diff --git a/com1.out b/com1.out
index a59a741..7d4bdc4 100644
Binary files a/com1.out and b/com1.out differ
diff --git a/iso/boot/kernel.elf b/iso/boot/kernel.elf
index 997ad61..dda24bd 100755
Binary files a/iso/boot/kernel.elf and b/iso/boot/kernel.elf differ
diff --git a/kernel.elf b/kernel.elf
index 997ad61..dda24bd 100755
Binary files a/kernel.elf and b/kernel.elf differ
diff --git a/kmain.c b/kmain.c
index 273b1d1..d5803bf 100644
--- a/kmain.c
+++ b/kmain.c
@@ -3,11 +3,12 @@
 
 int kmain(int retvalue)
 {
+  init_serial();
+  log("serial connection established", 3);
+  log("Kernel started", 2);
+
   clear();
   puts("hello\nbrave\nnew\nworld");
 
-  init_serial();
-  serial_puts("Hello, brave new world. This is a message to let you know that the kernel has started.\n");
-  serial_puts("This is a second message.\n");
   return retvalue;
 }
diff --git a/os.iso b/os.iso
index d99faa0..9e62f36 100644
Binary files a/os.iso and b/os.iso differ
diff --git a/serial.c b/serial.c
index 55ec436..6fe07db 100644
--- a/serial.c
+++ b/serial.c
@@ -42,3 +42,24 @@ void serial_puts(const char* str)
     write_serial(str[i]);
   }
 }
+
+void log(const char* str, const int errlevel)
+{
+  switch (errlevel)
+  {
+    case 0:
+      serial_puts("[ERROR] ");
+      break;
+    case 1:
+      serial_puts("[WARNING] ");
+      break;
+    case 2:
+      serial_puts("[INFO] ");
+      break;
+    case 3:
+      serial_puts("[DEBUG] ");
+      break;
+  }
+  serial_puts(str);
+  serial_puts("\n");
+}
diff --git a/serial.h b/serial.h
index 07f4791..447024f 100644
--- a/serial.h
+++ b/serial.h
@@ -7,5 +7,6 @@ int init_serial();
 int is_transmit_empty();
 void write_serial(const char a);
 void serial_puts(const char* str);
+void log(const char* str, const int errlevel);
 
 #endif