Just curious if anyone has gotten ECS 1.2R working in VirtualBox.
Iv'e read a lot of old posts, some saying it's not possible and others seem to hint they did it successfully.
It is certainly possible (at least with a win 10 host). I made one VBox (a few years ago) with three virtual disk drives. I installed eCS 2.1, on one disk, eCS 2.2 on the second disk, and the third disk is shared with programs, and data (pretty much exactly what I do on a real machine, although that is usually on only one disk). I have done the same thing with ArcaOS, recently, using only one virtual disk. My collection also includes simple Warp 3, and warp 4 systems. ECS 2.1 isn't a whole lot different from eCS 1.2R.
I do know that Linux introduces some complications with, so called, security features, but I don't know what needs to be done to make it happy. It is likely in the docs, somewhere.
Simply build a machine from VBox, and install eCS into it (just like you would with a real machine). If you are using eCS 1.2R, it won't have support for AHCI, so stay with IDE. I also suggest using the SoundBlaster 16 (PNP) option, for sound. You can use a Gigabit NIC, but eCS 1.2R probably doesn't have a driver for it, so use the default (FAST...) NIC. All of those things can be changed later, if you can get the drivers, and do it in a logical sequence.
It is important to enable VT-x/AMD-V in BIOS, and choose the Legacy option in System-> Acceleration.
Hopefully, that will get you started.