# Making the installer in Windows
- Supported version: 0.6.0
While you don't need a fresh install of macOS to use OpenCore, some users prefer having a fresh slate with their boot manager upgrades.
To start you'll need the following:
- 4GB USB Stick
# Downloading macOS
To start, open gibMacOS.bat as Admin and select
Now search through for your desired version of macOS, for this example we'll choose option 5 for macOS Catalina:
This will download the RecoveryHDMetaDmg.pkg to
\gibmacos-master\macOS Downloads\publicrelease\xxx-xxxxx - 10.x.x macOS xxx
# Making the installer
MakeInstall.bat as Admin and select your drive with option O for OpenCore( ex: 1O).
Once your drive is formatted, it will then ask you for the
RecoveryHDMetaDMG.pkg that we downloaded earlier. Top left of the file window will let you copy the file path:
MakeInstall will finish up by installing OpenCore to your USB's EFI System Partition, you can find this partition labeled as