Is it possible that 2 Separate Operating Systems (One Win 7 64-Bit and One Win 7 32-Bit) can be installed in a same laptop? I meant these both OS should be in one laptop at the same time. And one more question. If I put 4 GB RAM in the laptop, then will Both OS will detects whole 4 GB RAM in their respective systems. and Will I need to get separate software driver for my (Discrete) Graphics Card for the respective OS? Plz tell me Thanks in Advance. Sorry By 2 OS I meant One Win 64-Bit and One Windows XP.