On Tue, Aug 20, 2024 at 05:17:43PM CEST, Max Nikulin <maniku...@gmail.com> said:
> On 20/08/2024 11:27, David Christensen wrote:
> > AIUI UEFI/GPT were designed to support multi-boot
>
> Single EFI System Partition may contain loaders from different vendors, but
> not 2 Debian systems installed on different partitions. EFI files are signed
> for Secure Boot, so vendor paths can not be easily adjusted. I have no idea
> how much trouble may cause multiple ESP on the same drive. I tried ESP on
> different drives and it works (HP firmware on a decade-old laptop is quite
> buggy in respect to boot configuration). Actually GRUB menu to load system
> from alternative partition is more convenient than firmware boot menu in my
> case.
Here is the tree on my laptop, I think the "ubuntu part" comes from a
former Mint installation (Debian is tthe only OS on the computer)
.
└── EFI
├── BOOT
│ ├── BOOTX64.EFI
│ ├── fbx64.efi
│ └── mmx64.efi
├── debian
│ ├── BOOTX64.CSV
│ ├── fbx64.efi
│ ├── fw
│ │ └── fwupd-cdcae5ae-413a-4198-b866-8028e994dd53.cap
│ ├── fwupdx64.efi
│ ├── grub.cfg
│ ├── grubx64.efi
│ ├── mmx64.efi
│ └── shimx64.efi
├── Dell
│ └── Bios
│ └── Recovery
│ ├── BIOS_CUR.RCV
│ └── BIOS_PRE.rcv
└── ubuntu
├── BOOTX64.CSV
├── fw
├── fwupdx64.efi
├── grub.cfg
├── grubx64.efi
├── mmx64.efi
└── shimx64.efi
--
Erwan David
