I got a error while dual booting cutefish manjaro

The bootloader could not be installed. The installation command
grub-install --target=i386-pc --recheck --force /dev/sda
returned error code 1.

That’s the error I got, I am installing on a separate had with 500GB storage and also my main system is windows 7 500GB ssd, I am trying to install cutefish on had, need help please, this is very important, and my system is lenovo ThinkPad, and core is i5 4GB ram

Provide Information:

Dual Boot:

Switch from Windows:

Windows 7 is installed in BIOS (most likely using MBR) mode - make sure you install Manjaro in BIOS mode as the ISO boots in EFI mode on EFI enabled systems.

One way of mitigating this, is to disable EFI boot in the firmware.