CentOS

I am trying to create a custom CentOS 8 ISO that includes my kickstart and I got it working properly for BIOS. However, UEFI boot does not work and always load the UEFI shell (see picture below). The original CentOS 8 ISO works ok on my KVM machine but my custom one does not. To create the ISO I am using:

mkisofs \
-o /ISO/boot.iso \
-b isolinux/isolinux.bin \
-c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table \
-eltorito-alt-boot \
-no-emul-boot \
-e images/efiboot.img \
-V "CentOS-8-1-1911-x86_64-dvd" \
-R -J -v -T .

I also tried to use xorriso with no success.

Any hint about what I am doing wrong?

Thanks.

I've never done it but I do know that it needs to be a hybrid iso image.

I have also tried it... When I try to make it hybrid, I get:

isohybrid --uefi /ISO/boot.iso
isohybrid: Warning: more than 1024 cylinders: 7272
isohybrid: Not all BIOSes will be able to boot this device

Still does not work... The funny thing is that the original ISO works...

Anyone with RedHat support access could share here the contents of this page:
https://access.redhat.com/solutions/60959

Thanks.

For more information on the free Red Hat Developer subscription please see http://developers.redhat.com/blog/2016/ ... available/

That was great! Thanks for sharing the info.
Cheers!

I did the step by step procedure from Red Hat. Still does not work for UEFI.
Anyone that has solved this? If not, is it a Red Hat/CentOS 8 bug?

Thanks.

Did you ever figure this out?? I almost have it but still hit roadblocks.

I did this using xorriso. In the kickstart, I had to include a %pre section that checks if the system is uefi and add a /boot/efi partition if it is.
The labelling is also very picky and it caused me a bit of a headache figuring out so make sure the version you're using is 8-1-1911.

%pre check is: xorriso command I used: