Using Trax from Bags of Trick detects two things: 1) volume number = $11, this can be a problem 2) address field epilogue changed from $DE to $DF, this is easy With Copy II+ Manual Sector Copy we can get a copy, then with Sector Editor we can "normalize" RWTS. track $00 sector $03 byte $91 change $DF to $DE - CMP #$DF -> CMP #$DE sector $06 byte $AE change $DF to $DE - LDA #$DF -> LDA #$DE If you are planning to use a real Apple II you can stop reading here. The rest of you that want to run this thing on an emulator needs to "ipnotize" the RWTS and make it believe that the volume number is 0 = no check, all volume number OK (see notes) track $00 sector $08 byte $12 change $B1 $48 to $A9 $00 - LDA ($48),Y -> LDA #$00 Notes - Track $05 is the CATALOG with only one file, name = 7 ctrl-H, track/sector list in $22/$0F point to $22/0E & $22/$0D. - All the other (file) cracks I know, and also a ProDOS version, are missing the title screen animation. - in .dsk images volume number is fixed to $FE, use .2mg and set vol # = $11 if you don't want apply the last patch.