[Samsung Galaxy Note 9 Questions & Answers] David Walton:
I have had nothing but problems trying to use TWRP on a Samsung Galaxy Note 9, SM-N960F running Android 10. Every time I exit TWRP after creating a backup using the usual reboot system button (which worked fine on my Note 4) the phone reverts to the original Samsung "Let's Go!" installation procedure wiping out any setups to the phone I had made.

My questions are about what is stated on the following page --

Samsung Galaxy Note 9 (Exynos)

Disclaimer:Team Win strives to provide a quality product. However, it is your decision to install our software on your device. Team Win takes no ...

twrp.me

Issue 1 -- The warning, "This device uses dm-verity!"

"This means that swiping to allow system modifications will prevent you from being able to boot if you are using the stock kernel. In order to bypass dm-verity's boot prevention, you will have to install a kernel that has dm-verity disabled in the fstab."

What is this all about? What is this "kernel" I need to install that has dm-verity disabled in the fstab and what is "fstab?" Where do I get and how do I install such a kernel?

Issue 2 -- "Odin Install Method (No Root Required):"

"You will need to download and install Odin on your PC. Once you have Odin installed, download the proper .tar file for your device from the download link above. Power off your device. Turn on your device using the proper key combo to get into download mode and attach the device to your computer via a USB cable. Use the PDA tab or button to browse to and select the tar file that you downloaded and flash the device.

"Note many devices will replace your custom recovery automatically during first boot. To prevent this, use Google to find the proper key combo to enter recovery. After typing fastboot reboot, hold the key combo and boot to TWRP. Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP. If you don't follow this step, you will have to repeat the install."

Regarding this statement in the above, "After typing fastboot reboot, hold the key combo and boot to TWRP. Once TWRP is booted, TWRP will patch the stock ROM to prevent the stock ROM from replacing TWRP. If you don't follow this step, you will have to repeat the install."

What is "After typing fastboot reboot" mean? Typing "fastboot reboot" in what and where? There is no such thing using Odin. What is Teamwin talking about? What is it exactly I am supposed to do?

What I have done is set Odin to not reboot after flashing TWRP and then after exiting the download mode and immediately pressing the keys to enter recovery mode. TWRP recovery is then loaded.

BUT, as stated above in the beginning, every time TWRP is exited using the usual reboot system button (which worked fine on my Note 4) the phone reverts to the original Samsung "Let's Go!" installation procedure wiping out any setups to the phone I had made.

TWRP also has this ruinous behavior even after I have rooted the phone using following procedure shown below.

I just do not get it! Has anyone in this forum ever successfully installed TWRP on an SM-960F running Android 10 and have it work like it is supposed to?