This is the key step to keep your data on the USB rather than your computer's

While the latest version of Minecraft is 1.20+, the 1.8.9 release holds a special place in the community's heart. Released in late 2015, it is widely considered the "Golden Era" of PvP (Player vs. Player) mechanics.

Keep your 1.8.9 PvP setup completely separate from your modern survival worlds. How to Set Up Minecraft 1.8.9 Portable

Download the official Minecraft launcher standalone executable ( Minecraft.exe ) and place it on your USB drive inside a folder named MC_Portable .

X:\Minecraft_189_Portable\ │ ├── MultiMC (the launcher folder) │ ├── MultiMC.exe │ ├── instances │ │ └── 1.8.9_PvP │ └── libraries │ ├── Java_Runtime (portable Java 8) │ └── bin\javaw.exe │ ├── Saves (backup of worlds) └── mods (for Forge/OptiFine)

The file was a diary of a traveler who had played this specific portable version across three different continents, using library computers and school labs. Every bridge built and every torch placed was a marker of a life lived on the move. Elias looked at the screen and realized he wasn't just playing a game; he was holding a digital time capsule.