While it's possible to install Windows XP onto an SDHC card or a USB flash drive, odds are your Eee PC won't be happy running XP that way. Windows will boot faster and have fewer driver issues if you install it on your built-in memory. But in order to do that, you'll have to wipe out the cutsom Xandros distribution that comes with your Eee PC. You can always restore it using the restore DVD. But that doesn't help if you want to be able to switch back and forth between Xandros and Windows without losing data.

AaronL at the Eee User forums reports that he's found another solution: move your Xandros installation onto a flash drive. The process isn't for the feint of heart. For example, it involves rebuilding your kernel. But the end result is a working Eee PC that can run Windows from the internal solid state disk and Xandros from a USB flash drive. AaronL says it does take longer to boot from an external flash drive, so say goodbye to your 20 second startup times. But just think how impressed your friends will be when you show them that you can dual boot a tiny PC with just 4GB of internal storage space. (Your friends really need to get a life. Or maybe I do).