diff --git a/common.sh b/common.sh
index 8c5407dcf7..688eac36d1 100644
--- a/common.sh
+++ b/common.sh
@@ -53,12 +53,12 @@ compile_uboot (){
 		
 		eval 'make $MAKEPARA $CTHREADS CROSS_COMPILE="$CCACHE arm-linux-gnueabihf-" 2>&1' \
 		${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
-		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling u-boot..." 20 80'} \
+		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling u-boot..." $TTY_Y $TTY_X'} \
 		${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 	else
 		eval 'make $MAKEPARA $CTHREADS $BOOTCONFIG CROSS_COMPILE="$CCACHE arm-linux-gnueabihf-" 2>&1' \
 		${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
-		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling u-boot..." 20 80'} \
+		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling u-boot..." $TTY_Y $TTY_X'} \
 		${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 	fi
 
@@ -224,7 +224,7 @@ compile_kernel (){
 
 	eval 'make $CTHREADS ARCH=arm CROSS_COMPILE="$CCACHE arm-linux-gnueabihf-" zImage modules 2>&1' \
 		${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
-		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling kernel..." 20 80'} \
+		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling kernel..." $TTY_Y $TTY_X'} \
 		${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 	if [ ${PIPESTATUS[0]} -ne 0 ] || [ ! -f arch/arm/boot/zImage ]; then
@@ -232,7 +232,7 @@ compile_kernel (){
 	fi
 	eval 'make $CTHREADS ARCH=arm CROSS_COMPILE="$CCACHE arm-linux-gnueabihf-" dtbs 2>&1' \
 		${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
-		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling Device Tree..." 20 80'} \
+		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Compiling Device Tree..." $TTY_Y $TTY_X'} \
 		${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 	if [ ${PIPESTATUS[0]} -ne 0 ]; then
@@ -252,7 +252,7 @@ compile_kernel (){
 	eval 'make -j1 $KERNEL_PACKING KDEB_PKGVERSION=$REVISION LOCALVERSION="-"$LINUXFAMILY KBUILD_DEBARCH=armhf ARCH=arm DEBFULLNAME="$MAINTAINER" \
 		DEBEMAIL="$MAINTAINERMAIL" CROSS_COMPILE="$CCACHE arm-linux-gnueabihf-" 2>&1 ' \
 		${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/compilation.log'} \
-		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Creating kernel packages..." 20 80'} \
+		${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Creating kernel packages..." $TTY_Y $TTY_X'} \
 		${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 	# we need a name
diff --git a/configuration.sh b/configuration.sh
index da84248f38..f30822f8fc 100644
--- a/configuration.sh
+++ b/configuration.sh
@@ -51,8 +51,8 @@ MISC5="https://github.com/hglm/a10disp/" # Display changer for Allwinner
 MISC5_DIR="sunxi-display-changer" # local directory
 MISC6="https://github.com/porjo/mt7601/" # Display changer for Allwinner
 MISC6_DIR="mt7601" # local directory
-
-
+TTY_X=$(($(stty size| awk '{print $2}')-6)) # determine terminal width
+TTY_Y=$(($(stty size| awk '{print $1}')-6)) # determine terminal height
 
 # board configurations
 
diff --git a/debootstrap-ng.sh b/debootstrap-ng.sh
index 0350f92277..58997940fa 100644
--- a/debootstrap-ng.sh
+++ b/debootstrap-ng.sh
@@ -179,7 +179,7 @@ create_rootfs_cache()
 		display_alert "Installing base system" "Stage 1/2" "info"
 		eval 'debootstrap --include=debconf-utils,locales --arch=armhf --foreign $RELEASE $DEST/cache/sdcard/ $apt_mirror' \
 			${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/debootstrap.log'} \
-			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Debootstrap (stage 1/2)..." 20 80'} \
+			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Debootstrap (stage 1/2)..." $TTY_Y $TTY_X'} \
 			${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 		cp /usr/bin/qemu-arm-static $DEST/cache/sdcard/usr/bin/
@@ -190,7 +190,7 @@ create_rootfs_cache()
 		display_alert "Installing base system" "Stage 2/2" "info"
 		eval 'chroot $DEST/cache/sdcard /bin/bash -c "/debootstrap/debootstrap --second-stage"' \
 			${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/debootstrap.log'} \
-			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Debootstrap (stage 2/2)..." 20 80'} \
+			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Debootstrap (stage 2/2)..." $TTY_Y $TTY_X'} \
 			${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 		# stage: prepare chroot environment to install extra packages
@@ -250,14 +250,14 @@ EOF
 		display_alert "Updating package list" "$RELEASE" "info"
 		eval 'LC_ALL=C LANG=C chroot $DEST/cache/sdcard /bin/bash -c "apt-get -y $apt_extra update"' \
 			${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/debootstrap.log'} \
-			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Updating package lists..." 20 80'} \
+			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Updating package lists..." $TTY_Y $TTY_X'} \
 			${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 		# stage: install additional packages
 		display_alert "Installing packages for" "Armbian" "info"
 		eval 'LC_ALL=C LANG=C chroot $DEST/cache/sdcard /bin/bash -c "DEBIAN_FRONTEND=noninteractive apt-get -y -q $apt_extra --no-install-recommends install $PACKAGE_LIST"' \
 			${PROGRESS_LOG_TO_FILE:+' | tee -a $DEST/debug/debootstrap.log'} \
-			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Installing Armbian system..." 20 80'} \
+			${OUTPUT_DIALOG:+' | dialog --backtitle "$backtitle" --progressbox "Installing Armbian system..." $TTY_Y $TTY_X'} \
 			${OUTPUT_VERYSILENT:+' >/dev/null 2>/dev/null'}
 
