RE : dual boot

[davidhk129]

I used to have Win 8 Pro ( retail upgrade version ) installed on a laptop.
I then install Win 10 TP over it. So right now, I have Win 10 TP as sole OS and it is shown in drive C:
Now if I decide to dual boot Win 8 Pro with Win 10, my Win 8 pro will be shown in a partition ( say drive E ) and it will be to the RIGHT of C:
I know how to shrink and setup a new partition etc.
I also know how to "delete volume" if I want out of dual boot. But I always did it by deleting partition which is to the RIGHT of C :
My question is this.......
If I want to remove Win 10 TP, How do I do it ?
Bear in mind Win 10 TP is on C drive, and Win 8 Pro is on E drive which is on the RIGHT of C.
How do I delete volume from a partition which is to the LEFT of E drive, and how do I add the volume back to E drive?

That "left" and "right" thing is unclear to me.

 

[davidhk129]

excerpt...... you can only extend a partition if it has unallocated space to the right of it on the same drive.

That is my dilemma.
My unallocated space would be on the LEFT.