.53ms)
T21.1: Raw Flux (178638 flux in 641.73ms)
T22.0: Raw Flux (150621 flux in 610.09ms)
T22.1: Raw Flux (118328 flux in 505.75ms)
T23.0: Raw Flux (201649 flux in 646.87ms)
T23.1: Raw Flux (163283 flux in 574.63ms)
T24.0: Raw Flux (132778 flux in 590.50ms)
T24.1: Raw Flux (120516 flux in 532.33ms)
T25.0: Raw Flux (194581 flux in 665.63ms)
T25.1: Raw Flux (173354 flux in 621.03ms)
T26.0: Raw Flux (143689 flux in 639.74ms)
T26.1: Raw Flux (115396 flux in 510.58ms)
T27.0: Raw Flux (171300 flux in 602.89ms)
T27.1: Raw Flux (172151 flux in 633.99ms)
T28.0: Raw Flux (147005 flux in 651.12ms)
T28.1: Raw Flux (117232 flux in 519.52ms)
T29.0: Raw Flux (193469 flux in 659.03ms)
T29.1: Raw Flux (176596 flux in 635.35ms)
T30.0: Raw Flux (114809 flux in 508.05ms)
T30.1: Raw Flux (123499 flux in 506.30ms)
T31.0: Raw Flux (193614 flux in 644.80ms)
T31.1: Raw Flux (186791 flux in 654.24ms)
T32.0: Raw Flux (145445 flux in 609.79ms)
T32.1: Raw Flux (122670 flux in 512.36ms)
T33.0: Raw Flux (150618 flux in 500.83ms)
T33.1: Raw Flux (186245 flux in 646.19ms)
T34.0: Raw Flux (135199 flux in 564.06ms)
T34.1: Raw Flux (156110 flux in 650.74ms)
T35.0: Raw Flux (194034 flux in 660.89ms)
T35.1: Raw Flux (187519 flux in 639.97ms)
T36.0: Raw Flux (146863 flux in 630.10ms)
T36.1: Raw Flux (125695 flux in 534.51ms)
T37.0: Raw Flux (164638 flux in 589.58ms)
T37.1: Raw Flux (182277 flux in 625.16ms)
T38.0: Raw Flux (146651 flux in 623.43ms)
T38.1: Raw Flux (155926 flux in 604.09ms)
T39.0: Raw Flux (206892 flux in 664.81ms)
T39.1: Raw Flux (196506 flux in 641.81ms)
T40.0: Raw Flux (164670 flux in 622.84ms)
T40.1: Raw Flux (174477 flux in 654.74ms)
T41.0: Raw Flux (177560 flux in 571.01ms)
T41.1: Raw Flux (192723 flux in 633.89ms)
T42.0: Raw Flux (162200 flux in 621.46ms)
T42.1: Raw Flux (163181 flux in 621.27ms)
T43.0: Raw Flux (204126 flux in 662.04ms)
T43.1: Raw Flux (202901 flux in 651.97ms)
T44.0: Raw Flux (143779 flux in 557.98ms)
T44.1: Raw Flux (175641 flux in 660.40ms)
T45.0: Raw Flux (196706 flux in 639.42ms)
T45.1: Raw Flux (207071 flux in 633.16ms)
T46.0: Raw Flux (163474 flux in 612.02ms)
T46.1: Raw Flux (138031 flux in 515.10ms)
T47.0: Raw Flux (185314 flux in 587.25ms)
T47.1: Raw Flux (185608 flux in 563.63ms)
T48.0: Raw Flux (158722 flux in 592.71ms)
T48.1: Raw Flux (133908 flux in 509.06ms)
T49.0: Raw Flux (207424 flux in 649.59ms)
T49.1: Raw Flux (203487 flux in 627.18ms)
T50.0: Raw Flux (159743 flux in 600.39ms)
T50.1: Raw Flux (160100 flux in 638.00ms)
T51.0: Raw Flux (213192 flux in 665.63ms)
T51.1: Raw Flux (199064 flux in 615.11ms)
T52.0: Raw Flux (155404 flux in 622.95ms)
T52.1: Raw Flux (130353 flux in 511.82ms)
T53.0: Raw Flux (158087 flux in 504.84ms)
T53.1: Raw Flux (208937 flux in 660.79ms)
T54.0: Raw Flux (157517 flux in 617.26ms)
T54.1: Raw Flux (126698 flux in 525.13ms)
T55.0: Raw Flux (155189 flux in 502.86ms)
T55.1: Raw Flux (215568 flux in 664.05ms)
T56.0: Raw Flux (150710 flux in 621.97ms)
T56.1: Raw Flux (126026 flux in 525.85ms)
T57.0: Raw Flux (152771 flux in 508.56ms)
T57.1: Raw Flux (205176 flux in 637.09ms)
T58.0: Raw Flux (149700 flux in 622.02ms)
T58.1: Raw Flux (126912 flux in 526.42ms)
T59.0: Raw Flux (206326 flux in 659.60ms)
T59.1: Raw Flux (202421 flux in 634.77ms)
T60.0: Raw Flux (145079 flux in 608.58ms)
T60.1: Raw Flux (121664 flux in 533.31ms)
T61.0: Raw Flux (199371 flux in 643.07ms)
T61.1: Raw Flux (198541 flux in 634.84ms)
T62.0: Raw Flux (140725 flux in 618.42ms)
T62.1: Raw Flux (120657 flux in 528.73ms)
T63.0: Raw Flux (208762 flux in 651.45ms)
T63.1: Raw Flux (197188 flux in 638.31ms)
T64.0: Raw Flux (140654 flux in 615.98ms)
T64.1: Raw Flux (137681 flux in 603.15ms)
T65.0: Raw Flux (152163 flux in 507.89ms)
T65.1: Raw Flux (217188 flux in 663.19ms)
T66.0: Raw Flux (139838 flux in 612.45ms)
T66.1: Raw Flux (123179 flux in 539.76ms)
T67.0: Raw Flux (219652 flux in 664.49ms)
T67.1: Raw Flux (212341 flux in 661.74ms)
T68.0: Raw Flux (132006 flux in 578.38ms)
T68.1: Raw Flux (116248 flux in 509.20ms)
T69.0: Raw Flux (165185 flux in 515.92ms)
T69.1: Raw Flux (208590 flux in 651.17ms)
T70.0: Raw Flux (140564 flux in 615.83ms)
T70.1: Raw Flux (122360 flux in 536.40ms)
T71.0: Raw Flux (203137 flux in 664.15ms)
T71.1: Raw Flux (173684 flux in 560.17ms)
T72.0: Raw Flux (142071 flux in 622.51ms)
T72.1: Raw Flux (118245 flux in 518.17ms)
T73.0: Raw Flux (195674 flux in 652.69ms)
T73.1: Raw Flux (207818 flux in 660.34ms)
T74.0: Raw Flux (142954 flux in 626.27ms)
T74.1: Raw Flux (151883 flux in 665.25ms)
T75.0: Raw Flux (173183 flux in 654.44ms)
T75.1: Raw Flux (206496 flux in 663.19ms)
T76.0: Raw Flux (144385 flux in 632.35ms)
T76.1: Raw Flux (117589 flux in 515.13ms)
T77.0: Raw Flux (197812 flux in 653.75ms)
T77.1: Raw Flux (212876 flux in 665.14ms)
T78.0: Raw Flux (130178 flux in 570.34ms)
T78.1: Raw Flux (122611 flux in 537.35ms)
T79.0: Raw Flux (147646 flux in 512.45ms)
T79.1: Raw Flux (162633 flux in 503.85ms)
T80.0: Raw Flux (230327 flux in 635.31ms)
T80.1: Raw Flux (209439 flux in 605.81ms)
T81.0: Raw Flux (222376 flux in 614.12ms)
T81.1: Raw Flux (203206 flux in 586.00ms)

