diff --git a/Makefile b/Makefile
index ac805e9..ab68262 100644
--- a/Makefile
+++ b/Makefile
@@ -297,7 +297,8 @@ install: $(installdisk) $(MBRDIR)/grub.cfg $(BINDIR)/kaleid
 	@echo ${CL2}[$@] ${CL}Success.${CL3}
 
 $(installdisk): $(BUILDDIR)/create_disk.sh
-	@echo ${CL2}[$@]${NC} Constructing disk image...${CL3}
+	@echo ${CL2}[$@]${NC} Constructing disk image $@...${CL3}
+	@mkdir -p $(shell dirname $@)
 	@$(BUILDDIR)/create_disk.sh $(installdisk)
 	@echo ${CL2}[$@]${NC} Constructing disk image...${CL3}
 
diff --git a/build/create_disk.sh b/build/create_disk.sh
index 4da1a43..3b555e5 100755
--- a/build/create_disk.sh
+++ b/build/create_disk.sh
@@ -45,11 +45,18 @@ echo ${CL2}[create_disk.sh]${NC} Formatting image... 	\(mkdosfs\)${CL3}
 echo ${CL2}[create_disk.sh]${NC} Mount image... 		\(udisksctl\)${CL3}
 udisksctl loop-setup --no-user-interaction --file $1
 lpblock=$(/sbin/losetup -j $1 | cut -d ':' -f 1)
-mountpoint=$(udisksctl info -b $lpblock | grep MountPoint | cut -d ':' -f 2 | sed 's/ //g')
 
 echo ${CL2}[create_disk.sh]${NC} Sync image... 		\(sync\)${CL3}
 sync
 
+mountpoint=$(udisksctl info -b $lpblock | grep MountPoint | cut -d ':' -f 2 | sed 's/ //g')
+
+if [ -z $mountpoint ];
+then
+	echo Impossible to mount the image $mountpoint. Fatal error !
+	return 13
+fi
+
 echo ${CL2}[create_disk.sh]${NC} Install grub into $lpblock as $mountpoint... 		\(grub-install\)${CL3}
 
 sudo grub-install --force --target=i386-pc --root-directory=$mountpoint --boot-directory=$mountpoint/boot  --no-floppy --modules="part_msdos biosdisk fat multiboot configfile" $lpblock
@@ -60,4 +67,4 @@ sync
 echo ${CL2}[create_disk.sh]${NC} Unmount image... 		\(udisksctl\)${CL3}
 udisksctl unmount --no-user-interaction -b $lpblock
 
-echo ${CL2}[create_disk.sh]${CL} Terminated without error.${CL3}
+echo ${CL2}[create_disk.sh]${CL} Terminated without error.${CL3}
\ No newline at end of file
diff --git a/build/install-os-k.sh b/build/install-os-k.sh
index 5b283a2..952668f 100755
--- a/build/install-os-k.sh
+++ b/build/install-os-k.sh
@@ -33,8 +33,10 @@ set -e #exit if error
 echo ${CL2}[create_disk.sh]${NC} Mount image... 		\(udisksctl\)${CL3}
 udisksctl loop-setup --no-user-interaction --file $1
 lpblock=$(/sbin/losetup -j $1 | cut -d ':' -f 1)
-echo Block is $lpblock
-#udisksctl mount --no-user-interaction -b $lpblock
+
+echo ${CL2}[create_disk.sh]${NC} Sync image... 		\(sync\)${CL3}
+sync
+
 mountpoint=$(udisksctl info -b $lpblock | grep MountPoint | cut -d ':' -f 2 | sed 's/ //g')
 
 echo ${CL2}[grub-install.sh]${NC} Copying grub.cfg