While booting, Clonezilla halts and I see a message like "Debian, BOOT FAILED".
It seems like it's trying to mount /dev/scd0, but it's not there (probably because we've booted from USB? not sure..)
I don't have a bootable Clonezilla disk here, otherwise I'd be able to give more information.
If more information is needed, please leave a message.