Then I do the convert to create an image file and these are the only settings that have gotten me this close to 88% consistently with all disks I've tried. My understanding is the summary should be all periods and 100%, correct?

Converting c=0-79:h=0-1:step=2 -> c=0-79:h=0-1
Format ibm.360
T0.0: IBM MFM (8/9 sectors) from Raw Flux (119963 flux in 499.89ms)
T0.1: IBM MFM (8/9 sectors) from Raw Flux (117912 flux in 499.65ms)
T1.0 <- Image 2.0: IBM MFM (8/9 sectors) from Raw Flux (119519 flux in 499.67ms)
T1.1 <- Image 2.1: IBM MFM (8/9 sectors) from Raw Flux (119473 flux in 499.70ms)
T2.0 <- Image 4.0: IBM MFM (8/9 sectors) from Raw Flux (119520 flux in 499.70ms)
T2.1 <- Image 4.1: IBM MFM (8/9 sectors) from Raw Flux (119393 flux in 499.69ms)
T3.0 <- Image 6.0: IBM MFM (8/9 sectors) from Raw Flux (119503 flux in 499.69ms)
T3.1 <- Image 6.1: IBM MFM (8/9 sectors) from Raw Flux (119514 flux in 499.69ms)
T4.0 <- Image 8.0: IBM MFM (8/9 sectors) from Raw Flux (119449 flux in 499.68ms)
T4.1 <- Image 8.1: IBM MFM (8/9 sectors) from Raw Flux (119694 flux in 499.65ms)
T5.0 <- Image 10.0: IBM MFM (8/9 sectors) from Raw Flux (119389 flux in 499.71ms)
T5.1 <- Image 10.1: IBM MFM (8/9 sectors) from Raw Flux (118602 flux in 499.63ms)
T6.0 <- Image 12.0: IBM MFM (8/9 sectors) from Raw Flux (118129 flux in 499.64ms)
T6.1 <- Image 12.1: IBM MFM (8/9 sectors) from Raw Flux (118595 flux in 499.64ms)
T7.0 <- Image 14.0: IBM MFM (8/9 sectors) from Raw Flux (117834 flux in 499.63ms)
T7.1 <- Image 14.1: IBM MFM (8/9 sectors) from Raw Flux (118410 flux in 499.61ms)
T8.0 <- Image 16.0: IBM MFM (8/9 sectors) from Raw Flux (118104 flux in 499.63ms)
T8.1 <- Image 16.1: IBM MFM (8/9 sectors) from Raw Flux (118452 flux in 499.63ms)
T9.0 <- Image 18.0: IBM MFM (8/9 sectors) from Raw Flux (118525 flux in 499.60ms)
T9.1 <- Image 18.1: IBM MFM (8/9 sectors) from Raw Flux (118398 flux in 499.60ms)
T10.0 <- Image 20.0: IBM MFM (8/9 sectors) from Raw Flux (119472 flux in 499.60ms)
T10.1 <- Image 20.1: IBM MFM (8/9 sectors) from Raw Flux (119148 flux in 499.59ms)
T11.0 <- Image 22.0: IBM MFM (8/9 sectors) from Raw Flux (118854 flux in 499.62ms)
T11.1 <- Image 22.1: IBM MFM (8/9 sectors) from Raw Flux (118687 flux in 499.61ms)
T12.0 <- Image 24.0: IBM MFM (8/9 sectors) from Raw Flux (118836 flux in 499.60ms)
T12.1 <- Image 24.1: IBM MFM (8/9 sectors) from Raw Flux (119023 flux in 499.58ms)
T13.0 <- Image 26.0: IBM MFM (8/9 sectors) from Raw Flux (118975 flux in 499.59ms)
T13.1 <- Image 26.1: IBM MFM (8/9 sectors) from Raw Flux (119173 flux in 499.59ms)
T14.0 <- Image 28.0: IBM MFM (8/9 sectors) from Raw Flux (118950 flux in 499.58ms)
T14.1 <- Image 28.1: IBM MFM (8/9 sectors) from Raw Flux (118003 flux in 499.57ms)
T15.0 <- Image 30.0: IBM MFM (8/9 sectors) from Raw Flux (114534 flux in 499.55ms)
T15.1 <- Image 30.1: IBM MFM (8/9 sectors) from Raw Flux (115232 flux in 499.57ms)
T16.0 <- Image 32.0: IBM MFM (8/9 sectors) from Raw Flux (115224 flux in 499.60ms)
T16.1 <- Image 32.1: IBM MFM (8/9 sectors) from Raw Flux (114576 flux in 499.61ms)
T17.0 <- Image 34.0: IBM MFM (8/9 sectors) from Raw Flux (117000 flux in 499.56ms)
T17.1 <- Image 34.1: IBM MFM (8/9 sectors) from Raw Flux (118824 flux in 499.59ms)
T18.0 <- Image 36.0: IBM MFM (8/9 sectors) from Raw Flux (118764 flux in 499.58ms)
T18.1 <- Image 36.1: IBM MFM (8/9 sectors) from Raw Flux (118873 flux in 499.59ms)
T19.0 <- Image 38.0: IBM MFM (8/9 sectors) from Raw Flux (119028 flux in 499.55ms)
T19.1 <- Image 38.1: IBM MFM (8/9 sectors) from Raw Flux (118860 flux in 499.57ms)
T20.0 <- Image 40.0: IBM MFM (8/9 sectors) from Raw Flux (119101 flux in 499.59ms)
T20.1 <- Image 40.1: IBM MFM (8/9 sectors) from Raw Flux (118147 flux in 499.58ms)
T21.0 <- Image 42.0: IBM MFM (8/9 sectors) from Raw Flux (117534 flux in 499.56ms)
T21.1 <- Image 42.1: IBM MFM (8/9 sectors) from Raw Flux (119268 flux in 499.57ms)
T22.0 <- Image 44.0: IBM MFM (8/9 sectors) from Raw Flux (119328 flux in 499.60ms)
T22.1 <- Image 44.1: IBM MFM (8/9 sectors) from Raw Flux (119316 flux in 499.55ms)
T23.0 <- Image 46.0: IBM MFM (8/9 sectors) from Raw Flux (118939 flux in 499.57ms)
T23.1 <- Image 46.1: IBM MFM (8/9 sectors) from Raw Flux (118154 flux in 499.59ms)
T24.0 <- Image 48.0: IBM MFM (8/9 sectors) from Raw Flux (118236 flux in 499.55ms)
T24.1 <- Image 48.1: IBM MFM (8/9 sectors) from Raw Flux (119136 flux in 499.55ms)
