Qion, I guess it must be a totally alien concept to you about the simple fact that some OEM versions of Windows are only installable on the designated machine. There's Dell, HP/Compaq, Gateway, et al, OEM versions of Windows that will only install on those machines.
About the same as it will be for the upcoming Apple OSX x86 that will install only on Apple hardware.
It's nothing new. It's nothing amazing. It's nothing hard to grasp. It's just amazing that you'd try to install a HP OEM on any other machine. That's just plain foolish.
My dealings with HP is only at server level, HP-UX and Win2k3, and I can't say one bad thing about them. Dell, same way. My Latitude notebook was a brick - in weight and build quality - that didn't get destroyed as easily as my iBook... but I'm rough on those things anyway. I don't, however, like Gateway. Not one bit. And blowing out a partition in any OS is very simple. Nothing mystic about it.
*dangles chicken head necklace over keyboad*
Making a big deal out of something that's very typical across the board for all computers...