Persistent install of Windows 7 (or XP) on a USB stick
is this possible? So I move to another computer and during the boot process I boot the OS from my USB stick. I did not found any tutorial on Google.
you can do it, but it is not supported and is very complex to setup.
This question is similar to Can I install Windows OS (Windows 7) on a removable USB hard drive?
With Windows 7 SP1, there is an easier way to install Windows 7 to a USB Hard Disk or USB Flash Drive.
This was discovered by cdob at Reboot http://reboot.pro/topic/14186-usb-hdd-boot-and-windows-7-sp1/?p=127587
It boils down to two registry keys, which i think are present in Windows 8 to enable Windows To Go feature. I guess this feature was present in Windows 7, but was never activated.
You can install Windows 7 to a USB Hard Disk or Flash Drive using a Tool called WinNTSetup which I have mentioned here Is there an equivalent to Windows To Go for personal use? This tool uses the above registry settings to enable Windows To Go in Windows 7
This tool is easy to use and you quickly install Windows 7 your USB Hard Disk. This tool also allows to create VHD (Virtual Hard Disk) on your USB Drive and install Windows 7 to the VHD on the USB Drive.
This installation will be persistent.
More information in the below links.