T25.0 <- Image 50.0: IBM MFM (8/9 sectors) from Raw Flux (119322 flux in 499.56ms)
T25.1 <- Image 50.1: IBM MFM (8/9 sectors) from Raw Flux (119233 flux in 499.58ms)
T26.0 <- Image 52.0: IBM MFM (8/9 sectors) from Raw Flux (119035 flux in 499.59ms)
T26.1 <- Image 52.1: IBM MFM (8/9 sectors) from Raw Flux (118230 flux in 499.57ms)
T27.0 <- Image 54.0: IBM MFM (8/9 sectors) from Raw Flux (118135 flux in 499.56ms)
T27.1 <- Image 54.1: IBM MFM (8/9 sectors) from Raw Flux (119065 flux in 499.60ms)
T28.0 <- Image 56.0: IBM MFM (8/9 sectors) from Raw Flux (119333 flux in 499.57ms)
T28.1 <- Image 56.1: IBM MFM (8/9 sectors) from Raw Flux (119364 flux in 499.54ms)
T29.0 <- Image 58.0: IBM MFM (8/9 sectors) from Raw Flux (119131 flux in 499.55ms)
T29.1 <- Image 58.1: IBM MFM (8/9 sectors) from Raw Flux (118399 flux in 499.56ms)
T30.0 <- Image 60.0: IBM MFM (8/9 sectors) from Raw Flux (118104 flux in 499.56ms)
T30.1 <- Image 60.1: IBM MFM (8/9 sectors) from Raw Flux (119095 flux in 499.55ms)
T31.0 <- Image 62.0: IBM MFM (8/9 sectors) from Raw Flux (119160 flux in 499.56ms)
T31.1 <- Image 62.1: IBM MFM (8/9 sectors) from Raw Flux (119112 flux in 499.58ms)
T32.0 <- Image 64.0: IBM MFM (8/9 sectors) from Raw Flux (118938 flux in 499.55ms)
T32.1 <- Image 64.1: IBM MFM (8/9 sectors) from Raw Flux (117901 flux in 499.58ms)
T33.0 <- Image 66.0: IBM MFM (8/9 sectors) from Raw Flux (117749 flux in 499.55ms)
T33.1 <- Image 66.1: IBM MFM (8/9 sectors) from Raw Flux (115579 flux in 499.56ms)
T34.0 <- Image 68.0: IBM MFM (8/9 sectors) from Raw Flux (116177 flux in 499.54ms)
T34.1 <- Image 68.1: IBM MFM (8/9 sectors) from Raw Flux (115115 flux in 499.56ms)
T35.0 <- Image 70.0: IBM MFM (8/9 sectors) from Raw Flux (115686 flux in 499.55ms)
T35.1 <- Image 70.1: IBM MFM (8/9 sectors) from Raw Flux (116040 flux in 499.57ms)
T36.0 <- Image 72.0: IBM MFM (8/9 sectors) from Raw Flux (116136 flux in 499.57ms)
T36.1 <- Image 72.1: IBM MFM (8/9 sectors) from Raw Flux (115506 flux in 499.57ms)
T37.0 <- Image 74.0: IBM MFM (8/9 sectors) from Raw Flux (117276 flux in 499.55ms)
T37.1 <- Image 74.1: IBM MFM (8/9 sectors) from Raw Flux (116725 flux in 499.56ms)
T38.0 <- Image 76.0: IBM MFM (8/9 sectors) from Raw Flux (117293 flux in 499.54ms)
T38.1 <- Image 76.1: IBM MFM (8/9 sectors) from Raw Flux (115327 flux in 499.55ms)
T39.0 <- Image 78.0: IBM MFM (8/9 sectors) from Raw Flux (114996 flux in 499.56ms)
T39.1 <- Image 78.1: IBM MFM (8/9 sectors) from Raw Flux (114584 flux in 499.59ms)
T40.0 <- Image 80.0: WARNING: Out of range for format 'ibm.360': Track skipped
T40.1 <- Image 80.1: WARNING: Out of range for format 'ibm.360': Track skipped
Cyl-> 0         1         2         3         4         5         6         7         
H. S: 01234567890123456789012345678901234567890123456789012345678901234567890123456789
0. 0: ........................................                                        
0. 1: ........................................                                        
0. 2: ........................................                                        
0. 3: ........................................                                        
0. 4: ........................................                                        
0. 5: ........................................                                        
0. 6: ........................................                                        
0. 7: ........................................                                        
0. 8: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 0: ........................................                                        
1. 1: ........................................                                        
1. 2: ........................................                                        
1. 3: ........................................                                        
1. 4: ........................................                                        
1. 5: ........................................                                        
1. 6: ........................................                                        
1. 7: ........................................                                        
1. 8: XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
Found 640 sectors of 720 (88%)

