diff --git a/packages/bsp/common/usr/sbin/nand-sata-install b/packages/bsp/common/usr/sbin/nand-sata-install
index 005e9d45b..f9fa9880c 100755
--- a/packages/bsp/common/usr/sbin/nand-sata-install
+++ b/packages/bsp/common/usr/sbin/nand-sata-install
@@ -278,7 +278,7 @@ create_armbian()
 			[[ -f "${TempDir}"/bootfs/boot/boot.ini ]] && sed -e 's,^setenv rootdev.*$,setenv rootdev "'"$targetuuid"'",' -i "${TempDir}"/bootfs/boot/boot.ini
 			[[ -f "${TempDir}"/rootfs/boot/boot.ini ]] && sed -e 's,^setenv rootdev.*$,setenv rootdev "'"$targetuuid"'",' -i "${TempDir}"/rootfs/boot/boot.ini
 		fi
-		mkimage -C none -A arm -T script -d "${TempDir}"/bootfs/boot/boot.cmd "${TempDir}"/bootfs/boot/boot.scr	>/dev/null 2>&1 || (echo "Error"; exit 1)
+		mkimage -C none -A arm -T script -d "${TempDir}"/bootfs/boot/boot.cmd "${TempDir}"/bootfs/boot/boot.scr	>/dev/null 2>&1 || (echo 'Error while creating U-Boot loader image with mkimage' >&2 ; exit 1)
 
 		# fstab adj
 		if [[ "$1" != "$2" ]]; then
@@ -327,7 +327,7 @@ create_armbian()
 			sed -e 's,setenv rootfstype.*,setenv rootfstype '"$FilesystemChoosen"',' -i /boot/boot.cmd
 			sed -e 's,setenv rootfstype.*,setenv rootfstype '"$FilesystemChoosen"',' -i /boot/boot.ini
 		fi
-		[[ -f /boot/boot.cmd ]] && mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr >/dev/null 2>&1 || (echo "Error"; exit 1)
+		[[ -f /boot/boot.cmd ]] && mkimage -C none -A arm -T script -d /boot/boot.cmd /boot/boot.scr >/dev/null 2>&1 || (echo 'Error while creating U-Boot loader image with mkimage' >&2 ; exit 1)
 		mkdir -p "${TempDir}"/rootfs/media/mmc/boot
 		echo "${sduuid}	/media/mmcboot	ext4    ${mountopts[ext4]}" >> "${TempDir}"/rootfs/etc/fstab
 		echo "/media/mmcboot/boot  				/boot		none	bind								0       0" >> "${TempDir}"/rootfs/etc/fstab
@@ -403,7 +403,7 @@ show_nand_warning()
 #
 format_nand()
 {
-	[[ ! -e /dev/nand ]] && echo "NAND error" && exit 1
+	[[ ! -e /dev/nand ]] && echo '/dev/nand does not exist' >&2 && exit 1
 
 	show_nand_warning