diff --git a/resources/grub/config/grub.cfg b/resources/grub/config/grub.cfg
index 89f50f3..c3e8657 100644
--- a/resources/grub/config/grub.cfg
+++ b/resources/grub/config/grub.cfg
@@ -8,15 +8,9 @@ insmod ohci
 insmod uhci
 insmod usb
 insmod usbms
-insmod usbserial_pl2303
-insmod usbserial_ftdi
-insmod usbserial_usbdebug
 insmod regexp
 
 # Serial and keyboard configuration, very important.
-serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1
-terminal_input --append  serial
-terminal_output --append serial
 terminal_input --append at_keyboard
 terminal_output --append cbmemc