[ipxe-devel] appnote/debian_preseed instructions are wrong

Etienne Champetier champetier.etienne at gmail.com
Wed Aug 12 12:55:36 UTC 2020


Hi Christian,

Le mer. 12 août 2020 à 14:42, Christian Nilsson <nikize at gmail.com> a écrit :
>
> On Wed, 12 Aug 2020, 13:30 Michael Brown, <mcb30 at ipxe.org> wrote:
>>
>> On 12/08/2020 08:50, Etienne Champetier wrote:
>> >>> The automagical construction of CPIO archives is indeed for legacy BIOS
>> >>> only.  On UEFI, we provide the kernel with a virtual filesystem from
>> >>> which it can load arbitrary files without needing a CPIO wrapper.
>> >
>> > Do you have a working exemple (maybe I need a special path) ?
>> > Does it need a recent kernel ? (I think I did my tests with CentOS 7 kernel)
>> > Does it need a specific ipxe compile option ?
>>
>> No specific iPXE compile option.  Any kernel built with CONFIG_EFI_STUB
>> should work, which includes all current distro kernels as far as I know.
>>
>> Any image downloaded by iPXE will be available within the virtual
>> filesystem using the filename as shown by "imgstat".  Linux can access
>> these files using the initrd= kernel command-line argument.
>>
>> In the most simple example, something like:
>>
>>    #!ipxe
>>    kernel http://boot.ipxe.org/demo/vmlinuz initrd=initrd.img
>>    initrd http://boot.ipxe.org/demo/initrd.img
>>    boot
>>
>>  From memory, the initrd= option supports a comma-separated list.  I
>> can't immediately find documentation to support this, though.
>>
>> Michael
>>
>> If one wants to add a extra configuration file as well, the extra cpio header needs to be added to that file to work in efi mode.

So you confirm that what is explained at
https://ipxe.org/appnote/debian_preseed is not working anymore ?


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