Hi. Firstly, there's a great tutorial on the topic, https://www.techspot.com/vb/topic116114.html, which describes why std installation won't run from ext usb hdd and how to make it work. Nevertheless, i still can't boot xp (sp2). i've succesfully completed first-stage install (dos-like), which transfered some sys files to usb hdd and written mbr to it also. after that, what i see - is a black screen only (i.e. pc freezes), though i can access boot menu (by pressing F8, i.e. boot process from usb hdd starts!). The hdd led doesn't turn off - so the usb bus isn't rebooted. What else can i do? p.s. enabling 'debug mode' or 'logging mode' from winxp boot menu doesn't create any output information also. p.p.s. i triple-quadruple-... checked every line from the tutorial.