Hi, Gianmarco wrote: > maybe you are telling me that i have to use grub to start the DVD ?
No. GRUB is the bootloader in the ISO which gets started by EFI if it is not in legacy emulation mode and thus would start the ISOLINUX bootloader which is in the ISO too. > - I set the bios with the boot from DVD. I assume that the newer machine has EFI as firmware. So it offers the DVD to you in its boot menue ? In my ASUS machine's EFI i then double click the item and GRUB gets started by the EFI firmware. > - the system went straight into the pre-installed OS boot. It shouldn't do this. If it offers the DVD as boot opportunity then it should start one of the bootloader images which are mentioned in the El Torito catalog of the ISO. If the firmware believes to be a legacy BIOS (or emulates it) then it should start the ISOLINUX boot program. If it believes to be native EFI, then it should look into the boot image for EFI, which is actually a FAT filesystem. In that filesystem it will find /EFI/BOOT/BOOTX64.EFI which it then will run. Both boot loaders will then present their boot menus which bring you to the first Linux kernel and the installation software. -------------------------------------------------------------------------- Are you sure older ISOs boot better on your machines ? You mentioned Jessie. So does the following small (251 MiB) ISO here work better ? https://cdimage.debian.org/mirror/cdimage/archive/8.11.1/amd64/iso-cd/debian-8.11.1-amd64-netinst.iso You can put it on DVD, although it's a CD sized ISO. Have a nice day :) Thomas
