You’ll now have Mavericks.iso on your Desktop, ready for VirtualBox/VMware or burning to a USB/DVD. If you don’t need ISO, the DMG is easier. Use this archived Apple link (still active):
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Open Terminal (on a Mac) and paste this command: Download Mac OS X Mavericks -10.9- ISO directly for free.
# Create a temporary disk image from the installer hdiutil create -o /tmp/Mavericks -size 8g -layout SPUD -fs JHFS+ hdiutil attach /tmp/Mavericks.dmg -noverify -mountpoint /Volumes/ISO_Installer Copy the installer files (this takes ~10 minutes) sudo /Applications/Install\ Mac\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia --volume /Volumes/ISO_Installer --nointeraction Unmount and convert to ISO hdiutil detach /Volumes/Install\ OS\ X\ Mavericks hdiutil convert /tmp/Mavericks.dmg -format UDTO -o ~/Desktop/Mavericks.iso Rename the .cdr to .iso mv ~/Desktop/Mavericks.iso.cdr ~/Desktop/Mavericks.iso You’ll now have Mavericks