x86-64 Mediatest Gotcha

[richard mullens]

Seeking to discover whether it was the CD writer on my 32 bit system, or 
the CD reader on my 64 bit system which was the cause of media check 
failures, I tried to perform a media check by booting the 32 bit system 
with the 64 bit disc1.

Unfortunately it rejected the CD as being inappropriate for the (32 bit) 
system - and thereby prevented me from performing the test (in this way, 
at least).