 		# DEBUG: print free space
diff --git a/debootstrap.sh b/debootstrap.sh
index ef0b21399f..e562a170ad 100644
--- a/debootstrap.sh
+++ b/debootstrap.sh
@@ -91,7 +91,7 @@ if [ -f "$cache_fname" ]; then
 	rm $DEST/cache/sdcard/etc/resolv.conf
 	echo "nameserver 8.8.8.8" > $DEST/cache/sdcard/etc/resolv.conf
 	if [ "$diff" -gt "3" ]; then
-		chroot $DEST/cache/sdcard /bin/bash -c "apt-get update" | dialog --backtitle "$backtitle" --title "Force package update ..." --progressbox 20 70
+		chroot $DEST/cache/sdcard /bin/bash -c "apt-get update" | dialog --backtitle "$backtitle" --title "Force package update ..." --progressbox $TTY_Y $TTY_X
 	fi
 fi
 
@@ -100,7 +100,7 @@ if [ ! -f "$cache_fname" ]; then
 
 # debootstrap base system
 [[ $DISTRIBUTION == "Debian" ]] && local redir="http://httpredir.debian.org/debian/"
-debootstrap --include=openssh-server,debconf-utils --arch=armhf --foreign $RELEASE $DEST/cache/sdcard/ $redir | dialog --backtitle "$backtitle" --title "Debootstrap $DISTRIBUTION $RELEASE base system to image template ..." --progressbox 20 70
+debootstrap --include=openssh-server,debconf-utils --arch=armhf --foreign $RELEASE $DEST/cache/sdcard/ $redir | dialog --backtitle "$backtitle" --title "Debootstrap $DISTRIBUTION $RELEASE base system to image template ..." --progressbox $TTY_Y $TTY_X
 
 # we need emulator for second stage
 cp /usr/bin/qemu-arm-static $DEST/cache/sdcard/usr/bin/
@@ -113,7 +113,7 @@ test -d "$d" || mkdir -p "$d" && cp /usr/share/keyrings/debian-archive-keyring.g
 test -e /proc/sys/fs/binfmt_misc/qemu-arm || update-binfmts --enable qemu-arm
 
 # debootstrap second stage
-chroot $DEST/cache/sdcard /bin/bash -c "/debootstrap/debootstrap --second-stage" | dialog --backtitle "$backtitle" --title "Installing $DISTRIBUTION $RELEASE base system to image template ..." --progressbox 20 70
+chroot $DEST/cache/sdcard /bin/bash -c "/debootstrap/debootstrap --second-stage" | dialog --backtitle "$backtitle" --title "Installing $DISTRIBUTION $RELEASE base system to image template ..." --progressbox $TTY_Y $TTY_X
 
 # mount proc, sys and dev
 mount -t proc chproc $DEST/cache/sdcard/proc
@@ -131,7 +131,7 @@ chroot $DEST/cache/sdcard /bin/bash -c "cat armbian.key | apt-key add -"
 rm $DEST/cache/sdcard/armbian.key
 
 # update and upgrade
-LC_ALL=C LANGUAGE=C LANG=C chroot $DEST/cache/sdcard /bin/bash -c "apt-get -y update" | dialog --progressbox "Updating package databases ..." 20 70
+LC_ALL=C LANGUAGE=C LANG=C chroot $DEST/cache/sdcard /bin/bash -c "apt-get -y update" | dialog --progressbox "Updating package databases ..." $TTY_Y $TTY_X
 
 # generate locales and install packets
 display_alert "Install locales" "$DEST_LANG" "info"