Yes, it's true. That's the single biggest disadvantage of an OEM
version, and the reason I almost always recommend against them for
anyone.
I have six Gateway M465 laptops (the most of any one model, but some
others come close). They all have OEM XP Pro licenses. And I have done
for testing purposes and sometimes for recovery measures, taken one
drive and swapped it with another M465 machine.
While most people believe making backups of your software is important.
I go an extra step. As I believe having hardware backups are just as
important.
Say for example this laptop that I am on right now suddenly starts
smoking or something and powers off. And it refuses to power up or
anything. Well a software backup will do me zero good if it isn't the
hard drive or software related, now will it?
Now I can just throw this hard drive into another M465 machine and I am
back and running once again in seconds. No big deal and figure out what
went wrong with the other one later. Plus I have lots of parts to swap
so I could figure out what really failed later as well.
It even helps when something goes wrong with the software too. Say
something goofy happens and my video display starts to act up. Is it
software or hardware? Who knows for sure. But swapping hard drives
between two machines will tell me in a heart beat, now won't it?
Alias heard me say this publicly on the newsgroups before one time and
claimed he (I think of him as a he anyway) turned me into Microsoft.
Although I heard nothing about it from Microsoft. I am sure they know
who I am and all.
Since under the OEM license you are allowed to replace virtually
anything and it is still legal on the OEM machine. Microsoft has never
defined how far you can go except to say some part must remain. Although
while never legally clear, this could even mean one screw of the
original machine is the only thing that is left.