A APM and GPT riddle

[sjs]

Thanks for the amazingly fast resonse as usual.

But what about The Riddle? Part 2 of my question? That is, how did it change from GPT->APM and how do I keep it from doing that again?

The proof that this disk was indeed GPT as of 2 weeks ago is that 2 weeks ago, I was able to use the System Restore DVDs and today I am not.

Last time I had to reformat the internal APM drive to GPT as well. So this is now the *second* the disk has been repartitioned as GPT (assuming they came GPT from the factory), and if I do it again today, it will be the third time!

Is there any known way of even of even doing that? diskutil does not even have the option of replacing a live partition map.


Tell me please, am I going crazy?
:-)

In the meanwhile, will reformat it again as GPT...