any "preferred" disk format for CP/M on 8-inch double-density floppy?

On 06/13/2014 12:58 PM, Fred Cisin wrote: What, not 48x128? (There were systems that did that). And sectors/size per track completely avoids how the data is logically organized among those sectors. Sector interleave (i.e. physical->logical equivalence), cylinder/side ordering (e.g., one side then the other in reverse) have provided me with endless hours of amusement. Oddball cylinder and side skewing are fun in particular. Where does the directory go? (e.g. the middle of the disk) How do you order allocation units from there? (e.g. first, cylinders above the directory, then cylinders below--or alternating above/below) How about the boot tracks? If your controller can handle unity interleave, why not speed up the cold boot process by avoiding any interleave on those tracks? How about your allocation unit size (e.g. absurdly large)? Directory size (e.g. absurdly small)? Full or half-full directory entries (in an attempt to keep 128 128-byte logical sectors as the limit for a single directory entry). Figuring the number of sectors and size of those on a track is only a very small beginning. CP/M in practice distinguished itself by the incredible number of disk organization variations. --Chuck