Q: Can I use a portable XP installation on a Mac? A: Yes, you can use a portable XP installation on a Mac, as long as you have a compatible USB drive and have configured your Mac to boot from the USB drive.
Thus, "Windows XP Portable" refers to to: windows xp portable
Restart your computer and enter the (usually F12, F2, or Del). Select your USB drive as the primary boot device. If successful, you’ll see the familiar Windows XP loading screen! A Quick Warning on Security Q: Can I use a portable XP installation on a Mac
This is a legal minefield. I cannot provide links to pre-made ISOs because most violate Microsoft's EULA. windows xp portable
This tool is the gold standard for creating multi-boot USB drives, including XP.