how to find OS X Mavericks InstallESD image file

how to find OS X Mavericks InstallESD image file

Launch Terminal to show hidden files and relaunch the Finder using this defaults command string:
defaults write com.apple.Finder AppleShowAllFiles TRUE;\killall Finder;\say Files Revealed

Go to the /Applications/ folder to locate the “Install OS X 10.9 Developer Preview.app” file
Right-click and choose “Show Package Contents”, then open “Contents” and open “SharedSupport”
Show Package Contents of Mavericks installer

copy  “InstallESD.dmg”