I open up the image in HxCFloppy Emulator and it feels "close".

I see a lot of valid data in the hex dump from xxd except for a few chunks that look like this:

00001010: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001020: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001030: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001040: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001050: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001060: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001070: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001080: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001090: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000010a0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000010b0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000010c0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000010d0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000010e0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000010f0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001100: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001110: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001120: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001130: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001140: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001150: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001160: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001170: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001180: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
00001190: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000011a0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000011b0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000011c0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000011d0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000011e0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-
000011f0: 2d3d 5b42 4144 2053 4543 544f 525d 3d2d  -=[BAD SECTOR]=-

Any idea what I am missing?

[jim02762]

Is there really a problem? Early IBM PC formats were 8 sectors per track. That was later increased to 9.

[jfrazier00]

Understood. My hesitation is from a couple things.

1. Understanding the rows of X's. The more I look at it those are unrecognized tracks beyond 79 so that should be ok if I read that right.
2. The -=BAD SECTOR=- blocks of strings stuffed into the converted data make me feel like something went wrong. Is this a false positive or should I interpret literally that the data is bad? I get the exact same behavior on every disk and on 2 drives so it's repeatable behavior.
3. Most of my disks are almost all old source code and data. There aren't any exes to run and it's hard to tell from a hex dump that the files are in tact if that makes sense at all.

[jim02762]

1. No. The two rows of X's are telling you that sector number 8 (the 9th sector) is unreadable on tracks 0 through 39 (your disks are 40 tracks), inclusive, on both sides. Also note that it is telling you "8/9 sectors" are read for each track converted.

2. If you try reading a 9th sector on a disk formatted with only 8 sectors per track then that would be a -=BAD SECTOR=-, because it can't find it.

3. The sectors all have CRCs. Everything looks good. You're just missing the 9th sector on every disk because it was never there.

Use the format ibm.320 instead of ibm.360 for your conversion.

[jfrazier00]

Thanks a bunch for the info. I tried ibm.320 and it didn't like it.

Cyl-> 0         1         2         3         4         5         6         7         
H. S: 01234567890123456789012345678901234567890123456789012345678901234567890123456789
0. 0: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 1: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 2: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 3: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 4: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 5: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 6: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
0. 7: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 0: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 1: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 2: ..XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 3: ..XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 4: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 5: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 6: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
1. 7: .XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX                                        
Found 18 sectors of 640 (2%)

[keirf]

Loading the IMG file into HxC doesn't tell you much; I don't think HxC has even worked out the geometry correctly.

What you want to do is load the raw dump into HxC and view that. Then we can see how many sectors per track, the sector IDs, interleave and so on. Can you share/upload a raw dump here?

Another thing to try is gw convert with format ibm.scan.

[jfrazier00]

Thanks @keirf I gave `ibm.scan' a shot. Had some interesting messages along the way but the results look much better. Interestingly, the .img file won't load into HxC and gives "Load error! Read file error!"

