diff --git a/globals.inc b/globals.inc
index a2058934d8d75ce299385c0a85dcace80391a1e8..289f0372e76ea63856e063f406447ad8ec350df7 100755
--- a/globals.inc
+++ b/globals.inc
@@ -23,3 +23,8 @@ DEBUG=true
 #WEB_RPM_REPO_SRV=http://192.168.0.100:8000/risc-v/RPMS/
 WEB_RPM_REPO_SRV=https//isrc.iscas.ac.cn/mirror/fedora/alt/risc-v/RPMS/
 #WEB_RPM_REPO_SYNC=http://192.168.0.104/oelriscv
+
+# Preinstalled packages
+CORE_RPMS="systemd vim coreutils net-tools systemd-udev libssh openssh passwd NetworkManager dnf wget procps-ng dnf-plugins-core"
+BUILD_TOOLS="rpm-build autoconf make gdb dnf-utils git texinfo gcc gcc-c++"
+OBS_RPMS="osc build sudo iputils ntpdate vim cpio curl perl-Compress-Zlib perl-TimeDate perl-Data-Dumper perl-XML-Parser screen psmisc bash binutils bsdtar lzma util-linux openslp lvm2 perl-Digest-MD5 git screen tmux wget expect"
diff --git a/mkfs-oe.sh b/mkfs-oe.sh
index f6ab396f8de4f68c48ebfec6ea814595b7241452..568c15d688368e772ba149d4714de30d825b0756 100755
--- a/mkfs-oe.sh
+++ b/mkfs-oe.sh
@@ -8,18 +8,18 @@
 # in RISC-V system, or x86/aarch64 system that support
 # cross-arch dnf installation.
 
-. globals.inc
+# . globals.inc
 
-CORE_RPMS="systemd vim coreutils net-tools systemd-udev libssh openssh passwd git NetworkManager dnf wget procps-ng dnf-plugins-core rpm-build"
 
+INSTALL_RPMS="$CORE_RPMS $BUILD_TOOLS"
 set -e
 set -x
 
 mkdir -p /var/tmp/
-rm -f /var/tmp/*
+rm -f /var/tmp/oe-rv.raw
 
 # Create parted and formatted disk
-truncate -s 10G /var/tmp/oe-rv.raw
+truncate -s 2G /var/tmp/oe-rv.raw
 losetup -P $(losetup -f) /var/tmp/oe-rv.raw
 loopdev=$(losetup -a | grep oe-rv.raw | awk -F: '{print $1;}')
 fdisk $loopdev << EOF
@@ -33,32 +33,36 @@ EOF
 mkfs -t ext4 ${loopdev}p1
 
 # Create the installroot
-mkdir  /var/tmp/mnt
+mkdir  -p /var/tmp/mnt
 mount -o loop /${loopdev}p1 /var/tmp/mnt
+
 mkdir /var/tmp/mnt/{dev,proc,sys}
-mount -t proc /proc  /var/tmp/mnt/proc
-mount --rbind /sys /var/tmp/mnt/sys
-mount --rbind /dev /var/tmp/mnt/dev 
-mount --make-rslave /var/tmp/mnt/dev
-mount --make-rslave /var/tmp/mnt/sys
+mkdir /var/tmp/mnt/dev/pts
+mount -t proc proc  /var/tmp/mnt/proc
+mount -t sysfs sysfs /var/tmp/mnt/sys
+mount -t devpts pts  /var/tmp/mnt/dev/pts  
+mount -o bind /dev /var/tmp/mnt/dev
 
 rpm --root /var/tmp/mnt --initdb
 
-sed -e "s,@RPMREPOWEBSRV@,$WEB_RPM_REPO_SRV,g" < ./assets/openEuler-rv64.repo.in > /etc/yum.repo.d/oe-riscv.repo
-dnf install  --installroot /var/tmp/mnt --repo oe-rv  $CORE_RPMS -y
 
-echo "Change default passwd to empty"
-sed -i '1s/*//'  /var/tmp/mnt/etc/shadow
+dnf install  --installroot /var/tmp/mnt   $INSTALL_RPMS 
+cp /etc/yum.repos.d/oe-rv.repo /var/tmp/mnt/etc/yum.repos.d/
+
+echo "Set default passwd to openEuler12#$"
+
+echo "root:openEuler12#$" | chpasswd -R /var/tmp/mnt/
 echo openEuler-RISCV-rare > /var/tmp/mnt/etc/hostname
 
 sync
 sleep 5
 
-umount -R /var/tmp/mnt/dev 
-umount -R /var/tmp/mnt/sys
-umount  /var/tmp/mnt/proc
+umount -l /var/tmp/mnt/dev 
+umount -l /var/tmp/mnt/dev/pts
+umount /var/tmp/mnt/sys
+umount /var/tmp/mnt/proc
 umount /var/tmp/mnt
 
 losetup -d $loopdev
-qemu-img convert -f raw -O qcow2 /var/tmp/oe-rv.raw /var/tmp/oe-rv-rare.qcow2
+qemu-img convert -f raw -O qcow2 /var/tmp/oe-rv.raw /var/tmp/oe-rv.qcow2
 rm -rf /var/tmp/oe-rv.raw