Why won't bootable CDs work?

[IceBreaker]

Ghost: got the msg.

Can't attend 2 it 4 now - have started 2 huge file downloads through P2P (eDonkey, to be more precise), and these files have few sources, so I dare not disconnect and reboot right now (to test CD backup bootability), lest I fail to recover my current - and above normal - download rate upon reconnection.. Downloads should last at least half a day though.

However I'll check it out with CloneCD as soon as possible and will advise everyone of the test results.