diff --git a/docs/introduction/build_system.md b/docs/introduction/build_system.md
index 57dff27d0..17962793a 100644
--- a/docs/introduction/build_system.md
+++ b/docs/introduction/build_system.md
@@ -241,4 +241,6 @@ make run-docker
 
 :::{note}
 如果您需要在vnc中运行DragonOS，请在上述命令后加上`-vnc`后缀。如：`make run-vnc`
+
+qemu虚拟机将在5900端口监听vnc连接。您可以使用vnc viewer或者Remmina连接至qemu虚拟机。
 :::
diff --git a/tools/bootstrap.sh b/tools/bootstrap.sh
index a6d7347a5..9667be242 100644
--- a/tools/bootstrap.sh
+++ b/tools/bootstrap.sh
@@ -142,7 +142,7 @@ rustInstall() {
 		rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
         rustup component add llvm-tools-preview
 		rustup target add x86_64-unknown-none
-		cargo install dadk
+		
 		echo "Rust已经成功的在您的计算机上安装！请运行 source ~/.cargo/env 以使rust在当前窗口生效！"
 	fi
 }
@@ -206,6 +206,9 @@ else
 	fi
 fi
 
+# 安装dadk
+cargo install dadk || exit 1
+
 # 创建磁盘镜像
 bash create_hdd_image.sh
 # 编译安装GCC交叉编译工具链