Knox only notifies Samsung that your device isn't stock anymore not necessarily rooted like with a custom recovery and then flashed mods and what not but if you Odin the stock rom it resets the counters so Samsung will never know....and that i hav...
you can root the stock 4.4.2
first step make sure your on 4.4.2
second step download Towel Root
third step place Towel Root in sdcard or internal storage
fourth step with any file manager find and install Towel Root
fifth step roo...