I'd prepared bootable USB flash drive with Windows XP using USB_MultiBoot.cmd according to these instructions (Steps 1, 2 and 3). It works perfectly on some boxes (Samsung laptop, HP dx2400 PC) and doesn't work at all on some HP laptops (HP 2140 Mini-Note, HP nx9420 laptop, HP nx6125 laptop). I cannot boot this USB drive no matter the BIOS settings. I tried all possible combinations. At the same time I was able to boot USB drives with Hiren's Boot CD or USB Reanimator on these HP laptops. I've tried different USB drives (Lexar, HP, Samsung). I've updated BIOS FW on all laptops. Nothing helped Does anyone had similar issues? Any workaround?