Windows 10: I cloned old PC HDD, brand new now with old OS, how can update to windows 10 Pro OEM?

I cloned old PC HDD with windows 10 home to brand new PC that had Windows 10 Pro OEM, how do I update to Win 10 Pro OEM now?

:)

 

Cloned OS to SSD want to delete old OS on hdd

Not sure if this was answered(cant find 1) but recently cloned windows 10 from HDD to SSD. My HDD was setup as GPT and the partition was setup with the OS as almost the full 1tb size. I had and currently have alot of used space that i dont wanna lose if
it can be avoided. The whole cloning process was a pain having to move stuff to the ssd then partition the empty space on hdd the move stuff to the new partition until I had less than 200g with the OS still there so I can clone it onto ssd after cleaning
it. Os works fine(windows loads sooo much faster) old hdd works fine but wanna get rid of the old os on hdd without deleting anything else? Sorry so long and sadly I merged the partitions back to 1.

 

New OEM Windows Pro and old OEM Home

I have Windows 10 Home (OEM 8.1) and I need Windows 10 Pro like second OS on another disks on one laptop.

May I activate another (new) OEM key for Windows Pro? Or it will be blocking during activation because I have another OEM on this device and in my case I must buy ESD Licence to install Windows 10 Pro?

History (IMPORTANT!!!):

I bought Asus laptop few years ago. It was with Windows 8.1 Home Edition OEM License. When Windows 10 was released, I had free upgrade.

Now I need to reinstall Windows 10 (with upgrade to Pro) on new SSD in this laptop. And I have a problems:

1. I lost my sticker with OEM key.

2. I lost my old Microsoft account and I can't to restore it, because mail server with my mail account that was connected with Microsoft account is not available, it was off three years ago and I don't change my email in old Microsoft account.

That's why i can't use my old OEM for new installation and can't upgrade to Pro from Microsoft account.

 

Cloning OEM Windows 10 Pro to OEM Windows 10 Pro

I have a few new PC's that I purchased off Newegg for a great price. All are the same make and model with identical specs and Windows 10 Pro OS. I want to run updates and install programs on one of the machines, and then clone the first machine using
Clonezilla and then add that cloned image to the other 3 machines. Each PC has it's own specific OEM activation key. Can I add the cloned image to the other 3 PC's and then activate windows with the key originally assigned to the PC? Each PC will have it's
own Windows 10 OEM activation key.