oracle 11g r2 installation error in windows

I downloaded the files from OTN with following names:
win64_11gR2_database_1of2.zip
and
win64_11gR2_database_2of2.zip

Extracted both into the SAME directory with these names
C:\Oracle\Disk1 and
C:\Oracle\Disk2
Started the installation from C:\Oracle\Disk1\database\setup.exe
And the Installation failed due to file not found of {C:\app\11g\product\11.2.0\dbhome_1\oc4j\j2ee\oc4j_applications\WFMLRSVCApp.ear and some other files too}
I went through the http://download.oracle.com/docs/cd/E11882_01/install.112/e10843/toc.htm

but there was nothing which mentioned where or how to rename the directories.All my downloaded files were in the same directory but still I was facing the problem. As both zip files contained database folder so I couldn't override the files. I solved the file not found issue by coping all the folders under "C:\Oracle\Disk2\database\stage\Components" to
"C:\Oracle\Disk1\database\stage\Components"
After restarting the installation it went like a charm and without any issues.

courtsey:-https://forums.oracle.com/forums/thread.jspa?threadID=1054514