On Sat, 21 Nov 2009, Tony Duell wrote:
The hole sizes are somwhat different (in particlar the
hole in the
hjacket is smaller than 5mmm). The 3" disk has a hard plasic case with an
intenral shutter, mechancially superior to the 3.5" one. Openin the
shutter (done by a slider on the side of the disk which catches on a hook
when you put the disk in the drive) also exposes the index hole. The hole
is in the magnetic media itself, not in the plastic hub or anything like
that.
Also, the SS media is explicitly flippy