diff --git a/build/Dockerfile b/build/Dockerfile
index 467fd94d..76155cee 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -31,7 +31,7 @@ RUN if [ ${TARGETARCH} = arm ]; then ARCH=armhf; elif [ ${TARGETARCH} = arm64 ];
     && chmod +x /usr/local/bin/ttyd \
     && adduser kvmd --gecos "" --disabled-password \
     && ln -sf /usr/share/tesseract-ocr/*/tessdata /usr/share/tessdata \
-    && mkdir -p /etc/kvmd_backup/override.d /var/lib/kvmd/msd /var/lib/kvmd/pst/data /opt/vc/bin /run/kvmd /tmp/kvmd-nginx \
+    && mkdir -p /etc/kvmd_backup/override.d /var/lib/kvmd/msd/images /var/lib/kvmd/msd/meta /var/lib/kvmd/pst/data /opt/vc/bin /run/kvmd /tmp/kvmd-nginx \
     && touch /run/kvmd/ustreamer.sock
 
 
diff --git a/build/build_img.sh b/build/build_img.sh
index 3e1a48aa..1bd803c2 100644
--- a/build/build_img.sh
+++ b/build/build_img.sh
@@ -15,7 +15,7 @@ SRCPATH=../src
 ROOTFS=/tmp/rootfs
 $SRCPATH/image/onecloud/AmlImg_v0.3.1_linux_amd64 unpack $SRCPATH/image/onecloud/Armbian_by-SilentWind_24.5.0-trunk_Onecloud_bookworm_legacy_5.9.0-rc7_minimal.burn.img $SRCPATH/tmp
 simg2img $SRCPATH/tmp/7.rootfs.PARTITION.sparse $SRCPATH/tmp/rootfs.img
-dd if=/dev/zero of=/tmp/add.img bs=1M count=1024 && cat /tmp/add.img >> $SRCPATH/tmp/rootfs.img && rm /tmp/add.img
+dd if=/dev/zero of=/tmp/add.img bs=1M count=800 && cat /tmp/add.img >> $SRCPATH/tmp/rootfs.img && rm /tmp/add.img
 e2fsck -f $SRCPATH/tmp/rootfs.img && resize2fs $SRCPATH/tmp/rootfs.img
 
 #挂载镜像文件
@@ -27,7 +27,7 @@ sudo mount -o bind /dev $ROOTFS/dev || exit -1
 
 #准备文件
 sudo mkdir -p $ROOTFS/etc/kvmd/override.d $ROOTFS/etc/kvmd/vnc $ROOTFS/var/lib/kvmd/msd $ROOTFS/opt/vc/bin $ROOTFS/usr/share/kvmd \
-    $ROOTFS/usr/share/janus/javascript $ROOTFS/usr/lib/ustreamer/janus $ROOTFS/run/kvmd
+    $ROOTFS/usr/share/janus/javascript $ROOTFS/usr/lib/ustreamer/janus $ROOTFS/run/kvmd $ROOTFS/var/lib/kvmd/msd/images $ROOTFS/var/lib/kvmd/msd/meta
 sudo cp -r ../One-KVM $ROOTFS/
 sudo cp $SRCPATH/image/onecloud/rc.local $ROOTFS/etc/
 sudo cp -r $ROOTFS/One-KVM/configs/kvmd/* $ROOTFS/One-KVM/configs/nginx $ROOTFS/One-KVM/configs/janus \
@@ -103,6 +103,8 @@ sudo chroot --userspec "root:root" $ROOTFS bash -c " \
     && sed -i 's/device: \/dev\/ttyUSB0//g' /etc/kvmd/override.yaml \
     && sed -i 's/8080/80/g' /etc/kvmd/override.yaml \
     && sed -i 's/4430/443/g' /etc/kvmd/override.yaml \
+    && sed -i 's/#type: otg/type: otg/g' /etc/kvmd/override.yaml \
+    && chown kvmd -R /var/lib/kvmd/msd/ \
 	&& sed -i 's/localhost.localdomain/onecloud/g' /etc/kvmd/meta.yaml \
     && systemctl enable kvmd kvmd-otg kvmd-nginx kvmd-vnc kvmd-ipmi kvmd-webterm kvmd-janus \
     && systemctl disable nginx janus \
diff --git a/build/init.sh b/build/init.sh
index 18cdbe8f..9509ee0a 100755
--- a/build/init.sh
+++ b/build/init.sh
@@ -19,7 +19,7 @@ if [ ! -f /etc/kvmd/.init_flag ]; then
         && /usr/share/kvmd/kvmd-gencert --do-the-thing --vnc \
         || echo -e "${RED}One-KVM config moving and self-signed SSL certificates init failed.${NC}"
    
