With multiple drives, I often have to manually edit boot stanza as I boot.
My hd0 may become hd1, hd1 then is hd2. But boot drive is always hd0, even if sdd or normally hd3 is used to boot.
May be best to see details, use ppa version with your live installer or any working install, not older Boot-Repair ISO:
Post the link to the Create BootInfo summary report. Is part of Boot-Repair:
https://help.ubuntu.com/community/Boot-Info and:
https://sourceforge.net/p/boot-repair/home/Home/
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