[22:41] <ailion> Hi
[22:42] <ailion> I need some help
[22:43] <ailion> I'm able to build a bootable iso image for BIOS on x86 platform, the boot sector I passed as a parameter to mkisofs is "/isolinux/isolinux.bin".
[22:45] <ailion> Now I'm working on a dual-socket arm64 server, which has UEFI only without legacy BIOS compatible mode supported.
[22:46] <ailion> I found a document from Debian, which pass "-e boot/grub/efi.img" to mkisofs.
[22:46] <ailion> https://wiki.debian.org/RepackBootableISO#arm64_release_9.4.0
[22:47] <ailion> However, I can't find "boot/grub/efi.img" after installing ubuntu-18.04.4-server-arm64.iso on my working machine.
[22:48] <ailion> Which package should I install to have this efi.img?
[22:51] <ailion> BTW, I foud an efi.img at "debian-installer/build/tmp/cdrom_grub/grub_efi/efi.img" but I don't know if it's the corrent file since it's in a tmp dir.