In case not, please, create it using "mkdir /boot/efi" command. Make sure /boot/efi directory exists first. Now your boot drive has a GPT disk label which contains a FAT EFI boot partition. Under "Mounting options" select "/boot/efi" and hit "Finish".In the "Formatting options" dialog select "Format Partition" -> "File system" -> "FAT".As an alternative to using YAST you can also run the UEFI utility "Diskpart.efi" to wipe the disk first and make the disk GPT and create the EFI FAT system partition before running the Yast installation.This can be done during post time or from the EFI shell.
Select a hard disk and select the "Partitions" tab.Expand the hard disks to see the disks available. Under "System view" select Hard disks.When at "Installation Settings", select "Partitioning", then "Custom partitioning (for experts)".Follow normal boot instructions from YaST.Select UEFI boot from BIOS boot manager or boot to shell and execute /efi/boot/elilo.efi from removable media.Attention: this procedure will delete any information from the disks!