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Your Windows 10 PC will soon be 'junk' - users told to resist Microsoft deadline
(www.express.co.uk)
This is a most excellent place for technology news and articles.
Uefi isn't the push, the push is tpm 2.0, which I think is a much much larger percentage of "incompatibilities". tpm allows for drm that is much harder to bypass, since the random number generator operates securely in hardware. It's for their benefit not yours.
Precisely why I'm in no rush to "upgrade".