Hello again I'm going to tell you the steps i have made: 1) Winsetupfromusb with options: Auto format it with Fbinst, NTFS, Align Section "Add to USB DISK" Windows 2000/XP/2003 Setup Checked and the correct drive with an iso mounted inside the textbox Windows Vista / 7 ... Setup Checked and the correct drive with an iso mounted inside the textbox 2) Start the process 3) Try each installation - On Windows XP, when i started the second part of the installation it get hanged when the installation said "39 minutes left" - On Windows 7, it get hanged when the installation reached the Blue Screen of the installation beginning. It seems WinSetupfromUSB have a problem detecting the USB pendrive Is there another way to do this Multiboot? Thanks