Quick, stupid question. If I have 2 partitions, one with Vista, one with 7, do I need an antivirus on both partitions? On my other machine, which has vista and xp, I had downloaded an antivirus on both partitions. Am I correct in doing this?

Note: I do not have a seperate partition for the data, I basically have 2 partitions with each one having differents OSs. The A/V app should be ABLE to SCAN the other partition without regard to the OS ...
I have XP/Vista/Win7 all on one machine and i can run defrag/diskclean and all my protection apps on all partitions from the XP install and it works fine...
Hope this helps...This is an interesting question.
I think, you should have two separate AV programs installed.
The main issue here is real-time protection, which you want to have running, when you're using particular OS.
Let's say, you have OS1, and OS2.
Your AV is installed on OS1, so I assume, when you boot to OS2, the real-time protection is gone.
Obviously on-demand scan will work for any partition, but real-time protection will not.

On my Vista, I have 4 other OSes installed on virtual partitions, and all of them have their own firewall, and AV.Thank you Both. Broni, I have the same thing with my other machine. I figured SINCE it as on another partition it wasnt PROVIDING real-time protection. I just didn't want it to interfere with the other (though I guess the other one isn't running anyways). Thank you!They won't interfere because they're not active at the same time.Whose real time protection is worth it ? ?What?...LOL