WILLIAM KITCHEN wrote in a message to GEORGE WHITE:

 RJT> Now *that* would make sense.  I read somewhere that the 3.5"
 RJT> floppy was chosen because it would fit in a shirt pocket.  Seems
 RJT> to me I remember vaguely that there were also 3" and 4" media
 RJT> around at that time,  now long gone

GW> There were 3" floppies, I've got some here! Amstrad used them in it's
  > word processor. I've never come across another use of them though...

 WK> I don't know if it's the same ones, but I remember seeing some less
 WK> than 3.5" floppies on some electronic musical instruments in the
 WK> mid  to late 1980's. Also, I recall reading about some that were
 WK> used on  some Japanese made personal computers that stirred up some
 WK> fuss but  still failed to catch on in the US around that time. (I
 WK> think these  had an OS called MSX, or maybe that was a hardware
 WK> compatibility spec,  or maybe something else entirely.

It was a hardware spec.  I have one,  a Yamaha CX-5.  Z80-based machine...

The FDD that goes with it is a 3.5",  720k drive.

 WK> It's been a long time.) I never saw  one of those live though. 
 WK> Seems like these floppies may have been  around 3", or possibly 
 WK> even a bit smaller.

I remember those smaller disks,  too.  Also in musical stuff.  No cover, 
no shutter to cover the medium,  and they were single-sided,  which meant
that you had to flip them over to use the other side.  Horrible for
reliability.

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