diff --git a/src/usbinstall.sh b/src/usbinstall.sh
index a5c69fd..6f27e90 100644
--- a/src/usbinstall.sh
+++ b/src/usbinstall.sh
@@ -26,43 +26,6 @@
 TEXTDOMAINDIR=/usr/share/locale/
 TEXTDOMAIN=usbinstall
 
-
-#=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~
-#-------------------------------------(DBUS)-----------------------------------------
-#=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~
-function dbus_properties_get_string() {
-   REPLY=`dbus-send --system --print-reply --dest=$1 $2 \
-org.freedesktop.DBus.Properties.Get string:$3 string:"$4"`
-   [ $? -eq 0 ] || return 1
-   echo $REPLY | sed "s|.*string.*\"\(.*\)\"|\1|"
-   return 0
-}
-
-function dbus_properties_get_stringlist() {
-# FIXME: only returns first element
-   REPLY=`dbus-send --system --print-reply --dest=$1 $2 \
-org.freedesktop.DBus.Properties.Get string:$3 string:$4`
-   [ $? -eq 0 ] || return 1
-   echo $REPLY | sed "s|.*array.*\[ string \"\(.*\)\" ]|\1|"
-   return 0
-}
-
-function dbus_properties_get_uint64() {
-   REPLY=`dbus-send --system --print-reply --dest=$1 $2 \
-org.freedesktop.DBus.Properties.Get string:$3 string:$4`
-   [ $? -eq 0 ] || return 1
-   echo $REPLY | sed "s|.*uint64 \(.*\)|\1|"
-   return 0
-}
-
-function dbus_properties_get_bool() {
-   REPLY=`dbus-send --system --print-reply --dest=$1 $2 org.freedesktop.DBus.Properties.Get string:$3 string:"$4"`
-   [ $? -eq 0 ] || return 1
-   echo $REPLY | sed "s|.*boolean \(.*\)|\1|"
-   return 0
-}
-
-
 # Set progressbar (only if $DBUS_USBINSTALL = 1)
 # Arg 1: value%
 set_pbar()
@@ -118,6 +81,9 @@ function errorAndExit()
         if [ "${SELECT_USB2}" ]; then
            udisksctl unmount -b ${SELECT_USB2} >/dev/null
         fi
+        if [ "${SELECT_USB3}" ]; then
+           udisksctl unmount -b ${SELECT_USB3} >/dev/null
+        fi
 	exit_frontend "$1" # Termina il frontend con codice di errore 1
 	exit 1
 }
@@ -181,9 +147,11 @@ fi
 if [ "${SELECT_USB:0:9}" = "/dev/loop" ]; then
    SELECT_USB1=${SELECT_USB}p1
    SELECT_USB2=${SELECT_USB}p2
+   SELECT_USB3=${SELECT_USB}p3
 else
    SELECT_USB1=${SELECT_USB}1
    SELECT_USB2=${SELECT_USB}2
+   SELECT_USB3=${SELECT_USB}3
 fi
 
 # Check if Arg 2 is valid
@@ -217,11 +185,11 @@ trap "[ \"$CPPID\" ] && kill -9 $CPPID" HUP INT QUIT ABRT KILL TERM
 set_status $"Unmount usb device"
 echo $"Unmount usb device"
 
-DEVICEMOUNTPOINTS=`udisksctl info -b ${SELECT_USB1} | grep MountPoints: | sed "s|.*[[:space:]]||"`
+DEVICEMOUNTPOINTS=`udisksctl info -b ${SELECT_USB2} | grep MountPoints: | sed "s|.*[[:space:]]||"`
 
 if [ "$DEVICEMOUNTPOINTS" ]; then
-   LANG=C udiskctl unmount -b ${SELECT_USB1} || { 
-	errorAndExit $"Error: fail to umount the usb key (${SELECT_USB1})"
+   LANG=C udiskctl unmount -b ${SELECT_USB2} || { 
+	errorAndExit $"Error: fail to umount the usb key (${SELECT_USB2})"
    }
 fi
 set_pbar 2
@@ -247,17 +215,22 @@ if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"parted\" "$"exit with error (see $LOGFILE)"
 fi
 # EFI partition
-sudo parted -s -a optimal -- $SELECT_USB mkpart primary fat32 0 20M &>>$LOGFILE
+sudo parted -s -a optimal -- $SELECT_USB mkpart primary hfs+ 0 20M &>>$LOGFILE
+if [ "$?" != "0" ]; then
+   errorAndExit $"Error:"" \"parted\" "$"exit with error (see $LOGFILE)"
+fi
+# EFI partition
+sudo parted -s -a optimal -- $SELECT_USB mkpart primary fat32 20M 40M &>>$LOGFILE
 if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"parted\" "$"exit with error (see $LOGFILE)"
 fi
 # openmamba partition
-sudo parted -s -a optimal -- $SELECT_USB mkpart primary ext4 20M -1 &>>$LOGFILE
+sudo parted -s -a optimal -- $SELECT_USB mkpart primary ext4 40M -1 &>>$LOGFILE
 if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"parted\" "$"exit with error (see $LOGFILE)"
 fi
 # boot flag on openmamba partition
-sudo parted -s $SELECT_USB set 2 boot on &>>$LOGFILE
+sudo parted -s $SELECT_USB set 3 boot on &>>$LOGFILE
 if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"parted\" "$"exit with error (see $LOGFILE)"
 fi
@@ -266,11 +239,15 @@ set_pbar 5
 
