Yes, Windows Boot Manager is "normal". Disconnect the HDD and set the 1st boot option in BIOS setup to Windows Boot Manager. Then reboot and make sure PC boots from the SSD. If you reconnect the HDD, the PC will boot from the HDD again, unless you use the F12 menu to select the SSD. At some point you'll have to F12 boot to SSD and initialize the HDD so you can use the HDD for storage (after you make your extra image of that HDD and save the image on an external USB drive). Once the HDD is initialized, the PC should boot normally from the SSD, without using the F12 menu.
So I wanted to upgrade to SSD, I got a Sabrent rocket 1tb, cloned everything over, shut down and unplugged HDD, started up fine. It is now drive C:, HDD is D:, when I plug the HDD back in it wants to boot from that and I cant find the SSD, I actually dont see the SSD either even with unplugged HDD it just boots up fine. I want to use the HDD as storage, but I don't want to wipe it incase I need to reinstall incase I did something wrong. I cant seem to figure out how to work the bios to fix this or change anything. When I look at boot sequence it is just, Windows boot manager, and Onboard NICI(4&6), when the HDD is plugged back in it shows it in the boot sequence. If I just clear the HDD will that work since OS s on both? I called tech support but they are no help. they seem to have never heard of this before. any help will be very appreciated. I have spent around 5 hours trying to solve this combing the internet to no help.
Dell G5 5000, SSD cloned from HDD works, BIOS wont show M.2 NVMe to boot from. 
only HDD, but boots when HDD unplugged