You must protect at least one partition...

I’m getting this error when trying to install CTM (fresh Windows 7 install)

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I know from your screenshot, it shows only disk 1, not includes disk 0, so could you please open Disk Management and see what’s disk 0?

Best Regards,

It worked in the end. One partition had no drive letter, so i had to manually assing one, then CTM installed successfully.