Dual boot with Windows 10 on a separate drive and Legacy/UEFI issues

[jrichard326]

Please see response #2 here:

Windows not listed as boot option after manually installing GRUB

Installed in BIOS mode as per your sda layout. That’s normal, as the Windows 10 UEFI files do not exist and you cannot mix BIOS and UEFI installs. Now you need to put the machine in BIOS mode to boot to Windows and in UEFI mode to boot into Manjaro. The solution without having to change the boot mode, you ask??? Delete Manjaro and install it in BIOS mode too and grub will find Windows in BIOS mode… OR Delete Windows and reinstall it in UEFI mode Note: Just in case you re-install…