diff --git a/README.md b/README.md
index baf22e5..9f2d298 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,8 @@
 2023.07.31
 
 - 尝试修复部分机器重启机器后失联的情况
+- 增加自动时间校准功能
+- 加速系统熵计算
 
 [更新日志](CHANGELOG.md)
 
diff --git a/scripts/install_pve.sh b/scripts/install_pve.sh
index 42b2464..ad8d6a5 100644
--- a/scripts/install_pve.sh
+++ b/scripts/install_pve.sh
@@ -858,8 +858,12 @@ elif [ "$system_arch" = "arch" ]; then
 fi
 
 # 备份网络设置
-cp /etc/network/interfaces /etc/network/interfaces.bak
-cp /etc/network/interfaces.new /etc/network/interfaces.new.bak
+if [ -f /etc/network/interfaces ]; then
+    cp /etc/network/interfaces /etc/network/interfaces.bak
+fi
+if [ -f /etc/network/interfaces.new ]; then
+    cp /etc/network/interfaces.new /etc/network/interfaces.new.bak
+fi
 rebuild_interfaces
 
 # 下载pve