diff --git a/boot/grub/umount.sh b/boot/grub/umount.sh
index 78bfa66..cf8035b 100755
--- a/boot/grub/umount.sh
+++ b/boot/grub/umount.sh
@@ -29,7 +29,8 @@ CL3='\033[0m'
 NC='\033[1;37m'
 
 set -e #exit if error
-sleep 3
+#sleep 3
+sync
 echo ${CL2}[umount.sh]${NC} Unmounting volume... 		\(umount\)${CL3}
 sudo umount $1
 echo ${CL2}[umount.sh]${NC} Unmounting image... 		\(losetup\)${CL3}