On Fri, Jun 19, 2026 at 2:45 PM André Fachat <afachat_at_gmx.de> wrote: > > > Correct. The only difference is that due to the smaller tracks the bits on the media get smaller two. Eventually reaching a point where the quality of the material (e.g granularity of the magnetic material) makes it unreliable. > it's not the material, it's the head's pole gap that are too large. 100 tpi heads (or 96 tpi ones, they're identical) have a much smaller magnetic gap. So with even higher clock rates, 8x50/SFD-1001 drives can format 29 to 23 sectors on the same magnetic media, and I've read without errors disks written in 1986 with the SFD-1001. IZ8DWF > >Received on 2026-06-19 14:00:57
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