> > Actually, I'm trying from the hard disk. I can boot from the cdrom and > have a working console if I choose "Legacy BIOS" in the bios > options. But I couldn't install Debian GNU/Linux this way, if I recall > correctly, so now I'm trying to keep uefi. >
You probably already have addressed this, so you can ignore this. UEFI support for MBR partitions is quite confusing. Shouldn't the disk have a GPT partition, not an MBR partition, to boot in UEFI without BIOS legacy mode (Compatibility Support Module)? Doesn't Secure Boot need to be turned off in the firmware too? I think Debian is using shim for Secure Boot to work (as the root of trust). Also, doesn't the EFI System Partition(FAT32) need both the grub-efi file (\EFI\debian\grubia*.efi) and bootloader file (\EFI\boot\boot*.efi)*?--there other options for not having a boot file which are probably being used. https://wiki.debian.org/UEFI https://wiki.debian.org/SecureBoot https://uefi.org/specifications/ >
