[CentOS] transfer data from one hard drive to another

Hello I have an OS installation and data on a 40 gb drive that I would like to image to a 80 gb drive. I don't care if the resulting partition layout on the new drive is only 40 gb making me lose space. I just want to move everything from the older drive because I think it's failing. I have looked at partimage and mondo rescue as imaging solutions but both deal with partitions. CAn someone plz point me to a howto that shows how to image the entire drive incuding mbr, partiton table and data all with one program? I am hoping to boot with a CD to do this while having both drives plugged in. So I think something like knoppix? TIA!