Hi, i have to add some technical nitpicking for the archives:
IL Ka wrote: > I am not aware of any document, but here is how UEFI boot works https://uefi.org/specifications current is UEFI Specification Version 2.9 (March 2021) https://uefi.org/sites/default/files/resources/UEFI_Spec_2_9_2021_03_18.pdf although i still read https://uefi.org/sites/default/files/resources/UEFI_Spec_2_8_A_Feb14.pdf when it comes to discussions. > Harddrive is GPT-labeled and it has a partition with a special EFI flag. It may also be partitioned by an MBR partition table. (UEFI 2.8, 5.2.2 OS Types: "0xEF (i.e., UEFI System Partition) defines a UEFI system partition." ) Debian ISOs boot from USB stick by such an MBR partition. In GPT the EFI partition is specified to be marked by type GUID 12A7328-F81F-11D2-BA4B-00A0C93EC93B. (UEFI 2.8, Table 23 Defined GPT Partition Entry - Partition Type GUIDs) Have a nice day :) Thomas
