Windows 10: win10pro upgrade

I purchased .Windows 10pro Upgrade from Win home to Windows 10 pro . It Sowing "We don't update your PC Error code 0X0.

:)

 

dual boot, dual ssd, win10pro(win8.1pro upgrade) and win7ult

I have been using Win7ult for years on a 128gb ssd.

I do NOT want win10pro to upgrade my old win7ult.

in honor of Win10 I bought an extra win8.1pro key

I will install win8.1pro on a second ssd 480gb ssd,

July 30th I will upgrade that win.8.1pro to win10pro

so then I want win10pro to give me a bootload choice

that lets me boot either that win10pro 480gb ssd

or my seperate old win7ult 128gb ssd.

obviously my mobo bios will be set

to boot the win10pro 480gb ssd first.

I have read that win10pro has a bootload options,

but it only seems to be during an upgrade, where

you can install win10pro to a seperate partition

if you don't want it upgrading your old win7/8.

but that's NOT what i want to do, so can anyone

link me to something the explains how I can boot

the way I described earlier.

 

preparing to upgrade


You can try following this guide. I suggest either step 4 or step 7.

 

Video card or RAM need upgrading?

Memtest: no errors after 10 hrs.
I'm going to perform the Primetest, later on. Get back to you on that.
I'm going to take it step by step, guys. I need to find the problem with this current computer. I might have to upgrade some components, so that it is still runnable. As for the new one, yes....i will build on it later. I need to find something decent 'gaming experience', all suggestions appreciated. THanks.