Converting c=0-79:h=0-1 -> c=0-79:h=0-1
Format ibm.scan
T0.0: IBM MFM (8/8 sectors) from Raw Flux (119963 flux in 499.89ms)
T0.1: IBM MFM (8/8 sectors) from Raw Flux (117912 flux in 499.65ms)
T1.0: IBM Empty from Raw Flux (143741 flux in 499.68ms)
T1.1: IBM MFM (2/4 sectors) from Raw Flux (131685 flux in 499.70ms)
T2.0: IBM MFM (8/8 sectors) from Raw Flux (119519 flux in 499.67ms)
T2.1: IBM MFM (8/8 sectors) from Raw Flux (119473 flux in 499.70ms)
T3.0: IBM Empty from Raw Flux (154196 flux in 499.69ms)
T3.1: IBM MFM (1/3 sectors) from Raw Flux (136138 flux in 499.69ms)
T4.0: IBM MFM (8/8 sectors) from Raw Flux (119520 flux in 499.70ms)
T4.1: IBM MFM (8/8 sectors) from Raw Flux (119393 flux in 499.69ms)
T5.0: IBM Empty from Raw Flux (164366 flux in 499.67ms)
T5.1: IBM Empty from Raw Flux (145922 flux in 499.68ms)
T6.0: IBM MFM (8/8 sectors) from Raw Flux (119503 flux in 499.69ms)
T6.1: IBM MFM (8/8 sectors) from Raw Flux (119514 flux in 499.69ms)
T7.0: IBM Empty from Raw Flux (157778 flux in 499.66ms)
T7.1: IBM MFM (1/4 sectors) from Raw Flux (130638 flux in 499.67ms)
T8.0: IBM MFM (8/8 sectors) from Raw Flux (119449 flux in 499.68ms)
T8.1: IBM MFM (8/8 sectors) from Raw Flux (119694 flux in 499.65ms)
T9.0: IBM Empty from Raw Flux (155713 flux in 499.65ms)
T9.1: IBM MFM (2/4 sectors) from Raw Flux (134227 flux in 499.67ms)
T10.0: IBM MFM (8/8 sectors) from Raw Flux (119389 flux in 499.71ms)
T10.1: IBM MFM (8/8 sectors) from Raw Flux (118602 flux in 499.63ms)
T11.0: IBM Empty from Raw Flux (156406 flux in 499.64ms)
Unknown mark fc
Unknown mark fc
T11.1: IBM Empty from Raw Flux (139938 flux in 499.63ms)
T12.0: IBM MFM (8/8 sectors) from Raw Flux (118129 flux in 499.64ms)
T12.1: IBM MFM (8/8 sectors) from Raw Flux (118595 flux in 499.64ms)
Unknown mark fc
T13.0: IBM Empty from Raw Flux (164117 flux in 499.65ms)
T13.1: IBM Empty from Raw Flux (145550 flux in 499.64ms)
T14.0: IBM MFM (8/8 sectors) from Raw Flux (117834 flux in 499.63ms)
T14.1: IBM MFM (8/8 sectors) from Raw Flux (118410 flux in 499.61ms)
T15.0: IBM Empty from Raw Flux (162684 flux in 499.63ms)
Unknown mark 01
Unknown mark 01
Unknown mark 01
Unknown mark 01
T15.1: IBM Empty from Raw Flux (141311 flux in 499.65ms)
T16.0: IBM MFM (8/8 sectors) from Raw Flux (118104 flux in 499.63ms)
T16.1: IBM MFM (8/8 sectors) from Raw Flux (118452 flux in 499.63ms)
T17.0: IBM Empty from Raw Flux (165677 flux in 499.60ms)
Unknown mark fa
Unknown mark fa
T17.1: IBM Empty from Raw Flux (146717 flux in 499.61ms)
T18.0: IBM MFM (8/8 sectors) from Raw Flux (118525 flux in 499.60ms)
T18.1: IBM MFM (8/8 sectors) from Raw Flux (118398 flux in 499.60ms)
T19.0: IBM Empty from Raw Flux (167572 flux in 499.60ms)
T19.1: IBM Empty from Raw Flux (147693 flux in 499.61ms)
T20.0: IBM MFM (8/8 sectors) from Raw Flux (119472 flux in 499.60ms)
T20.1: IBM MFM (8/8 sectors) from Raw Flux (119148 flux in 499.59ms)
T21.0: IBM Empty from Raw Flux (167679 flux in 499.58ms)
T21.1: IBM Empty from Raw Flux (151125 flux in 499.61ms)
T22.0: IBM MFM (8/8 sectors) from Raw Flux (118854 flux in 499.62ms)
T22.1: IBM MFM (8/8 sectors) from Raw Flux (118687 flux in 499.61ms)
T23.0: IBM Empty from Raw Flux (166254 flux in 499.58ms)
Unknown mark ee
Unknown mark ee
T23.1: IBM Empty from Raw Flux (151202 flux in 499.58ms)
T24.0: IBM MFM (8/8 sectors) from Raw Flux (118836 flux in 499.60ms)
T24.1: IBM MFM (8/8 sectors) from Raw Flux (119023 flux in 499.58ms)
T25.0: IBM Empty from Raw Flux (169121 flux in 499.58ms)
T25.1: IBM Empty from Raw Flux (154309 flux in 499.60ms)
T26.0: IBM MFM (8/8 sectors) from Raw Flux (118975 flux in 499.59ms)
T26.1: IBM MFM (8/8 sectors) from Raw Flux (119173 flux in 499.59ms)
T27.0: IBM Empty from Raw Flux (171905 flux in 499.57ms)
T27.1: IBM Empty from Raw Flux (165095 flux in 499.57ms)
T28.0: IBM MFM (8/8 sectors) from Raw Flux (118950 flux in 499.58ms)
