Hi Jiri and Arvin, For me it's beyond bug fix, but to support UEFI System Partition created on MS-DOS extended partition. I don't think it's currently work in any distro, based on the latest upstream status. I think using FATE to track is more appropriate (if at all we want to support it) as involved changes in grub2/efibootmgr/yast, or I'll simply close this one as "resolved upstream". How do you think? Thanks.