Dietmar

Hi, I just make a nice hack. I get a lot of Arduino nano for 67 Cent from China. They work under Win10 but not under XP SP3, "Unknown USB device". I use the Arduino IDE ver. 1.8.9 portable, means no installation. It has the exotic USB serial VID_0843&PID_5740. So, I take the win7 driver STM32_vcp_driver.zip from STMicroelectronics which has funny VID_0483&PID_5740. There I edit just the stmcdc.inf file only at this part ;------------------------------------------------------------------------------ ; VID/PID Settings ;------------------------------------------------------------------------------ [DeviceList.NT] %DESCRIPTION%=DriverInstall,USB\VID_0843&PID_5740 [DeviceList.NTamd64] %DESCRIPTION%=DriverInstall,USB\VID_0843&PID_5740 Right click on this modded stmcdc.inf "install", and voila, this Arduino nano clone from China works perfect under XP SP3 Dietmar

@UsefulAGKHelper Here I put W2003_tools_update.7z good luck Dietmar https://files.catbox.moe/7wrcnc.7z

@reboot12 Make some tests with disable and enable the Microsoft UAA drivers in System Devices. I remember, that I had the same problem and the admin @Dave-H here also with Baytrail Flex 10 and XP and sound Dietmar

@reboot12 This can be a problem with a driver, that appears double. Make a try to disable really all. And then install your wished sound card and look what happens. With csmwrap I had the problem, that some parts of memory are occupied twice Dietmar

@reboot12 Here it is, good luck Dietmar https://www.sendspace.com/file/2kr246

@reboot12 Hi, I extracted your Bios but I dont know, where to upload it Dietmar

@reboot12 I still do not understand, why now you get the latest Source files from csmwrap.efi . Is it, because you connect now to another server via git clone https://github.com/FlyGoat/CSMWrap.git --recursive Dietmar

@reboot12 For me, this old version 1.1.0-12 is crazy. I do not understand, why they dont update their Sources Dietmar PS: We can make a try, with copy and paste the updated files into the install folders in Ubuntu, under CSMWrap. This should give a version, that is better than 1.2.1. Important is, also to compile SeaBios each time new.

Tutorial, how to compile a working csmwrap.efi dietmar.stoelting@t-online.de June 2025 1.) Install Ubuntu 24.04.2 LTS 2.) Type this at the command line from Ubuntu sudo apt update sudo apt install -y build-essential nasm git curl xxd git clone https://github.com/FlyGoat/CSMWrap.git --recursive cd CSMWrap make seabios make

@reboot12 Do you have an idea, how to come back to the UEFI shell, after using u7.efi Dietmar

@reboot12 Oh waooh, this is my idea in perfection. I installed only the driver for the GT 730, because the other graphik card Radeon 240 was never displayed in Device Manager, because of the resources conflict on PCI-Bus 1 (it is on Arrow Lake board the second PCI-Bus). The result from you means, that now it should be possible, to install XP SP3 on really every compi, because via this way and the loaded SeaBios all conflicts can be overcome Dietmar PS: And on really crazy compis, which until now does not like to boot XP SP3, no matter if it has CSM in Bios or not, you can use csmwrap.efi and voila..

@reboot12 You need this modded files for XP SP3. https://files.catbox.moe/x4mk0f.zip In Bios of the board disable VT-d. You need also a graphiccard that gives you 4 bit color, I use Radeon 240 and the Nvidia GT 730 Dietmar PS: At the moment I have a lot of work for school. A complete Tutorial for how to boot XP SP3 on an Arrow Lake board I write on next weekend.

@reboot12 Thanks for link to efirom.exe I just download. There really seems to be no tool at all, that can work from the UEFI shell, emulating INT10h and load the Legacy VGA Option Rom vga.bin to memory at C0000. And after this work, return to the UEFI shell. I think, csmwrap.efi tries to do exact this and it would be interesting to watch its doing while work. You can see the Ven_&Dev_ number of your graphic card just before the start of SeaBios, but this seems not to be enough, what csmwrap.efi is doing until this time and because ot this, you get black screen or SeaBios is never loaded Dietmar

Can efirom been started from the UEFI shell? Please link for download efirom Dietmar

@UsefulAGKHelper The PAE works in XP SP3. The problem is with the second PCI-Bus 1, first introduced by Intel for the Arrow Lake. Before, there exist only one PCI-Bus. Now XP SP3 cant split its resources for both busses. A modd in DSDT does not help, to put all to a single PCI-bus. And on PCI-Bus 1 hangs slot 1 with graphic card Dietmar