Hi, I very rarely use macs. But I need to test my plugin asset on OSX in Unity 4 and 5 32 bit and 64 bit. I had unity 4.6 installed on the mac. I downloaded and installed unity 5 on it while I was doing other stuff. Now unity 4 is gone. What happened?
You can install several versions of Unity if you choose a different install location. Your Unity 5 installer overwrote your previous version. Change the install location in your installer.
For example: “C:/Program Files/Unity 4.6” and “C:/Program Files/Unity 5”
This has been answered already
On a mac you have to install one, then rename its install folder, the install the other. You cant choose an install path in macs because they are terrible.