Cosmetics at overlayroot enabling, disable kernel freezing for non-armbian

debian-config-jobs

@@ -1183,7 +1183,7 @@ function jobs ()
 				debconf-apt-progress -- apt-get -o Dpkg::Options::="--force-confnew" -y --no-install-recommends install overlayroot
 				echo '#!/bin/bash' > /etc/update-motd.d/97-overlayroot
 				echo 'if [ -n "$(mount | grep -w tmpfs-root)" ]; then \
-				echo -e "\n[\e[0m \e[1mremember: your system is in virtual read only mode\e[0m ]";fi' >> /etc/update-motd.d/97-overlayroot
+				echo -e "[\e[0m \e[1mremember: your system is in virtual read only mode\e[0m ]\n";fi' >> /etc/update-motd.d/97-overlayroot
 				chmod +x /etc/update-motd.d/97-overlayroot
 				dialog --title "Root overlay" --backtitle "$BACKTITLE" --yes-label "Reboot" \
 				--no-label "Cancel" --yesno "\nEnable virtual read-only root and reboot." 7 45

debian-config-submenu

@@ -29,10 +29,12 @@ while true; do
 
 	[[ $(sed -n 's/^DEVNAME=//p' /sys/dev/block/$(mountpoint -d /)/uevent 2> /dev/null) == mmcblk* && -f /usr/sbin/nand-sata-install ]] \
 	&& LIST+=( "Install" "Install to SATA, eMMC, NAND or USB" )
-	if [[ -n "${mark}" ]]; then
-			LIST+=( "Defreeze" "Enable kernel upgrades" )
-		else
-			LIST+=( "Freeze" "Disable kernel upgrades" )
+	if [[ -f /etc/armbian-release ]]; then
+		if [[ -n "${mark}" ]]; then
+				LIST+=( "Defreeze" "Enable kernel upgrades" )
+			else
+				LIST+=( "Freeze" "Disable kernel upgrades" )
+		fi
 	fi
 	if [[ -z $(apt-mark showhold | grep -w "$BOARD") ]]; then
 	[[ -f /etc/apt/sources.list.d/armbian.list ]] && [[ -n $(grep -w apt /etc/apt/sources.list.d/armbian.list) ]] \