Yesterday I installed Ubuntu onto my 2nd drive (the main drive has Windows 10 on it) but there is no way for me to boot it from it. I tried changing the boot order but that didn't work. Then I tried unplugging my SSD with Windows and only leaving the other disk but it wouldn't boot anything.
Solved!
Boot repair helped me. I removed grub from the system and then installed in on both disks and now I get into the grub menu when booting.
Thank you all for help!
Have you tried to disable the Windows Fast Startup function?
This has caused me the same problem in the past. Try running this command from the Windows cmd Prompt:
Shutdown.exe -s -t 00
It will shutdown windows completely and if you still don't get the grub menu, then try setting grub as the boot manager for Windows with this cmd:
bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi
Try disabling secure boot in your computer’s BIOS. If you didn’t install Ubuntu with an EFI partition, you may need to enable the legacy boot option in BIOS.
