Pop OS Windows Dual boot support with UIEF

During the first boot Pop OS does not show any boot selection menu. To fix that we can add

timeout <Seconds>

to sudo gedit /boot/efi/loader/loader.conf and save.

Still if you are not able to view Windows in boot menu. You can follow instructions from this page

The gist of it is that Copy Microsoft folder from UIEF partition of Windows to Pop OS UIEF partition. It would looks like something like this

root@pop-os:/boot/efi# cd EFI/
root@pop-os:/boot/efi/EFI# ls
BOOT  Linux  Microsoft  Pop_OS-077f0a72-1af9-49ec-94ec-458efccc5654  systemd
root@pop-os:/boot/efi/EFI# 

There is another reddit page for your reference to knwo the details.