GRUB doesn't show linux mint after installing EndeavourOS

[pebcak]

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@Sermor

# Probing for other operating systems is disabled for security reasons. Read

# documentation on GRUB_DISABLE_OS_PROBER, if still want to enable this

# functionality install os-prober and uncomment to detect and include other

# operating systems.

#GRUB_DISABLE_OS_PROBER=false

Uncomment this line

#GRUB_DISABLE_OS_PROBER=false

in /etc/default/grub and regenerate your grub.cfg.