A real Windows XP Embedded image for Arium will not be a standard ISO. It might be:

In an era before Windows 10/11, builds like Arium 3005 represented a "custom shop" approach to computing. It was made by enthusiasts, for enthusiasts—all in the French language, creating a tight-knit community of users who shared tips on forums like GNT or Arium.cc .

The Arium 3005 edition was recognized for its lightweight footprint and performance-oriented tweaks.

If you have the hardware to support it and a legitimate use case, this 660 MB version of Windows XP is a testament to how lightweight and efficient the original Windows NT kernel can be when stripped of its modern baggage.

[Unattended] OemPreinstall=Yes DriverSigningPolicy=Ignore NonDriverSigningPolicy=Ignore UpdateUPHAL="C:\Arium3005\hal_acpi_up.dll" TargetPath=\WINDOWS-DISABLE-DFL

If you are determined to find it, your best bet is to: