This tutorial?
If you are looking for the Windows 11 Clean install tutorial, you can find that here: Windows 11 Clean install tutorial (Click here) Otherwise, welcome to the Windows 10 Clean install tutorial This tutorial is intended to help you, step by step, to perform a clean install of Windows...
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In the context of that, it makes absolute sense to have only ONE drive connected when you do this install.
In your slightly more complex configuration, with a desired dualboot, there are two ways to do it.
- The older install first, then the 2nd, with both drives connected. This gives you a fancy boot menu, to choose which OS. However...if you ever remove the first drive, the second one will not boot. It has no boot partition.
- Do each completely separate. This requires interrupting the boot process to choose other than the default. But, if either drive dies or is removed, the other is 100% viable and bootable on its own.
I still have no idea where Google comes into this install. Or Microsoft and 'personal information'.