Add newly installed OS to boot menu?

[noobr]

Hey guys.

I removed my Windows partition as I haven’t used it in some time.

I then installed Linux Mint onto that ssd.

When I reboot the Linux Mint SSD had become the default boot device in BIOS and the Linux Mint boot menu did not have the EndeavourOS boot entry in it.

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I changed that in the BIOS boot disk order. When I boot now I see Endeavour OS and the old Windows 11 boot entry.

What I would like to do is remove the Windows 11 boot entry and add the Linux Mint boot entry so when I boot, Endeavour is the default OS with a choice to also boot into Linux Mint.

I have read a couple of forum post but have not found anything that would give me an easy way to do this. Everything seems to deal with Windows over writing the Linux boot entry. My boot entries are fine, I just want to merge them so to speak.

Edit: if it makes any difference each OS is installed onto a separate storage device.

[cactux]

I assume that you have a “default” installation of EOS which uses systemd-boot.
I assume also that you have a “default” installation of Linux Mint which uses Grub.

If both of these assumptions are true then you could use the systems-boot from your EOS to chainload Grub of your Linux Mint.

https://wiki.archlinux.org/title/Systemd-boot#GRUB

[eso]

Hey @noobr ,
Move EndeavourOS to the first place in BIOS.
If you use GRUB,
Boot to EnOS.
Check in /etc/default/grub this line is not preceded by a hashmark
GRUB_DISABLE_OS_PROBER=false
sudo grub-mkconfig -o /boot/grub/grub.cfg