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1. Open a .txt file on your desktop by right clicking on your desktop -> New -> Text Document

2. Open the txt file to edit it.

3. Depending on how many RAM you have you copy the following into the Text Document:

Warning do NOT allocate more then you have on Memory (RAM)!
Replace C:\<your minecraft directory\minecraft.exe> with the location of YOUR minecraft.exe
  • I want to allocate 2GB RAM
    • javaw -Xmx2048m -Xms1024m -jar "C:\<your minecraft directory\Minecraft.exe>"



  • I want to allocate 3GB RAM
    • javaw -Xmx3072m -Xms1536m -jar "C:\<your minecraft directory\Minecraft.exe>"



  • I want to allocate 4GB RAM
    • javaw -Xmx4096m -Xms2048m -jar "C:\<your minecraft directory\Minecraft.exe>"



  • I want to allocate 5GB RAM
    • javaw -Xmx5120m -Xms2560m -jar "C:\<your minecraft directory\Minecraft.exe>"



  • I want to allocate 6GB RAM
    • javaw -Xmx6144m -Xms3072m -jar "C:\<your minecraft directory\Minecraft.exe>"



  • I want to allocate 7GB RAM
    • javaw -Xmx7168m -Xms3584m -jar "C:\<your minecraft directory\Minecraft.exe>"



  • I want to allocate 8GB RAM
    • javaw -Xmx8192m -Xms4096m -jar "C:\<your minecraft directory\Minecraft.exe>"

4. save the text file to mc.bat

5. double-click the mc.bat file when you want to play minecraft and you will launch it with the amount of memory configured in the file above.