How to Fix Multi-boot - Lost of any OS installed before Ubuntu

Big thanks to Ryugamine Mikado from General Linux Discussion Malaysia for sharing such a nice option to fix the multi-boot!

@Tecsun Yeep hi there oh it actually scans the entire disk for all OS and it has been PROVEN to recover any type of OS (i myself used it once to recover my arch when I accidentally fuk'd up my grub.conf) plus many more options such as recovering partition tables , bootsectors and such but i think it only works with GRUB/GRUB2 ,so if you're using another type of bootloader such as LILO you would have to resort to something else

The GUI method of fixing the multi-boot - lost of any OS installed before Ubuntu is well documented here: https://help.ubuntu.com/community/Boot-Repair

Here's a screenshot of it: