Again, I have no clue about "missing" files.
MyIDE-][ is a plug-and-play device.
Changing the content can be done (at your won risk) with the atarimax studio software.
Or with ready to use versions.
I am moderator on this forum and the inventor of the MyIDE-port.
I am not the manager of Atarimax, nor do I maintain the homepage.
I am just on the forum to help poelple as much as I can with there MyIDE-hardware.
SDX:
download the "RAM" version from the SDX-homepage.
Put that on your CF card, load it with the FAT-loader.
That is it. SDX loads and starts.
You need to configure SDX (yourself, with the supplied toolkit) to match the hardware you are running.
For some tips, you can check here:
viewtopic.php?f=17&t=1591But better use the SDX-homepage and there manual/instructions.
I can't help you with SDX, I am not a SpartaDos-guy.
Helping you, how to setting up on your MyIDE-][, yeah, sure, read above.
The reset-button is an optional item you can buy from Atarimax.
It's on request only, not a stock/standard item.