T28.1: IBM MFM (8/8 sectors) from Raw Flux (118003 flux in 499.57ms)
T29.0: IBM Empty from Raw Flux (171370 flux in 499.59ms)
Unknown mark ff
Unknown mark ff
T29.1: IBM Empty from Raw Flux (156991 flux in 499.57ms)
T30.0: IBM MFM (8/8 sectors) from Raw Flux (114534 flux in 499.55ms)
T30.1: IBM MFM (8/8 sectors) from Raw Flux (115232 flux in 499.57ms)
T31.0: IBM Empty from Raw Flux (170511 flux in 499.57ms)
T31.1: IBM Empty from Raw Flux (154964 flux in 499.59ms)
T32.0: IBM MFM (8/8 sectors) from Raw Flux (115224 flux in 499.60ms)
T32.1: IBM MFM (8/8 sectors) from Raw Flux (114576 flux in 499.61ms)
Unknown mark fc
T33.0: IBM Empty from Raw Flux (172882 flux in 499.56ms)
T33.1: IBM Empty from Raw Flux (158279 flux in 499.58ms)
T34.0: IBM MFM (8/8 sectors) from Raw Flux (117000 flux in 499.56ms)
T34.1: IBM MFM (8/8 sectors) from Raw Flux (118824 flux in 499.59ms)
Unknown mark fd
T35.0: IBM Empty from Raw Flux (173213 flux in 499.60ms)
T35.1: IBM Empty from Raw Flux (164984 flux in 499.55ms)
T36.0: IBM MFM (8/8 sectors) from Raw Flux (118764 flux in 499.58ms)
T36.1: IBM MFM (8/8 sectors) from Raw Flux (118873 flux in 499.59ms)
T37.0: IBM Empty from Raw Flux (173907 flux in 499.59ms)
T37.1: IBM Empty from Raw Flux (170007 flux in 499.58ms)
T38.0: IBM MFM (8/8 sectors) from Raw Flux (119028 flux in 499.55ms)
T38.1: IBM MFM (8/8 sectors) from Raw Flux (118860 flux in 499.57ms)
T39.0: IBM Empty from Raw Flux (172404 flux in 499.57ms)
T39.1: IBM Empty from Raw Flux (166816 flux in 499.57ms)
T40.0: IBM MFM (8/8 sectors) from Raw Flux (119101 flux in 499.59ms)
T40.1: IBM MFM (8/8 sectors) from Raw Flux (118147 flux in 499.58ms)
T41.0: IBM Empty from Raw Flux (174128 flux in 499.56ms)
T41.1: IBM Empty from Raw Flux (173350 flux in 499.55ms)
T42.0: IBM MFM (8/8 sectors) from Raw Flux (117534 flux in 499.56ms)
T42.1: IBM MFM (8/8 sectors) from Raw Flux (119268 flux in 499.57ms)
T43.0: IBM Empty from Raw Flux (173843 flux in 499.54ms)
Unknown mark f9
T43.1: IBM Empty from Raw Flux (172844 flux in 499.58ms)
T44.0: IBM MFM (8/8 sectors) from Raw Flux (119328 flux in 499.60ms)
T44.1: IBM MFM (8/8 sectors) from Raw Flux (119316 flux in 499.55ms)
T45.0: IBM Empty from Raw Flux (184312 flux in 499.56ms)
Unknown mark ff
T45.1: IBM Empty from Raw Flux (191035 flux in 499.58ms)
T46.0: IBM MFM (8/8 sectors) from Raw Flux (118939 flux in 499.57ms)
T46.1: IBM MFM (8/8 sectors) from Raw Flux (118154 flux in 499.59ms)
T47.0: IBM Empty from Raw Flux (179941 flux in 499.55ms)
T47.1: IBM Empty from Raw Flux (191832 flux in 499.57ms)
T48.0: IBM MFM (8/8 sectors) from Raw Flux (118236 flux in 499.55ms)
T48.1: IBM MFM (8/8 sectors) from Raw Flux (119136 flux in 499.55ms)
T49.0: IBM Empty from Raw Flux (182487 flux in 499.57ms)
T49.1: IBM Empty from Raw Flux (188698 flux in 499.55ms)
T50.0: IBM MFM (8/8 sectors) from Raw Flux (119322 flux in 499.56ms)
T50.1: IBM MFM (8/8 sectors) from Raw Flux (119233 flux in 499.58ms)
Unknown mark fc
T51.0: IBM Empty from Raw Flux (182084 flux in 499.56ms)
T51.1: IBM Empty from Raw Flux (187955 flux in 499.55ms)
T52.0: IBM MFM (8/8 sectors) from Raw Flux (119035 flux in 499.59ms)
T52.1: IBM MFM (8/8 sectors) from Raw Flux (118230 flux in 499.57ms)
T53.0: IBM Empty from Raw Flux (180156 flux in 499.57ms)
T53.1: IBM Empty from Raw Flux (195524 flux in 499.57ms)
T54.0: IBM MFM (8/8 sectors) from Raw Flux (118135 flux in 499.56ms)
T54.1: IBM MFM (8/8 sectors) from Raw Flux (119065 flux in 499.60ms)
Unknown mark fc
T55.0: IBM Empty from Raw Flux (172272 flux in 499.55ms)
T55.1: IBM Empty from Raw Flux (194853 flux in 499.56ms)
T56.0: IBM MFM (8/8 sectors) from Raw Flux (119333 flux in 499.57ms)
T56.1: IBM MFM (8/8 sectors) from Raw Flux (119364 flux in 499.54ms)
T57.0: IBM Empty from Raw Flux (173970 flux in 499.56ms)
Unknown mark ff
T57.1: IBM Empty from Raw Flux (187439 flux in 499.56ms)
T58.0: IBM MFM (8/8 sectors) from Raw Flux (119131 flux in 499.55ms)
