You can select the source disk on "Select source disk" page and select the destination disk on "Select destination disk" page.
The "Select source disk" page and "Select destination disk" page is very similar. When selecting a source or destination disk, you see the devices detected by Disk Copy in the disk list view. The disk panel control above the disk list view shows a graphic layout of the currently selected disk, while the information field below the disk list view shows more details.
Select the desired hard disk. Confirm your selection by pressing [Next] button and go to the next step.
Note: Since source and destination must not overlap, the already selected source disk is deactivated when selecting the destination disk. The partition items are deactivated as we need a disk here.