Rich Mellor wrote:
> HD - 160 tracks, gives 0.5 (K) x 18 x 160 = 1440K

All QL formats have 80 tracks per disc, DD is 9 sectors per track AND
SIDE (=18 sectors/track), HD is 18 sectors per track and side (=36
sectors/track) and ED is finally 18 sectors per track and side.

At a typical 300 RPM a DD floppy had a bitrate of about 250kBit/s, HD
and ED double and quadruple that.

> ED disk drives I think used 1024 bytes per sector -> 1 (K) x 18 x ?? = 3200K

No.

Marcel

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