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Windows 8 installation warning

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I tried to do an "in place" update from Windows 7 to Windows 8 last week, rather than a clean install.

After an hour or so of chugging away, and after several reboots, the installation came to the end.

It failed at the final hurdle with a BSOD error caused by tdrpman.sys.

Google reveals this to be an Acronis file.

So, it seems that I have to uninstall Acronis 2013 before I can install Windows 8.

Not what I wanted to do. And pity it has to go to the bitter end before warning me.

Reading around here I see no mention of this, only of people not being able to install Acronis in Windows 8. So I thought it worth posting a warning.

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You shouldn't have to uninstall 2013 in order to upgrade your OS to W8.

Don't uninstall, you can disable the Try & Decide service in Windows Services, or if you had T&D running, stop T&D as this would cause a BSOD.

I have never knowingly used T&D.

How do I ensure that it is turned off? It isn't obvious in any settings I have looked at.

Is it another of those infuriating Acronics things that always sets the wrong behaviour as the default? Like the one that prevents Windows from shutting down?

Open up Windows Services.msc and disable the T&D service.

Not enabled in the first place.

At least, not that I can find.

All I see are:

Acronis Nonstop Backup Service
Acronis Scheduler2 Service
Acronis Sync Agent Service

That also explains why, another baffling one, Acronis insists on using its own scheduler while most of my software plugs into Windows scheduler.