
The procedure for setting up MVC is the same as described for setting up a portable directory, only you must make another Batch file exclusively for the MVC so that it does not alter your system's AppData folder. If not, contact me personally and I will gladly be of assistance as soon as possible. A tutorial on the thumb-drive technique which we will be using here can be found at - This will work with the new Launcher, but MVC will only work for the old one, so you'll want to get your hands on a copy of that, which can most likely be found on numerous file-sharing sites. Using the custom-directory technique, the old launcher, and MVC, it is possible to go back as far as Indev or Classic. Also out there is a little Java application called Minecraft Version Changer.



I'm not sure about using old jars and the version directory, but I do know this - there is a way to run the old Minecraft.exe in such a way that it downloads to a specific directory - this was originally designed to that one could place a valid Minecraft installation on his or her thumb drive or other removable media and run it from there.
