@alenppc
With INT2 connected, I can't get any machines to post on REV 3, regardless of R1 resistor, Witt our without HD attached. It is incredibly finicky about the connected device, and I believe my issue is CF->IDE and SD->IDE converters that are attempting to pull power from the port (I've tested with/without additional power connected to them and they still light up.). I'm wondering if your non corrupting hard drive is adding capacitance/resistance to some of the lines.
The ST always gets a bad rap. I feel there is an elegance to it; I can "feel" it in GEM and the engineering of the hardware. Though it won't ever replace my Amigas or 8-bit Ataris, it will always have a place here. If you get a chance, pick one up IMO.