I want to have a dual boot of Windows 7 32bits partition side by side to a Windows 7 64bits partition on the same hardware. Do I need two licenses? At any time I am able to utilize only one partition. As if one puts the same copy of the Windows on the
several partitions on the same hardware. That is a good practice to gradually push the entire market towards 64 bits, looking farther than immediate market.
1) You do need two licenses, one for the 32-Bit version and another license for the 64-Bit. Note: Even though you do get two DVDs with the retail product one only get one product key.
2) "At any time I am able to utilize only one partition". You can only have one version of Windows running but no matter whit partition/version of Windows you boot to, you will be able to access the other partition using Windows Explorer.