In the setup, 4TB of the 8TB "D" drive below was allocated to becoming Hyper-V XP.
That should be plenty but I was afraid virtual machine might use virtual memory within itself.
In over my head here.
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(cont.)
Ok, I also need an Operating System.
Hyper-V includes links to temporary Win10 and Umbutu but I need XP back.
(I also own a old legal registered XP computer which would be preferred but it would require burning an .ISO to transfer. etc.)
There is a free legal XP mode available here:
https://superuser.com/questions/1230652/get-official-windows-xp-virtual-machine-for-hyper-v
I unzipped it a couple times with 7zip, per instructions. A bit quirky to use.
I added the dot to make the .VHD executable file.
So far so good.
But then I accidentally double-clicked the .VHD because instruction said to 'load' it.
This is needed to change sysprep which allows XP to be unlocked and transferable to new different hardware.
It created a new ~1.3GB virtual 'G' drive which contains all the WindowsXP files, as seen on the left below.
Not sure where this is located.
The Hyper-V file
did grow to about 7.8GB though but the few files within have unrecognizable names. Just strings.
Finally, when I went to 'Quick Create' XP this error was returned.
At this point I am stuck.