New
#81
I note that the System Reserved partition only has a letter assigned to it when I look at my DM from the Clean Install partition. I didn't put it there - Windows must have a reason to place it there. Until I know the reason, I would hesitate removing that partition.
Also, I assume that, to remove the old W10 OS, all I have to do is format that partition? Doesn't the MBR have to be changed also? Or is this accomplished by Windows?
Note that I removed 'Active' from the Data drive.