If you want to use a Portable OS, then create a Windows to Go version of Windows 11 with the help of Rufus and the steps mentioned here.

How to make a bootable USB drive If you're trying to install a new operating system or flash your BIOS, you're going to need a bootable USB drive - here's how to make one.

Prefer not to use Rufus? You can also use the official Windows USB media creation tool to create a bootable Windows 11 22H2 installer.

How to create a macOS Monterey USB Install drive for quick and easy installations of Apple's latest operating system for Mac.

I'm trying to apply an individual BIOS update to many servers. In the old days, I'd use Rufus to make a USB stick bootable, copy the BIOS update file to it, walk to the server room, plug it in ...