There were a few systems (such as CP/M) that optimized (or attempted to) interleave depending on use. So, "boot" tracks were 1:1, "directory" may have been 2:1 and user data 3:1.

Schemes varied widely. One or two even interleaved side-to-side in addition to "skewing track-to-track. Obviously written by a programmer tasked with the job of "Let's see how fast we can get data on or off this thing".

--Chuck

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