Comment 135 for bug 1355698

One thing to add when the installation fails meaning when this "grub-efi-amd64-signed" appears, it usually creates 5 partitions as opposed to the usual 3 partitions.

Partition#1 - 1MB Free space
Partition#2 - EFI
Partition#3 - EXT4
Partition#4 - Swap
Partition#5 - 1MB Free space

It is always like this when it fails.