What are the differences between the "Copy Disk" command and the "Find and Copy OS" command?


I own a copy of Hard Disk Manager 17.4, which I installed on a Lenovo Thinkpad T480 running Windows 10 (1903). The T480 has a 500 GB mechanical hard disk drive installed. I connected a 500 GB M.2 SSD to the T480 using a USB-C enclosure. I ran the "Copy Disk" command (to copy the mechanical HDD inside the T480 to the SSD inside the USB enclosure), which completed without any error messages. I ran this command with the options selected to "keep disk layout" and "startup from the destination disk." However, I did not run the "Find and Copy OS" command. After doing this, I shut down, removed the mechanical HDD and replaced it with the SSD. However, the system would not boot from the SSD.

Is there a material difference between the "Copy Disk" command and the "Find and Copy OS" command? Do I need to run both to clone my existing HDD? Or should I run only the "Find and Copy OS" command to clone the existing HDD and make the SSD bootable?

I have read the manual (http://download.paragon-software.com...Manager_17.pdf) searching for the answers to the questions above, but it is not clear to me. The only reference to "Copy Disk" in the manual is in the section on "Migrating VM from VMware vSphere to Microsoft Hyper-v.

I have been a Paragon user for over ten years. I've owned at least a half dozen predecessors of HDM 17. I have to say that the user interface in previous versions might not have been as pretty, but they sure were clearer and free of ambiguity.