-    if [ "$NOSSL" = 1 ]; then
+    if [ "$NOSSL" == 1 ]; then
         echo -e "${GREEN}One-KVM self-signed SSL is disabled.${NC}" \
         && python -m kvmd.apps.ngxmkconf /etc/kvmd/nginx/nginx.conf.mako /etc/kvmd/nginx/nginx.conf  -o nginx/https/enabled=false \
         || echo -e "${RED}One-KVM nginx config init failed.${NC}"
@@ -27,8 +27,7 @@ if [ ! -f /etc/kvmd/.init_flag ]; then
         python -m kvmd.apps.ngxmkconf /etc/kvmd/nginx/nginx.conf.mako /etc/kvmd/nginx/nginx.conf \
         || echo -e "${RED}One-KVM nginx config init failed.${NC}"
     fi
-
-    
+   
     if [ "$NOAUTH" == "1" ]; then
         sed -i "s/enabled: true/enabled: false/g" /etc/kvmd/override.yaml \
         && echo -e "${GREEN}One-KVM auth is disabled.${NC}"
@@ -121,6 +120,12 @@ EOF
         echo -e "${YELLOW} USERNAME and PASSWORD environment variables is not set, using defalut(admin/admin).${NC}"
     fi
 
+    if [ "$NOMSD" == 1 ]; then
+        echo -e "${GREEN}One-KVM MSD is disabled.${NC}"
+    else
+        sed -i "s/#type: otg/type: otg/g" /etc/kvmd/override.yaml
+    fi
+    
     touch /etc/kvmd/.init_flag
 fi
 
diff --git a/configs/kvmd/main.yaml b/configs/kvmd/main.yaml
index cd1e9a72..6d60dcf2 100644
--- a/configs/kvmd/main.yaml
+++ b/configs/kvmd/main.yaml
@@ -16,7 +16,7 @@ kvmd:
         type: gpio
 
     msd:
-        type: otg
+        type: disabled
 
     streamer:
         quality: 0
diff --git a/configs/kvmd/override.yaml b/configs/kvmd/override.yaml
index 9ec6ea73..e7d6e61b 100644
--- a/configs/kvmd/override.yaml
+++ b/configs/kvmd/override.yaml
@@ -21,7 +21,8 @@ kvmd:
             device: /dev/kvmd-hid-mouse-alt
 
     msd:
-        type: disabled
+        #type: otg
+        remount_cmd: /bin/true
 
     ocr:
         langs:
diff --git a/kvmd/apps/otg/__init__.py b/kvmd/apps/otg/__init__.py
index 504b6a34..a7b304ff 100644
--- a/kvmd/apps/otg/__init__.py
+++ b/kvmd/apps/otg/__init__.py
@@ -52,8 +52,12 @@ def _mkdir(path: str) -> None:
     os.mkdir(path)
 
 
-def _chown(path: str, user: str) -> None:
-    get_logger().info("CHOWN --- %s - %s", user, path)
+def _chown(path: str, user: str, optional: bool=False) -> None:
+    logger = get_logger()
+    if optional and not os.access(path, os.F_OK):
+        logger.info("CHOWN --- %s - [SKIPPED] %s", user, path)
+        return
+    logger.info("CHOWN --- %s - %s", user, path)
     shutil.chown(path, user)
 
