On 10/11/19 12:42 PM, александр епанешников via arch-releng wrote:
>
> thanks for answers.
>
>> One for USB EFI boot, the other for the vintage DVD/CD mode in EFI ("El
>> Torito")
>
>
> wear i can read about Torito? because now i don't understand fully "how
> boot segment of archiso built?"
>
> For traditional bios firmware, this is done "magically" by these lines: -eltorito-boot isolinux/isolinux.bin -eltorito-catalog isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table and for efi firmware with (at last) -eltorito-alt-boot -e EFI/archiso/efiboot.img -no-emul-boot -isohybrid-gpt-basdat" in mkarchiso this requires more work, because efiboot.img must be prepared this is just a vfat fs inside (done at build.sh) > > > > 11.10.2019 17:28, Gerardo Exequiel Pozzi via arch-releng пишет: >> On 10/6/19 2:38 PM, Alexandr Epaneshnikov via arch-releng wrote: >>> hello. since i work on #63166 >>> <https://bugs.archlinux.org/task/63166?project=6>i have sum questions >>> about archiso project. >>> >>> As far as I understand, two loaders are used. syslinux for bios and >>> systemd-boot for efi. is it so? and why it is so? > >> * because systemd-boot does not support non-efi >> * syslinux may not work on efi (at least it does for few machines I > tested). >> * systemd-boot is the... maybe bring most features to systemd... >>> >>> i modified syslinux config >>> > <https://github.com/alex19EP/talkingarch/raw/accessible-upstreem/configs/releng/syslinux/archiso_sys.cfg> >>> to add another entry with kernel cmdline options. do i need to add >>> another file in configs/releng/efiboot/loader/entries for efi support? >>> > >> yes > >>> why are archiso-x86_64-cd.conf and archiso-x86_64-usb.conf? > >> One for USB EFI boot, the other for the vintage DVD/CD mode in EFI ("El >> Torito") >>> >>> >>> thanks. >>> > > >
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