Where does the GRUB loader get installed to

[tsam19]

Regardless of where the system EXT 3 files were installed, i installed the GRUB 2 loader into DEV/SDA.

This is the result & is probably the best I will get all 4 operating systems to boot up, it seems like GRUB 2 controls them all.

The GRUB 2 menu appears giving me the choice to boot up any of the 4 systems.

Linux is the default operating system if I don't choose.

I just need to increase the time out option, so I get more time to choose.

[coopstah13]

edit /etc/default/grub file

change value of GRUB_TIMEOUT to your chosen time in seconds before selecting OS

change GRUB_DEFAULT to your chosen preferred boot option (the one that will be highlighted), it starts with value 0 for 1st option

after, run sudo update-grub command