thinking of the "ultimate" retro x86 PCs - what bits to seek/keep ?

[Fred Cisin]

On Mon, 6 Jun 2016, Liam Proven wrote:
> And there was never a 720kB IBM standard, only on things like Apricots.

Could you explain?
720K was just as much of an IBM "standard" as 360K.  Starting with PC-DOS 
3.20, ("/F:2").  Sure, other companies used the same media for different 
formats, but nowhere near as much as 5.25".
"Convertible", PS/2, optional in and external to AT.


If a good 150RPM ED drive were to have been readily available, then 2.8M 
could have been retrofitted to all 1.4M systems, including Amiga, etc. 
But would that, and the Barium-Ferrite disks have been worth it for just 
twice the capacity?