Hey guys.

I have a Western Digital External HDD, and I just want to know if I can use my iAtkos DVD to install leopard onto it, and then choose it as a boot device.

But the only thing stopping me from actually trying it is I really don't want my laptop to have been modified.. I mean when I boot from the disk and install Leopard to my portable hdd.. I don't want my laptop changed.. Well in simpler words, I don't want anything installed to it..

Sorry if it sounded like a bit of a jumble, if you can't understand, just comment and I'll try word it better.. Thanks!