Try this from an ADMIN command prompt bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi Note: This is from Windows, and this will work with any flavor of Ubuntu and with Mint, it may not work with other distributions.
Try this from an ADMIN command prompt bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi Note: This is from Windows, and this will work with any flavor of Ubuntu and with Mint, it may not work with other distributions.