Fixes bug #34914 - update remaster script for RHEL8-based 4.0 FDI

[pbburke]

Fixes Bug #34914

[lzap]

I need to setup an EFI VM to see this, can you explain "But the remaster script still turns the FDI ISO into a flat image with no partition structure.". I don't understand.

The remaster script touches nothing but config files, we actually ship kernel/initramdisk twice on the ISO, we should probably drop one pair to save about 50MB.

[lzap]

Oh wait the original ISO is created with -cache-inodes option which actually makes a ISO hardlink to the kernel and initramdisk. This explains why remastered ISO is larger by 50MB. I will fix this.

Also I think I know what you mean now, with EL8 (lorax) the EFI ESP is now under /images/ instead of /isolinux where the script expects it. Then it basically fallsback to BIOS only ISO not providing the correct option.

[lzap]

Ok figured it out all, thanks for the report and the patch. It was more complicated than that. I fixed it in this commit: b94bf01

Please test now. It should be all good now, on top of that the remastered image is now 50MB smaller :)

Cheers.