Yes Linux will load and boot from an IntelMac... you can also set it up to dualboot Linux/OSX
Your only problem "may" be if your Macbook is a 3.1 or 4.1 model... NOT a major problem... These models can be a bit "iffy" about booting from non-EFI partitions, so you "may" need to install
rEFIt, to a small HFS+ partition and Linux to native partition(s), so the Macbook boots from the rEFIt partition which allows you too select Linux as the boot OS.
Ubuntu, Mint, or Debian (maybe others too) will probably work without rEFIt, but there will be a delay in the boot process of around 20secs where the Macbook waits for you to insert an HFS+ CD before continuing and booting to Linux.
More info can be found here:
http://regebro.wordpress.com/2008/11/16/installing-linux-on-a-macbook-without-os-x/rEFIt can be found here:
http://refit.sourceforge.net/If you decide to set it up as a Linux/OSX dualboot system and want access to the OSX partition from inside Linux, you will need to install the following packages to Linux (usually available in the package manager)
hfsplus
hfsutils
hfsprogsI've personally put Ubuntu (karmic and lucid) and Mint (8 and 9) on an IntelMac (iMac 20) without the need for rEFIt... it just worked... theoretically this should work for ANY IntelMac, but if you have any problems or don't want the 20sec delay, rEFIt is the answer.
BTW, the above only applies to loading Linux to the "internal" hard drive... Getting Linux to boot from an external USB drive is a different story... IntelMacs can only boot EFI partitions from a USB drive... when they switch to (legacy) BIOS mode they no longer recognise USB drives... again rEFIt may come to the rescue.
For peace of mind though, it might be a good idea to make sure you have your OSX-Leopard disk, and that it is working
