In fstab, need to make the following changes as root for GRUB_DEFAULT & GRUB_SAVEDEFAULT:1. .... But the really nice thing about the Manjaro boot loader is that it remembers what you last booted and offers that as the default rather than always reverting to the first option. I know that non-newbies will figure out that they can fix things with the (thoughtfully included) Grub Customiser but I would suggest that "previous booted entry" should be pre-set when installing MX and that the Windows entry got right immediately.
Code: Select all
GRUB_DEFAULT=saved
# GRUB_DEFAULT="MX GNU/Linux, with Linux 4.1-7.dmz.1-686-pae (sda2)"
. . .
#GRUB_SAVEDEFAULT="false"
GRUB_SAVEDEFAULT="true"
and boot after the timeout, unless you change it manually before the timeout.