T58.1: IBM MFM (8/8 sectors) from Raw Flux (118399 flux in 499.56ms)
T59.0: IBM Empty from Raw Flux (182876 flux in 499.57ms)
T59.1: IBM Empty from Raw Flux (185276 flux in 499.57ms)
T60.0: IBM MFM (8/8 sectors) from Raw Flux (118104 flux in 499.56ms)
T60.1: IBM MFM (8/8 sectors) from Raw Flux (119095 flux in 499.55ms)
T61.0: IBM Empty from Raw Flux (184983 flux in 499.58ms)
T61.1: IBM Empty from Raw Flux (192221 flux in 499.55ms)
T62.0: IBM MFM (8/8 sectors) from Raw Flux (119160 flux in 499.56ms)
T62.1: IBM MFM (8/8 sectors) from Raw Flux (119112 flux in 499.58ms)
T63.0: IBM Empty from Raw Flux (174081 flux in 499.56ms)
T63.1: IBM Empty from Raw Flux (193996 flux in 499.54ms)
T64.0: IBM MFM (8/8 sectors) from Raw Flux (118938 flux in 499.55ms)
T64.1: IBM MFM (8/8 sectors) from Raw Flux (117901 flux in 499.58ms)
T65.0: IBM Empty from Raw Flux (158107 flux in 499.54ms)
T65.1: IBM Empty from Raw Flux (189922 flux in 499.57ms)
T66.0: IBM MFM (8/8 sectors) from Raw Flux (117749 flux in 499.55ms)
T66.1: IBM MFM (8/8 sectors) from Raw Flux (115579 flux in 499.56ms)
T67.0: IBM Empty from Raw Flux (176352 flux in 499.54ms)
T67.1: IBM Empty from Raw Flux (187015 flux in 499.55ms)
T68.0: IBM MFM (8/8 sectors) from Raw Flux (116177 flux in 499.54ms)
T68.1: IBM MFM (8/8 sectors) from Raw Flux (115115 flux in 499.56ms)
T69.0: IBM Empty from Raw Flux (182223 flux in 499.57ms)
T69.1: IBM Empty from Raw Flux (193248 flux in 499.56ms)
T70.0: IBM MFM (8/8 sectors) from Raw Flux (115686 flux in 499.55ms)
T70.1: IBM MFM (8/8 sectors) from Raw Flux (116040 flux in 499.57ms)
T71.0: IBM Empty from Raw Flux (180119 flux in 499.53ms)
T71.1: IBM Empty from Raw Flux (193557 flux in 499.58ms)
T72.0: IBM MFM (8/8 sectors) from Raw Flux (116136 flux in 499.57ms)
T72.1: IBM MFM (8/8 sectors) from Raw Flux (115506 flux in 499.57ms)
T73.0: IBM Empty from Raw Flux (161103 flux in 499.56ms)
T73.1: IBM Empty from Raw Flux (191854 flux in 499.56ms)
T74.0: IBM MFM (8/8 sectors) from Raw Flux (117276 flux in 499.55ms)
T74.1: IBM MFM (8/8 sectors) from Raw Flux (116725 flux in 499.56ms)
T75.0: IBM Empty from Raw Flux (175310 flux in 499.57ms)
T75.1: IBM Empty from Raw Flux (192592 flux in 499.54ms)
T76.0: IBM MFM (8/8 sectors) from Raw Flux (117293 flux in 499.54ms)
T76.1: IBM MFM (8/8 sectors) from Raw Flux (115327 flux in 499.55ms)
T77.0: IBM Empty from Raw Flux (181186 flux in 499.55ms)
T77.1: IBM Empty from Raw Flux (192434 flux in 499.56ms)
T78.0: IBM MFM (8/8 sectors) from Raw Flux (114996 flux in 499.56ms)
T78.1: IBM MFM (8/8 sectors) from Raw Flux (114584 flux in 499.59ms)
T79.0: IBM Empty from Raw Flux (171367 flux in 499.54ms)
T79.1: IBM Empty from Raw Flux (200966 flux in 499.54ms)
Cyl-> 0         1         2         3         4         5         6         7         
H. S: 01234567890123456789012345678901234567890123456789012345678901234567890123456789
0. 0: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 1: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 2: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 3: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 4: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 5: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 6: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
0. 7: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 0: ...X. ...X. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 1: ..... .X... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 2: .X.X. .X... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 3: .X. . .X.X. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 4: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 5: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 6: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
1. 7: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Found 646 sectors of 655 (98%)

