Hi, > I downloaded the live no-desktop-environment image from cdimage.debian.org
Well, cdimage.debian.org leads to many ISO images. Your description would match debian-live-8.4.0-amd64-standard.iso . wget http://cdimage.debian.org/debian-cd/current-live/amd64/iso-hybrid/debian-live-8.4.0-amd64-standard.iso xorriso -indev debian-live-8.4.0-amd64-standard.iso \ -report_system_area plain \ -report_el_torito plain reports only BIOS equipment: ... MBR partition table: N Status Type Start Blocks MBR partition : 1 0x80 0x17 64 853952 ... El Torito images : N Pltf B Emul Ld_seg Hdpt Ldsiz LBA El Torito boot img : 1 BIOS y none 0x0000 0x00 4 194654 El Torito img path : 1 /isolinux/isolinux.bin El Torito img opts : 1 boot-info-table isohybrid-suitable ... So yes, this will not boot via EFI, because it does not advertise an EFI System Partition. > essentially dd if=<image> of=/dev/sdc bs=4M ; sync In general ok. It depends on the <image> what you get as boot equipment. > wrongly putting /dev/sdc1 Already one mistake done and put aside. > was able to boot once I enabled legacy boot support in my UEFI setup. Then it is very interesting for me to see the exact ISO you use. If you want to test one that is surely aiming at UEFI, try wget http://cdimage.debian.org/debian-cd/8.4.0/amd64/iso-cd/debian-8.4.0-amd64-netinst.iso which offers ... MBR partition table: N Status Type Start Blocks MBR partition : 1 0x80 0x00 0 505856 MBR partition : 2 0x00 0xef 3900 832 MBR partition path : 2 /boot/grub/efi.img ... [GPT and APM stuff probably ignored by firmware] ... El Torito images : N Pltf B Emul Ld_seg Hdpt Ldsiz LBA El Torito boot img : 1 BIOS y none 0x0000 0x00 4 1183 El Torito boot img : 2 UEFI y none 0x0000 0x00 832 975 El Torito img path : 1 /isolinux/isolinux.bin El Torito img opts : 1 boot-info-table isohybrid-suitable El Torito img path : 2 /boot/grub/efi.img ... Here, the file /boot/grub/efi.img is advertised as EFI System Partition. Please try whether such an ISO boots for you without legacy boot support. The installation ISOs are quite live, too. Maybe they already suit your needs. If not, then one will have to ask for Debian live ISOs to adopt the boot equipment of the debian-cd ISOs. Have a nice day :) Thomas
