D Sledge

I have a Lenovo laptop running Windows 10, latest updates, all is well. I am trying to use clonezilla to get a backup of my laptop before upgrading to Windows 11. Clonezilla boots fine, allows me to select the external 2TB as the target but the bails because there is no source drive. Finally, I see what I'm suspecting is the issue. When Clonezilla starts it indicates sda is a RAID drive. I go into BIOS to change it and find Intel RST mode is on rather than AHCI. When trying to set AHCI I'm warned...