From:jaclaz Why do you want to make it more difficult than needed? i dont want to make it more difficult, i just want put ubuntu in a folder named ubuntu, because my root of my USB drive is already a mess. (is so difficult to put the ubuntu in a folder ?) RE-read this: http://www.msfn.org/board/index.php?showtopic=124169 i read it again, so the right code is this one -> ? title INSTALL Ubuntu root (hd0,0) kernel /casper/vmlinuz file=/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash -- initrd=/casper/initrd.gz and where i must put it ? in isolinux.cfg, syslinux.cfg,menu.lst ? (i guess in menu.lst?) and where must be this file ? in the root ? In other words, you already boot to grub4dos, grub4dos can boot directly a Linux kernel, thus introducing a level of complexity by loading another loader is unneeded. ok great, and grub4dos is menu.lst, & syslinux that it ?