Override cmd Diskpart won't work How do i clear the hard drive and clean install different OS?

[b-rice]

Current installed oem OS is Windows 10 on a hp notebook model 14bw012nr that I don't use much. I want to wipe the drive completely and fresh install Windows XP 64-bit to run a older progam  I'm looking for easiest way to do this? Diskpart seems to be the way to go, but my knowlegde is limited to what I'm trying to do. Even override commands as Admin in cmd pmt to clean unmount remove unassign doesn't work as I've seen on videos. I can't remove the boot start-up assigned to partition. I'm assuming there is an easier way than having to set up vdisk or part the drive and load XP before it will allow boot start-up re-assignment. I've also tried to run installation of  XP and set-up stops because the drivers are so far off that stops install. How do I uninstall windows 10 and or re-format hard drive for fresh install of XP? 

I know I've stated my knowlegde is limited but please limit any extra advice telling me other things like- Part the drive dual boot, vitual box, buy older laptop with XP installed.

[WAWood]

@b-rice

First off, if you are using a command window from inside Windows, you are not going to be able to use Diskpart to affect the same partition because it is locked.  You would have to boot from a disk or USB stick and run the command from there.

Second, this is a Win10 PC -- so I SERIOUSLY doubt you are going to find any drivers that will work with XP. So, even you do reformat the drive, and force the installation of XP, I would be surprised if any of the hardware works after a reboot.

That said, there are folks on this forum that know a lot more about older drivers, so they may be able to provide some help in this.