[mythtv-users] How to tell whether MythBuntu installation is 64-bit or 32-bit?

[Mark Perkins]

> For a 64-bit install, you want to download the amd64 .iso file.  If
> you have not gone too far with your existing setup, I would recommend
> starting again with a 64-bit install.  There is now much more support
> for 64-bit than 32-bit and using 64-bit avoids some nasty problems,
> such as running out of a certain type of address space when you add a
> new tuner card.
> _______________________________________________
Can I have some more info on this issue please? I have a 32bit system that I have just added two more physical tuners to (now 6 physical + 4 extra virtual tuners per physical means 30 tuners total).

Doesn't 64bit OS require hardware that supports 64bit?