 
@@ -187,7 +191,7 @@ class _GadgetConfig:
             _chown(join(func_path, "lun.0/cdrom"), user)
             _chown(join(func_path, "lun.0/ro"), user)
             _chown(join(func_path, "lun.0/file"), user)
-            _chown(join(func_path, "lun.0/forced_eject"), user)
+            _chown(join(func_path, "lun.0/forced_eject"), user, optional=True)
         if start:
             _symlink(func_path, join(self.__profile_path, func))
         name = ("Mass Storage Drive" if self.__msd_instance == 0 else f"Extra Drive #{self.__msd_instance}")
diff --git a/kvmd/apps/otgmsd/__init__.py b/kvmd/apps/otgmsd/__init__.py
index abe2400c..0fd0fbe6 100644
--- a/kvmd/apps/otgmsd/__init__.py
+++ b/kvmd/apps/otgmsd/__init__.py
@@ -34,6 +34,9 @@ from .. import init
 
 
 # =====
+def _has_param(gadget: str, instance: int, param: str) -> bool:
+    return os.access(_get_param_path(gadget, instance, param), os.F_OK)
+
 def _get_param_path(gadget: str, instance: int, param: str) -> str:
     return usb.get_gadget_path(gadget, usb.G_FUNCTIONS, f"mass_storage.usb{instance}/lun.0", param)
 
@@ -83,12 +86,15 @@ def main(argv: (list[str] | None)=None) -> None:
     if config.kvmd.msd.type != "otg":
         raise SystemExit(f"Error: KVMD MSD not using 'otg'"
                          f" (now configured {config.kvmd.msd.type!r})")
-
+    has_param = (lambda param: _has_param(config.otg.gadget, options.instance, param))
     set_param = (lambda param, value: _set_param(config.otg.gadget, options.instance, param, value))
     get_param = (lambda param: _get_param(config.otg.gadget, options.instance, param))
 
     if options.eject:
-        set_param("forced_eject", "")
+        if has_param("forced_eject"):
+            set_param("forced_eject", "")
+        else:
+            set_param("file", "")
 
     if options.set_cdrom is not None:
         set_param("cdrom", str(int(options.set_cdrom)))
diff --git a/kvmd/fstab.py b/kvmd/fstab.py
index 4ab3163c..e7da2de3 100644
--- a/kvmd/fstab.py
+++ b/kvmd/fstab.py
@@ -48,7 +48,11 @@ def find_pst() -> Partition:
 def _find_single(part_type: str) -> Partition:
     parts = _find_partitions(part_type, True)
     if len(parts) == 0:
-        raise RuntimeError(f"Can't find {part_type!r} mountpoint")
+        if os.path.exists('/var/lib/kvmd/msd'):
+            #set default value
+            parts = [Partition(mount_path='/var/lib/kvmd/msd', root_path='/var/lib/kvmd/msd', user='kvmd')]
+        else:
+            raise RuntimeError(f"Can't find {part_type!r} mountpoint")
     return parts[0]
 
 
diff --git a/kvmd/plugins/msd/otg/drive.py b/kvmd/plugins/msd/otg/drive.py
index c9a393fc..998355e4 100644
--- a/kvmd/plugins/msd/otg/drive.py
+++ b/kvmd/plugins/msd/otg/drive.py
@@ -53,7 +53,7 @@ class Drive:
     # =====
 
     def set_image_path(self, path: str) -> None:
-        if path:
+        if path or not self.__has_param("forced_eject"):
             self.__set_param("file", path)
         else:
             self.__set_param("forced_eject", "")
@@ -75,7 +75,9 @@ class Drive:
         return (not int(self.__get_param("ro")))
 
     # =====
-
+    def __has_param(self, param: str) -> bool:
+        return os.access(os.path.join(self.__lun_path, param), os.F_OK)
+    
     def __get_param(self, param: str) -> str:
         with open(os.path.join(self.__lun_path, param)) as file:
             return file.read().strip()