hehe. you know,knoppix/knoppix file (700MB)is a compressed image. run this compressed image can caught the error. NOW,your BOOTCD can boot knoppix,Directory of *.ISO\knoppix: | |-- KNOPPIX | | |-- KNOPPIX (compressed image) | | |-- boot.img (boot floppy image) | | `-- (other files snipped) | `-- index.html `-- source `-- KNOPPIX (this directory can be chrooted into) |-- bin |-- boot |-- cdrom |-- dev |-- etc |-- floppy |-- home |-- initrd |-- lib |-- mnt |-- none |-- opt |-- proc |-- root |-- sbin |-- tmp -> /var/tmp |-- usr |-- var `-- vmlinuz -> boot/vmlinuz-2.4.22-xfs i'm sorry.my english is poor. you can get help from KNOPPIX.NET