![]() ![]() # Restore the Base System into the macOS Blank sparseimageĪsr restore -source /Applications/Install\ macOS*.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -eraseĬp -rp /Applications/Install\ macOS*.app /Volumes/macOS\ Base\ System Hdiutil attach /tmp/macOS.sparseimage -noverify -nobrowse -mountpoint /Volumes/install_build Hdiutil create -o /tmp/macOS -size 8316m -layout SPUD -fs HFS J -type SPARSE # Create macOS sparseimage of 8316mb with a Single Partition - Apple Partition Map Note: you will need approx 18GB of free space on your hard disk for the script to complete. ![]() The commands in this executable script are shown below for informational purposes. ![]() Download and unzip the attached macOS_iso_creator.tool into your ~/Downloads folder:įor Final Release macOS_iso_creator_19A602.zip Note: You can verify the installer app by checking the SHA1 of InstallESD.dmg and BaseSystem.dmg (inside the \Install macOS Catalina Beta.app\Contents\SharedSupport folder) with the correct ones at this website. The app can be obtained from the App Store by enrolling in Apple's Public Beta program or directly from the software catalog with installScript_fullapp.zip. On your Mac or Hack, download/copy "Install macOS Catalina.app" into your Applications folder. ![]() To prepare the Catalina ISO on your Mac or Hack, you can use my macOS_iso_creator.tool.ġ. ![]()
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