 set_status $"Formatting $SELECT_USB..."
 echo $"Formatting $SELECT_USB..."
-sudo mkfs.vfat ${SELECT_USB1} -n EFI &>>$LOGFILE
+sudo mkfs.hfsplus ${SELECT_USB1} -v EFI_MAC &>>$LOGFILE
+if [ "$?" != "0" ]; then
+   errorAndExit $"Error:"" \"mkfs.hfsplus\" "$"exit with error (see $LOGFILE)"
+fi
+sudo mkfs.vfat ${SELECT_USB2} -n EFI &>>$LOGFILE
 if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"mkfs.vfat\" "$"exit with error (see $LOGFILE)"
 fi
-sudo mkfs.ext4 ${SELECT_USB2} -L openmamba_live &>>$LOGFILE
+sudo mkfs.ext4 ${SELECT_USB3} -L openmamba_live &>>$LOGFILE
 if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"mkfs.ext4\" "$"exit with error (see $LOGFILE)"
 fi
@@ -284,11 +261,18 @@ LANG=C udisksctl mount -b ${SELECT_USB2} &>>$LOGFILE
 if [ "$?" != "0" ]; then
    errorAndExit $"Error:"" \"udisks --mount\" "$"exit with error (see $LOGFILE)"
 fi
+LANG=C udisksctl mount -b ${SELECT_USB3} &>>$LOGFILE
+if [ "$?" != "0" ]; then
+   errorAndExit $"Error:"" \"udisks --mount\" "$"exit with error (see $LOGFILE)"
+fi
 set_pbar 30
 
-# Riceve la mountdir della chiavetta da dbus
-MOUNTDIR_EFI=`udisksctl info -b ${SELECT_USB1} | grep -m1 MountPoints: | sed "s|.*[[:space:]]||"`
+MOUNTDIR_EFI_MAC=`udisksctl info -b ${SELECT_USB1} | grep -m1 MountPoints: | sed "s|.*[[:space:]]||"`
+if [ ! -d "$MOUNTDIR_EFI_MAC" ]; then
+   errorAndExit $"Error: unable to found usb mount path"
+fi
 
+MOUNTDIR_EFI=`udisksctl info -b ${SELECT_USB2} | grep -m1 MountPoints: | sed "s|.*[[:space:]]||"`
 if [ ! -d "$MOUNTDIR_EFI" ]; then
    errorAndExit $"Error: unable to found usb mount path"
 fi
@@ -310,9 +294,7 @@ if [ -d /usr/lib/grub/i386-efi ]; then
    }
 fi
 
-# Riceve la mountdir della chiavetta da dbus
-MOUNTDIR=`udisksctl info -b ${SELECT_USB2} | grep -m1 MountPoints: | sed "s|.*[[:space:]]||"`
-
+MOUNTDIR=`udisksctl info -b ${SELECT_USB3} | grep -m1 MountPoints: | sed "s|.*[[:space:]]||"`
 if [ ! -d "$MOUNTDIR" ]; then
    errorAndExit $"Error: unable to found usb mount path"
 fi
@@ -394,6 +376,9 @@ else
 fi
 set_pbar 85
 
+cp -a $MOUNTDIR_EFI/EFI $MOUNTDIR_EFI_MAC
+hfs-bless $MOUNTDIR_EFI_MAC/EFI/BOOT/bootia32.efi
+
 set_status $"Writing bootloader..."
 echo $"Writing bootloader..."
 sudo extlinux --install boot
@@ -411,6 +396,9 @@ LANG=C udisksctl unmount -b ${SELECT_USB1} || {
 LANG=C udisksctl unmount -b ${SELECT_USB2} || {
 	errorAndExit $"Error: fail to umount the usb key (${SELECT_USB2})"
 }
+LANG=C udisksctl unmount -b ${SELECT_USB3} || {
+	errorAndExit $"Error: fail to umount the usb key (${SELECT_USB3})"
+}
 
 # WARNING: calling install-mbr after unmounting to prevent problems of FAT since EFI partition introduction
 sudo install-mbr $SELECT_USB