Download zip file from Oracle E delivery Portal. All the zip file stored in place, so that easy to create Stage area(R12.2.4) using 
Always we need to download latest StartCD  buildStage.sh.
$ cd /apps/StageR122/StartCD/Disk1/rapidwiz/bin
$ls -l  buildStage.sh.
$./buildStage.sh
Copyright (c) 2002, 2013 Oracle Corporation
                        Redwood Shores, California, USA
                       Oracle E-Business Suite Rapid Install
                                 Version 12.2.0
Press Enter to continue...
                      Build Stage Menu
   ------------------------------------------------------
   1.     Create new stage area
   2.     Copy patches to existing stage area
   3.     List files in TechPatches directory
   4.     Exit menu
   Enter your choice [4]: 1
            Rapid Install Platform Menu
   ------------------------------------------------------
   1.    Oracle Solaris SPARC (64-bit)
   2.    Linux x86 (64-bit)
   3.    IBM AIX on Power Systems (64-bit)
   4.    HP-UX Itanium
   5.    Exit Menu
   Enter your choice [5]: 1
Running command:
/apps2/scratch/Stage122/startCD/Disk1/rapidwiz/bin/../jre/Solaris/1.6.0/bin/java -classpath /apps2/scratch//Stage122/startCD/Disk1/rapidwiz/bin/../jlib/emocmutl.jar:/apps2/scratch/PRs
Specify the directory containing the zipped installation media: specify what location you want to unback
Eg : /apps2/scratch/Stage122
you can see the following directory 
1. EBSInstallMedia
2.TechInstallMedia.
Eg: EBSIntallMedia you can see the following directory
- APPDB
- AS10.1.2
- Apps
  TechIntallMedia.
- database
- Wls1036_generic
- ogs11116
 
