Re: Help Creating Linux ISO

[MarcellusMajor]

the efiboot.img is the original from the  RHEL 7 iso

On 10/12/2020 2:51 AM, Thomas Schmitt wrote:
> Hi,
>
>> Could you let me know what I am doing wrong?
> There are surplus EFI boot images by the arguments beginning at the second
> -eltorito-alt-boot.
> It might be confusing to the boot firmware that the same EFI boot image is
> listed twice in the El Torito boot catalog.
>
> This would make the ISO without duplication of EFI images:
>
>   xorrisofs \
>     -o target/csg-3.0.0.0_RC16.0.0.65SBR-x86_64-HYBRID.iso \
>     -b isolinux/isolinux.bin \
>     -c isolinux/boot.cat \
>     -no-emul-boot -boot-load-size 4 -boot-info-table \
>     -isohybrid-mbr /usr/share/syslinux/isohdpfx.bin \
>     -partition_offset 16 \
>     -eltorito-alt-boot \
>     -e images/efiboot.img \
>     -no-emul-boot -isohybrid-gpt-basdat \
>     target/dvd
>
> From where did you get images/efiboot.img ?
>
> If you used a RHEL ISO as source of files:
> Does that ISO boot ?
> Is it available for public download ?
> What text output do you get from inspecting that ISO by
>   iso=...path.to.original.ISO...
>   xorriso -indev "$iso" -report_el_torito as_mkisofs
> ?
>
> If you made efiboot.img yourself:
> What's in it ?
> Did you compare the files in efiboot.img with those in an original RHEL
> ISO ?
>
>
> Have a nice day :)
>
> Thomas
>
>