how to connect to old minecraft servers on the new launcher

I was really hoping there'd be a parameter I could use instead.ĭo you folks have any suggestions on how to accomplish this? It's much appreciated, and I'll gladly create a guide if I get it figured out. I've read that it may be possible to set a different path through Java reflection but that's beyond my abilities. The closest solution I've come up with is running the launcher via a batch file that temporarily sets AppData elsewhere. I was wondering if there's a parameter I can pass Forge to look in a different folder for mods/configs instead, otherwise I can only have one old Forge install.

minecraft in AppData, even if you've set a profile up in another directory. The only trouble is that Forge still wants to install to. (Copy 'versions' folder, install Forge, update json). I've worked out that you can install them manually following instructions in this thread. The thing is, older Forge versions don't have an installer that works with the new launcher. I want to have an archived copy of my old FTB/Tekkit/TerraFirmaCraft worlds without keeping old launchers around, and I think this is possible with the new profile system.

I'm attempting to combine all my launchers under the new vanilla launcher.

How to connect to old minecraft servers on the new launcher