sudo rpi-update on my 3B+ 16.04.5 ubuntu Mate installation before reading that it might be unwise to do so and could possibly cause instability. It upgraded my kernel from 4.14.79-v7+ to 4.14.90-v7+. I am booting this Pi from sd card and running ubuntu Mate on an usb external ssd.
Everything seems to be running ok so far with the 4.14.90-v7+ kernel. Since I am booting from sd card it would be easy for me to revert back to the original 4.14.79-v7+ kernel.
I have 2 questions about this situation:
- If there are no obvious issues with the new kernel, is there any reason to go back to the original one?
- Since I am booting from sd card, is it safe to believe that all of the new updated kernel files are located in the PI_BOOT folder on the sd card and not in the PI_ROOT folder on the SSD drive?