A frightening little bit of technology

Chris M chrism3667 at yahoo.com
Thu Sep 6 15:34:41 CDT 2007

--- Chuck Guzis <cclist at sydex.com> wrote:

> Let's be clear here--I interpret 5.25 DD to be 360K
> (250K data rate 
> at 300 RPM) at 48 tpi.  And "quad" to me is the same
> data rate but 
> narrower tracks for 96 tpi and 720K.  AFAIK, the
> only difference 
> between DSDD and DSQD was the supposed certification
> provided by the 
> mnaufacturer.  I never found any difference at all.

 Well I wish you could have been clear about this ~20
years back. I thus wouldn't have blown all those extra
cordobas on senseless certification! Sheesh!

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