yast2-boot-server from YaST:SLE-12:SP5 project
Select Your Operating System
Add repository and install manually
For openSUSE Leap 42.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/YaST:SLE-12:SP5/openSUSE_Leap_42.3/YaST:SLE-12:SP5.repo zypper refresh zypper install yast2-boot-server
Grab binary packages directly
Add repository and install manually
For SLE 12 SP4 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/YaST:SLE-12:SP5/SLE_12_SP4/YaST:SLE-12:SP5.repo zypper refresh zypper install yast2-boot-server