Informational messages added about 'initramfs' option

Signed-off-by: Adam Michel <elfurbe@furbism.com>

overlays/wwinit/rootfs/init

@@ -41,6 +41,9 @@ if [ "${WWROOT}" != "${ROOTFSTYPE}" ]; then
         echo "Switching to new rootfs and invoking /warewulf/wwinit..."
         exec /sbin/switch_root /newroot /warewulf/wwinit
     elif [ "${WWROOT}" == "initramfs" ]; then
+        echo ">>> Deprecated option \"initramfs\" chosen."
+        echo ">>> The 'initramfs' can be either a ramfs or a tmpfs natively, depending on kernel configuration."
+        echo ">>> If you wish to use whatever this kernel chooses by default, remove this 'root' setting from your nodes/profiles."
         echo "Invoking /warewulf/wwinit..."
         exec /warewulf/wwinit
     else