This will just make gaps between sectors bigger, lowering capacity given standard bitrate and rotation speed. The point of zone bit recording (ZBR) / zoned con

This will just make gaps between sectors bigger, lowering capacity given standard bitrate and rotation speed. The point of zone bit recording (ZBR) / zoned constant linear velocity (ZCLV) is to pack mode data on the outside (longer) cylinders. Doing some back of napkin calculations the most Outer track has circumference of ~27 cm while inner is ~18cm long. Outer track should be able to fit 1.5 x magnetic flips while staying in spec. If you want even more data you go GCR all the way to RLL encoding. Fantastic dev blog documenting implementation of 3.5 Inch HD (2.7)RLL Floppy Controller for use in MEGA65 project: https://c65gs.blogspot.com/2022/01/more-work-on-hd-floppies-rll-encoding.html https://c65gs.blogspot.com/2022/01/more-work-on-hd-floppies-... Over 3MB out of standard 1.44MB drive/floppy by combining both zone recording and RLL.