Hi Jetman, wanted to say thx. Great Article you wrote here. I was able to integrate by now the following os on one DVD: Vista, XP, Knoppix, Knoppicillin (Linux Virus scan), Open Suse 10, Fedora (Live cd), Open Solaris 10, Gparted, Acronis Disk Director, Acronis True Image, Debian Squeeze CD1 (testing) and DSL. Tricky was the OpenSolaris integration because OpenSolaris needs the Rock Ridge Extensions to boot and the grub Bootloader. The problem was, that WinXP cant boot when i activate the -r switch in genisoimage. I read that the XP bootsector would be destroyed with Rock Ridge enabled. Dunno why or if i made another mistake. So i need a workaround to get both Open Solaris and XP to work. And the solution was Grub4Dos as it can directly start the NTLDR of xp without using the Bootsector via a chainload directive. The grub4dos package contains a file named grub.exe and this file is actually a linux kernel. So as i didnt know how to chainload other bootmanager via isolinux you can indirect start grub via isolinux with kernel grub.exe Then you have the ability to chainload via grub SETUPLDR.BIN from the i386 folder and this starts NTLDR. Thats it, and it works with Rock Ridge enabled. So you can start via the isolinux menu both WinXP and OpenSolaris via grub and both works with Rock Ridge enabled. JackCarver