ya, I got oracle 10g express database dvd from oracle. But due to various reasons i want to have cd version. So i checked size of DVD it is 840 MB. This dvd is all one means it is having installer for Windows,Linux( Redhat,Debian). so using Ultraiso ( very feature rich software to edit,create dvd/cd iso images) i made image of DVDROM and removed debian package, windows package – Bingo now size is 450 MB only 
If you Deb guy then remove Redhat rpm and windows installer file simple. Now i can Cut ORacle 10g xe DVD to Cdrom.
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