diff --git a/mineserve b/mineserve
index 151654c..8469f55 100755
--- a/mineserve
+++ b/mineserve
@@ -13,25 +13,23 @@ status() {
     echo
 }
 
-serve() {
-    java -Xms1G -Xmx5G -jar server.jar nogui
-}
-
 start() {
     if test -f "$PID"; then
         echo "Server already running with pid: $(cat $PID)"
         status
         exit 0
     fi
-    screen -S minecraft -dm serve
+    screen -S minecraft -dm java -Xms1G -Xmx5G -jar server.jar nogui
     pgrep -P "$(screen -list | sed -E -n 's/\s*([0-9]+).minecraft.*/\1/p')" > $PID
 }
 
 stop() {
     if test -f "$PID"; then
+        SCREEN_PID=$(screen -list | sed -E -n 's/\s*([0-9]+).minecraft.*/\1/p')
         screen -S minecraft -X stuff "stop
"
         echo -n "Waiting for shutdown..."
-        while screen -list | grep -q "minecraft"; do
+        # kill -0 checks if a process is running
+        while kill -0 $SCREEN_PID 2> /dev/null; do
             sleep 3
             echo -n "."
         done
diff --git a/rdify b/rdify
index 28044b5..cd45bb6 100755
--- a/rdify
+++ b/rdify
@@ -26,11 +26,10 @@ class RamDiskItem():
         self.persist.mkdir(parents=True, exist_ok=True)
         self.ramdisk.mkdir(parents=True, exist_ok=True)
 
-
         if self.target.is_file():
             shutil.copy2(self.target, self.ramdisk)
         else:
-            shutil.copytree(self.target, self.full_rd_path)
+            shutil.copytree(self.target, self.full_rd_path, dirs_exist_ok=True)
         shutil.move(self.target, self.persist)
 
         os.symlink(self.full_rd_path, self.target)