I dumped raw files to HxC and it didn't look so great to me so I'll leave that to you to judge. Please let me know if there is something specific in HxC I missed as I am learning. Again, I really appreciate the help on this long overdue project. Data is only 41 years old after all. :)

Sneak peek at the initial design for the awesome enclosure I made for my GW.

[jfrazier00]

Silly me I had wrong cyl and step as args. I used gw convert --format ibm.scan track00.0.raw --tracks=c=0-39:step=2 chars-ibmscan.img instead and got much better results.

Cyl-> 0         1         2         3         
H. S: 0123456789012345678901234567890123456789
0. 0: ........................................
0. 1: ........................................
0. 2: ........................................
0. 3: ........................................
0. 4: ........................................
0. 5: ........................................
0. 6: ........................................
0. 7: ........................................
1. 0: ........................................
1. 1: ........................................
1. 2: ........................................
1. 3: ........................................
1. 4: ........................................
1. 5: ........................................
1. 6: ........................................
1. 7: ........................................
Found 640 sectors of 640 (100%)

Now off to see if I can make heads/tails of this old source. Thanks guys.

[jfrazier00]

What do you guys recommend as the best PC emulator (prefer Mac but have Windows box too)? Specifically this code was XT-era so I am looking for the simplest way to take my .IMG files and mount and get the contents to a modern box. So far I have had some very bizarre results with some of the emulators and how the IMG file is interpreted with many of the emulators I have tried so far.