After formatting the NTFS volume, the new version installed fine and also activated with Win10 Home license. Since the system was relatively unused, I decided to download a fresh Win10 2004 ISO and reinstall the system. So fast forward today, I was trying to update the system to version 2004 when the update failed multiple times and eventually resulting in a BSoD with Windows kernel heap corruption error or something like that.

Much to my surprise the activator accepted the Win7 key and upgraded my system to Win10 Pro.

Anyway, I was curious to see, if I can still upgrade my Windows to Pro since I had a genuine Win7 Pro key that I used on another device which is no longer in use. I reinstalled Win10 to an empty 1TB partition from a v1909 ISO I downloaded from Microsoft and the device successfully activated as Win10 Home (product key was probably stored in BIOS). I removed the SSD and replaced the HDD with a 2TB that I'm using for dual booting. Hi, I have some questions about Windows 10 activation.Ībout a year ago I got a new laptop with 1TB HDD and 128GB SSD with Win10 Home.

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