Hey, >> * This custom release[3]: 1.1.0-rc2 + the patch suggested by Danny for >> partitions > 1TiB. >> [3]: Via ipfs: QmbbkQZc7fbsDrutNwVuvpFep3dBjZx6muni3WgXjRneq7 > It occured to me that the Samsung drive might have been corrupted at > some point, so I dd'd /dev/zero into the first few gigabytes of the > drive to completely wipe the partition table. Sure enough, it showed up > on the partitioning stage of the graphical installer and I was able get > all the way through to the end... except for the same efibootmgr error. Ok! So it seems that the additional patch is improving the situation. I also fear that 1.1.0-rc2 is having the same error as 1.0.1 but is swallowing it. I will investigate it further. Regarding the efibootmgr error, I'm not really familiar with EFI. Can you check that efivarfs is mounted as suggested here[1]? Thanks, Mathieu [1]: https://unix.stackexchange.com/questions/379774/grub-installation-failed