minor update

README.md

@@ -219,8 +219,16 @@ installed. DKMS is provided by and maintained by Dell.
 It is recommended that you do not delete the driver directory after installation
 as the directory contains information and scripts that you may need in the future.
 
-There is no need to disable Secure Mode to install this driver. If Secure Mode
-is properly setup on your system, this installation will support it.
+Secure mode: The primary installation script, `install-driver.sh`, will support
+secure mode... if your distro supports the method in use. I regularly test the installation
+script on systems with secure mode on. It works very well on Ubuntu and Linux Mint. Some
+distros, such as Raspberry Pi OS, do not support secure mode because the hardware they
+support does not support secure mode making it unnecessary. There are distros that do not
+work with the support currently in use with this driver. If you install this driver and,
+after a reboot, the driver is not working, you can go into the BIOS and tempoarily turn
+secure mode off to see if secure mode is the problem. I am currently investigatimg alternative
+ways to support secure mode that will work on most or all distros that support secure mode.
+If you are interested in helping, please post a message in `Issues`.
 
 ### Installation Steps