DiskCopy is a user friendly disk/partition cloning tool.

DiskCopy has really cool features such as:

• MBR to GPT and GPT to MBR. You can chose the partition style of the target disk, it does not need to be the same as the source disk's.
• Always bootable. The target disk can be made bootable even if the source disk is not booting up.
• Partition selection. Copy only the partitions you select.
• Single partition cloning. Clone one partition directly to another, and optionally make it bootable.