diff --git a/backend/src/os_install/mod.rs b/backend/src/os_install/mod.rs
index 3edfa2d97..36314c11d 100644
--- a/backend/src/os_install/mod.rs
+++ b/backend/src/os_install/mod.rs
@@ -153,18 +153,24 @@ pub async fn execute(
         {
             if let Err(e) = async {
                 // cp -r ${guard}/config /tmp/config
-                Command::new("cp")
-                    .arg("-r")
-                    .arg(guard.as_ref().join("config"))
-                    .arg("/tmp/config.bak")
-                    .invoke(crate::ErrorKind::Filesystem)
-                    .await?;
                 if tokio::fs::metadata(guard.as_ref().join("config/upgrade"))
                     .await
                     .is_ok()
                 {
                     tokio::fs::remove_file(guard.as_ref().join("config/upgrade")).await?;
                 }
+                if tokio::fs::metadata(guard.as_ref().join("config/disk.guid"))
+                    .await
+                    .is_ok()
+                {
+                    tokio::fs::remove_file(guard.as_ref().join("config/disk.guid")).await?;
+                }
+                Command::new("cp")
+                    .arg("-r")
+                    .arg(guard.as_ref().join("config"))
+                    .arg("/tmp/config.bak")
+                    .invoke(crate::ErrorKind::Filesystem)
+                    .await?;
                 guard.unmount().await
             }
             .await