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Groups > linux.debian.user > #269016

Re: bootable pendrive from zip file

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On 23/04/2024 00:49, Thomas Schmitt wrote:
> This aims at an undocumented habit of EFI implementations to look in
> any FAT filesystem for a \EFI\BOOT directory with a suitable BOOT*.EFI
> file and to start it, if found.
> (Officially documented is to look in FAT filesystems of partitions with
> MBR type 0xEF or GPT type GUID C12A7328-F81F-11D2-BA4B-00A0C93EC93B.)

Out of curiosity, does the requirement of specific GUID exist for 
removable drives? A USB drive may be formatted without partition table.

I am in doubts if any user will really benefit from UEFI implementations 
strictly following the spec. Making a bootable media is harder for 
regular users, chance of unintentional action is low, it is unlikely an 
obstacle for attackers trying to force users to boot a compromised image.

> So just mount the ISO:
> and copy its content to the mounted USB stick.

7z and bsdtar can extract content of ISO files without mounting images.

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Thread

bootable pendrive from zip file Luis Muñoz Fuente <luis.munoz.edu@juntadeandalucia.es> - 2024-04-22 19:00 +0200
  Re: bootable pendrive from zip file "Thomas Schmitt" <scdbackup@gmx.net> - 2024-04-22 20:00 +0200
    Re: bootable pendrive from zip file Luis Muñoz Fuente <luis.munoz.edu@juntadeandalucia.es> - 2024-04-22 20:10 +0200
      Re: bootable pendrive from zip file "Thomas Schmitt" <scdbackup@gmx.net> - 2024-04-22 20:30 +0200
        Re: bootable pendrive from zip file Luis Muñoz Fuente <luis.munoz.edu@juntadeandalucia.es> - 2024-04-22 21:00 +0200
        Re: bootable pendrive from zip file Luis Muñoz Fuente <luis.munoz.edu@juntadeandalucia.es> - 2024-04-22 21:10 +0200
          Re: bootable pendrive from zip file "Thomas Schmitt" <scdbackup@gmx.net> - 2024-04-22 21:50 +0200
    Re: bootable pendrive from zip file Max Nikulin <manikulin@gmail.com> - 2024-04-23 04:50 +0200
      Re: bootable pendrive from zip file "Thomas Schmitt" <scdbackup@gmx.net> - 2024-04-23 08:30 +0200
        Re: bootable pendrive from zip file Luis Muñoz Fuente <luis.munoz.edu@juntadeandalucia.es> - 2024-04-24 10:50 +0200
        Re: bootable pendrive from zip file Max Nikulin <manikulin@gmail.com> - 2024-04-25 05:30 +0200
          Re: bootable pendrive from zip file "Thomas Schmitt" <scdbackup@gmx.net> - 2024-04-25 09:00 +0200
            Re: bootable pendrive from zip file Max Nikulin <manikulin@gmail.com> - 2024-04-25 13:20 +0200
              Re: bootable pendrive from zip file "Thomas Schmitt" <scdbackup@gmx.net> - 2024-04-25 13:50 +0200

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