Well I have similar problems with DVD installation (stopped at one specific tar) and then I/O ERROR
I thought DVD might be burned not properly, but I burned it again let MDchecked and it was ok, ran again the installation -> same result I/O ERROR
Then I thought DVD drive might not work properly, replaced the DVD dirve, same result.
Now I think it might be the M/B
0710 Beta 4 is running perfectly
it is only 0710 RC2 that will not install from DVD (as above). CD installation finishes ok, but MCE does not want to start on my machine.
Any help?