deSSy2724 has a thread about this over at win-raid forums, called
Windows XP 32-Bit and Server 2003 32-Bit on Modern Hardware
It is an interesting read, and they also answer questions.
For the most part, what I've found that worked, was using two PCIe cards, namely,
1. An older PCIe SATA Card, with the JMB 363 chipset.
Connect both your Optical Drive and OS Drive to it.
Disable all SATA and USB Ports in BIOS.
Disable onboard LAN and Audio in BIOS.
Use nLite to slipstream in the SATA Card's XP Driver.
Use a motherboard that has at least one PS/2 Port, for your Keyboard and Mouse.
If you only have one PS/2 Port, Start the XP install with the Keyboard.
You'll switch to the mouse once you get to the desktop.
Remember that it's bad (and it won't work) to try connecting or disconnecting PS/2 devices while the computer is on.
2. Just about any standard PCIe USB 2.0 card.
DO not put this into a PCIe slot until later.
In my experience, no USB ports worked during installation, not even the 2.0's that come with the motherboard, nor the card.
I had to remove the USB 2.0 card to complete installation.
After you make it to the windows XP desktop, you're gonna wanna:
Turn off the computer.
Clone your HDD with Arconis, or some other program that does similar things.
Put the USB 2.0 Card in a free PCIe slot.
Swap your PS/2 Keyboard for a Mouse.
Ok, turn your computer back on, and see if it installs drivers for your USB 2.0 card auto-magically.
If so, feel free to plug in a USB Keyboard. If not, that's ok, it should start working later.
Either way, next, you should restart your PC, enter the BIOS, and re-enable all of your USB Ports,
All of them: 2.0, 3.0 and 3.1 and 3.2.
Save changes and reboot.
Swap your XP Install disk for a CD-R with drivers for the onboard USB Ports.
Fernando has a thread up on the win-raid forum called
USB 3.0/3.1 Drivers (original and modded)
You're gonna want to click the Spoiler Tag to expand the "A. AMD USB 3.0/3.1 Drivers" group.
Look for the ones that mention XP, specifically: >32/64bit AMD USB 3.1 Controller and Hub Drivers v1.0.5.3 WHQL<
You might have some luck with the B. ASMedia USB 3.0/3.1 Drivers as well, but I didn't.
Burn the USB Drivers you got to a CD-R with another computer, and try installing them in your XP computer by going to Device Manager and updating the USB Hubs manually.
If your USB 2.0 Add-in Card did not auto-magically start working, be sure to remove it before installing the USB 3.0/3.1 drivers.
Okay, after you have some working Mobo USB Ports, shut down again and install the USB 2.0 card (if it didn't work before).
Boot XP and test all of your usb ports with a keyboard.
You'll need the mouse to be connected to a PS/2 port, so you can easily click through the prompts.
Make notes.
So, at this point, some of your Mobo's USB 3.0 or 3.1 ports will still not work, but all of your 2.0 ports should be working.
Shut down your XP PC yet again, and remove the 2.0 card.
Remove any mice and keyboards that aren't your normal ones, and connect your normal ones.
Store any PS/2 input devices, you don't normally use, in a safe place.
Turn your computer back on.
Enter your mobo's BIOS.
Re enable all of the other onboard devices you disabled (LAN, Audio, SATA, WiFi, and so on)
Now comes the fun part.
You get to hunt down drivers for your onboard devices, and your graphics card!
Oh, by the way, none of the Ryzen APUs have drivers, and from what I understand, the generic VGA one that comes with XP doesn't work either. You'll need a dedicated GPU. Also, you can't even install any OS other than Win 10 or (Linux) with an APU, even if you add in a dedicated graphics card.
Future readers, check the date of this post. If it's been a while, someone might have figured out a work-around, keep searching, and let us know if you find something good.
Anywho, try installing all the stuff. Some stuff won't work, but most of it should.
You may wanna also ask for the x86 XP compatible AMD Ryzen STORAHCI driver, in the thread started by deSSy2724.
I haven't tried getting NVMes to work, I just used a normal 2.5" SATA SSD.
Before installing the x86 XP compatible AMD Ryzen STORAHCI driver, be sure to Clone your OS Drive!
Anywho, you can test the Onboard SATA Ports with your optical drive or another HDD or something.
Be aware that it is probably safer to not connect any SATA Devices while your computer is on, though.
Good luck!
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