How to make disk bootable?

[gils]

I installed Leo4all v2 on a disk, works fine after a bit of work, but the disk is too small (10Gb), so I find a bigger disk and partition it with a GUID Partition Table, (also tried MBR), then use Disk Utility to copy the data to the new drive. The problem is I can't boot to the new drive, I can start with the install DVD inserted and it will boot to the new drive, albeit slowly, but without the DVD it just sits at the prompt.

How do I install a bool loader that works, or edit GUID? I am not at this time dual booting, and have no wish to.

 

Thanks

 

Gil