Can't install openSUSE 11.2.iso file

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http://forums.opensuse.org – Hello, When trying to install opensuse 11.2 from .iso file I get an error "make sure that cd number 1 is in your drive" .. I use Asus p5w dh deluxe motherboard, cd/dvd writer. In bios everything is set correct, bios is up-to-date. However it fails when trying to install .iso from DVD, also 11.1 fails to install which was working/installing just fine last week .. Also I tried to modify time/date in bios, set different boot options in bios, ... Still not working? Thanks in advance for your answers .. (Distributions)