thank u for ur help guys. the thing is i have installed window 7 on my hp probook 4510s laptop and i want to install windows server 2003 in USB hard disk. so, is it possible to do that if i only configure the boise to boot from USB HDD?
Well there is two things:
1) Yes, it is possible. There is Microsoft application to create Live CD/USB. You need to install drivers, to system recognized your external drive as Storage MAS USB.
2) Performance will be awful.