boot-repair can not fix with /boot partition

[hazzapotter]

I have just moved an SSD from my mac osx into a laptop. The SSD had two ubuntu partitions + mac partition (that I never used). One partition is a normal partition with everything stored under /, but the special partition has a /boot partition too. After placing the SSD into the new laptop I could boot into both partitions. I did sudo apt-get update && sudo apt-get upgrade on the special partition. I could still boot into either partition. Then upgraded the normal partition and noticed that only the normal partition + mac partitions were visible on the boot menu.

I tried to fix this using Boot-Repair, however I get an error message saying that I need an EFI-compatible version. Here is a paste from the Boot-Repair tool : http://paste.ubuntu.com/17993991/

Any help appreciated.

[oldfred]

I do not know Mac. But they use UEFI.

But you have installed Ubuntu in BIOS boot mode on a gpt partitioned drive and it looks like you have created a hybrid MBR/gpt drive, which is not recommended.

If Boot-Repair is asking for the ESP - efi system partition, then it is trying to reinstall grub in UEFI boot mode. And your ESP is sda1 in the gpt partition, but not in BIOS/MBR.

http://www.rodsbooks.com/gdisk/hybrid.html (http://www.rodsbooks.com/gdisk/hybrid.html)
convert hybrid to protective MBR gdisk experts commands p, x, n, p, w
http://askubuntu.com/questions/650194/repair-windows-boot-loader-after-installing-ubuntu-on-macbook-pro
(http://askubuntu.com/questions/650194/repair-windows-boot-loader-after-installing-ubuntu-on-macbook-pro)
http://askubuntu.com/questions/732611/while-installing-ubuntu-on-a-mac-should-i-install-it-under-efi-or-bios
(http://askubuntu.com/questions/650194/repair-windows-boot-loader-after-installing-ubuntu-on-macbook-pro)