On Fri, 13 Apr 2012, Christian Bartsch | KryoFlux Ltd. wrote:
As said above, you need a HD 5.25" drive, which
usually needs to be
modded. Unless you would want to cut open your disk jackets, remove the
platter and place it in a jacket with two index holes.
If "flippies" are the only problem, . . .
There IS enough flexibility and slack in the jacket to be able to
CAREFULLY punch the other jacket holes (one on each side) without
disassembly, using a very ordinary handheld hole punch. My first retail
product "Berkeley Microcomputer Flip-Jig" was a plexiglass pocket jig for
marking the positions of where to punch. The "deluxe" version, and the
8" versions, also had a jig for installing center hole re-inforcers.