Is there an "illegal" UBCD? I only know about the real and obviously legal one: http://ultimatebootcd.com/ @Keyboarder You can use UBCD as a .iso. Add a line to your current BOOT.INI on the XP stick: Add to root of the XP stick (from latest grub4dos - right now it is already inside the UBCD linked below): grldr menu.lst And: the UBCD .iso, say in /images/ubcd5.iso Basically you need an entry in menu.lst similar to this: title Ultimate Boot CD map /images/ubcd5.iso (hd32) map --hook chainloader (hd32) Get latest UBCD with grub4dos support: http://ultimatebootcd.com/forums/viewtopic.php?t=2131 Read some basics about grub4dos from here: http://diddy.boot-land.net/grub4dos/Grub4dos.htm http://www.boot-land.net/forums/index.php?showforum=66 Check for newer grub4dos here: http://nufans.net/grub4dos/ jaclaz Thanks ! I will try that this evening I don't understand... How can I do ?