Need to reboot twice for POST & grub menu

[Shibblet]

If I had to venture a guess… your monitor is not kicking on faster than the GRUB timer. After the reboot, your monitor is already on, and allows you to see GRUB quicker than the timer.

Get grub-customizer and turn off the timer, or set it for a longer duration.

[Arch Linux - grub-customizer 5.2.5-1 (x86_64)]
https://archlinux.org/packages/extra/x86_64/grub-customizer/

Mod: Warning - grub customiser is NOT an approved software. See the Tutuorial:

Grub-Customizer

Grub-Customizer See also: Grub Arch Wiki Grub customizer is a contentious subject - however, the general consensus is that it represents a bad example of an attractive GUI for nOObs. It is potentially dangerous and completely unnecessary. It adds layers of complexity to the bootloader, which is critical to the system. It does not do anything that cannot be achieved by other means. Despite these concerns, the fact that some people use it without encountering problems simply perpetuates the ig…