Comment # 7 on bug 1084717 from Terje J. Hanssen

I installed Leap 15 on one workstation in dualboot setup with existing Leap
42.3 which had a pre-partioned disk with /boot/efi of 156 MB size.

When mounting this /boot/efi partition for Leap 15 warnings told:
The system might not be able to boot. Missing device for /boot/efi with size >=
256 MiB and file system vfat.


On the other hand, on my dualboot setup ultrabook Dell XPS 13 pre-installed
with Ubuntu 16.04 pre-installed, the /boot/efi partitions was sized 600 MiB.
I've currently used 66 MB here. I've found it useful to directly be able to
Flash new BIOS versions saved on /boot/efi.