copy protected CD's

hi friend that was a good question about copyright protected game CD's, yes i have also encounterd many games cds. that cannot be fully copy to your hard disk the reason is that the orignal manufacturers place some hidden anticopy programs( a simple dos program) that dosen't allow you to copy and if try to copy it shows "\\\\ cannot copy invalid dos function//////
actually in detail There are six major copy protection schemes that te manufacturers use :-
serial number/ authorization code,
hidden file placement during installation,
original CD insertion during launch,
authorization floppy disks,
challenge/ response strings, and
the dongle.
we cann't do any thing to copy those protected contents but i advice you to try the softwares like
Cd Game Cloner, Clone, Clone Cd Game, Clone Dvd Game, Clone Game, Clone Game Cd, Copy, Game Cd Clone, Game Clone Cd, Game Cloner, Game Cloner, Game Copier, Mac Game Cloner, Pc Game Copier Free, Xcopy etc etc.

01) GAME COPIER 2.0 ( a game copier software)

the link is:- http://www.filedudes.com/Game_Copier-download-37815.html

02) clonecd/dvd
i have also read the article on different forums which you can also use which may help you

http://www.devhardware.com/forums/storage-devices-80/cd-rom-invalid-ms-dos-function-28175.html

http://www.dsg.cs.tcd.ie/~haahrm/copying-protected-cds/

http://club.cdfreaks.com/f18/how-backup-copy-protected-game-cd-64534/