This tutorial will be of use to those familiar with TeraByte software and a pigs breakfast to non users. I'll keep it brief but if you have questions, please ask. Create an IFW image of the Win10 partition on the source GPT disk. UEFI system. You don't need to backup other partitions. Win10 only. In the target computer with a Win10 OS, install BootIt UEFI (BIU). A Boot Item will be created. Edit the Boot File and confirm you see \EFI\Microsoft.001\Boot\bootmgfw.efi The current Win10 will boot from this item. Use Partition Work in BIU to create Free Space for the new Win10 restore. The Free Space can be on any disk. Boot IFL and restore the Win10 image you just created. In Options, leave the defaults and also put a tick in "Change GUID". In the New Name field, give it a sensible name, different from your current Win10. DO NOT REBOOT. In the dock, click OSD Tool, Physical Drive, choose the just restored Win10, Remove installed drivers, Remove all drivers. If this computer has a NVMe drive, Install default NVM Express Controller from OSD Tool. Still in IFL, in the dock, click TBOSDT. At the prompt enter... run fixboot.tbs Choose the just restored Win10, Confirm, Setup a Boot Configuration in partition (EFI System Partition), Setup a full configuration, ignore the Select boot options... screen and choose Exit. Now you can reboot, but into BIU. Press Esc when you see the Boot Menu. This puts you on the BIU desktop. Click Boot Edit, Add, fill in Identity (eg copied Win10), the HD will be the one containing the ESP, Boot field is EFI System Partition. In Boot File, click Browse and find Microsoft.002, Boot, bootmgfw.efi In Boot File you should see \EFI\Microsoft.002\Boot\bootmgfw.efi Put a tick in Rename Directory, click OK. OK again. Boot Edit again, select the original Win10 item, Edit, in GPT Details hide the new Win10 partition. OK Select the new Win10 item, Edit, in GPT Details hide the old Win10 partition. OK. OK again. Reboot On the Boot Menu, select the new Win10 and click Boot. You will briefly see Getting Devices Ready and then the Win10 desktop. Do Windows Update. This will fix the screen resolution and install drivers. Uninstall any software specific to the other computer. eg video drivers. Reboot. If new Win10 boots instead of BIU, boot into the BIOS on the next occasion and select to boot from BootIt UEFI. This reactivates BIU. New Win10 will need more work. eg changing drive letters if needed, etc. I can do the entire clone procedure in just over 10 minutes. Expect to take longer. Edit... If the original Win10 is activated, the new Win10 will also be activated.