C'mon guys... Nobody with a Model I and E/I with disk drives left it stock without a
doubler of some kind...
and... If you had the LNDoubler, you could do 8" and 5.25" (and now 3.5")
single and double density disks all with the same board.
I don't know of any board that only added 8" without adding a Doubler as well.
I'm not saying there wasn't one... I just don't know about it.
Percom, Tandy, LNW and Aerocomp made doublers. I think only the latter two supported
8" drives.
Any Model I equipped with a doubler should be able to copy a Model III bootable diskette.
Al
Keansburg, NJ