kernel upgrade from FC5 to FC6

[Antonio M]

I upgraded my first machine this afternoon.
When I re-started the machine I had only one kernel installed while in
FC5   I had 4 kernels installed (the last two as standard and SMP).
Is it correct that Fedora deleted all old kernels that I had in FC5??
I have some doubt because if the only installed kernel should not work
I have no choice...furthermore I need to have a choice when I will
upgrade another machine that is booted from a CD
Any comment??

Tnx