How can I upgrade from OS X 10.4.11?

If you're using a G3, you can't.

If you're using a G4 or G5, purchase Mac OS X 10.5 on DVD.

If you're using an Intel Mac, purchase Mac OS X 10.6 on DVD, or get it from Apple for free if you're a paid MobileMe member.

Intel Macs with a Core 2 Duo or better CPU can run Lion. This is available from the Mac App Store in 10.6.6 and newer or on an USB flash drive.

(66610)

Yes, it does, unless you're a paid MobileMe member. Installing Mac OS X 10.5 is technically doable, but that OS is harder to find and much more expensive than Mac OS X 10.6.

(66611)

Snow Leopard/10.6.x Requirements...

General requirements

* Mac computer with an Intel processor

* 1GB of memory (I say 2GB at least)

* 5GB of available disk space (I say 30GB at least)

* DVD drive for installation

* Some features require a compatible Internet service provider; fees may apply.

* Some features require Apple’s MobileMe service; fees and terms apply.

Which apps work with Mac OS X 10.6?...

http://snowleopard.wikidot.com/

It looks like they do still have it:

http://store.apple.com/us/product/MC573Z/A?fnode=MTY1NDAzOA

And it's been reported that if you have a MobileMe account Apple will send one free.

If it's a core Duo & not a Core2Duo, then it'll only run in 32 bit mode.

can you upgrade from 10.4.11 to 10.6? 2.16 GHz Intel Core 2 Duo