▶How to create a bootable install image (OS X Mavericks)

cp -av Install\ OS\ X\ Mavericks.app/Contents/SharedSupport/InstallESD.dmg ./
hdiutil attach InstallESD.dmg
cp -av /Volumes/OS\ X\ Install\ ESD/BaseSystem.dmg ./
chflags nohidden BaseSystem.dmg
hdiutil convert BaseSystem.dmg -format UDRW -o BaseSystem_temp.dmg
hdiutil resize BaseSystem_temp.dmg -size 6g
hdiutil attach BaseSystem_temp.dmg
rm /Volumes/OS\ X\ Base\ System/System/Installation/Packages
cp -av /Volumes/OS\ X\ Install\ ESD/Packages /Volumes/OS\ X\ Base\ System/System/Installation/
diff /Volumes/OS\ X\ Install\ ESD/Packages /Volumes/OS\ X\ Base\ System/System/Installation/Packages
hdiutil detach /Volumes/OS\ X\ Install\ ESD/
hdiutil detach /Volumes/OS\ X\ Base\ System/
hdiutil convert BaseSystem_temp.dmg -format UDZO -o BaseSystem_bootable.dmg
rm BaseSystem_temp.dmg BaseSystem.dmg InstallESD.dmg

# Note: not confirmed yet.
# Update: confirmed!