Yes, I will take it as a lesson and yes I am yelling because I am pissed... ;-)
And it seems like also stupid, because I go to:
click on "Download instructions"
click on "Mirrors 0710 beta 3"
And then I did choose the DVD version, looked to me like the best choice...
So, no text about deleting the HD... But doesn't matter, I am already very happy, that you will add it to the next release. You will help saving some time to other users like me :-)