diff --git a/app/src/main/java/sh/sar/isodroid/ui/components/FileContextMenu.kt b/app/src/main/java/sh/sar/isodroid/ui/components/FileContextMenu.kt
index 72c3e22..a4a1dfd 100644
--- a/app/src/main/java/sh/sar/isodroid/ui/components/FileContextMenu.kt
+++ b/app/src/main/java/sh/sar/isodroid/ui/components/FileContextMenu.kt
@@ -31,6 +31,7 @@ import sh.sar.isodroid.data.IsoFile
 @Composable
 fun FileContextMenu(
     file: IsoFile,
+    isMounted: Boolean = false,
     onDismiss: () -> Unit,
     onRename: (String) -> Unit,
     onDelete: () -> Unit
@@ -71,10 +72,28 @@ fun FileContextMenu(
             },
             text = {
                 Column {
+                    if (isMounted) {
+                        Text(
+                            text = "This file is currently mounted. Unmount it first to rename or delete.",
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.error,
+                            modifier = Modifier.padding(vertical = 8.dp)
+                        )
+                    }
                     MenuItem(
-                        icon = { Icon(Icons.Default.Edit, contentDescription = null) },
+                        icon = {
+                            Icon(
+                                Icons.Default.Edit,
+                                contentDescription = null,
+                                tint = if (isMounted)
+                                    MaterialTheme.colorScheme.onSurface.copy(alpha = 0.38f)
+                                else
+                                    MaterialTheme.colorScheme.onSurface
+                            )
+                        },
                         text = "Rename",
-                        onClick = { showRenameDialog = true }
+                        enabled = !isMounted,
+                        onClick = { if (!isMounted) showRenameDialog = true }
                     )
                     Spacer(modifier = Modifier.height(8.dp))
                     MenuItem(
@@ -82,12 +101,19 @@ fun FileContextMenu(
                             Icon(
                                 Icons.Default.Delete,
                                 contentDescription = null,
-                                tint = MaterialTheme.colorScheme.error
+                                tint = if (isMounted)
+                                    MaterialTheme.colorScheme.error.copy(alpha = 0.38f)
+                                else
+                                    MaterialTheme.colorScheme.error
                             )
                         },
                         text = "Delete",
-                        textColor = MaterialTheme.colorScheme.error,
-                        onClick = { showDeleteConfirm = true }
+                        textColor = if (isMounted)
+                            MaterialTheme.colorScheme.error.copy(alpha = 0.38f)
+                        else
+                            MaterialTheme.colorScheme.error,
+                        enabled = !isMounted,
+                        onClick = { if (!isMounted) showDeleteConfirm = true }
                     )
                 }
             },
@@ -106,12 +132,13 @@ private fun MenuItem(
     icon: @Composable () -> Unit,
     text: String,
     textColor: androidx.compose.ui.graphics.Color = MaterialTheme.colorScheme.onSurface,
+    enabled: Boolean = true,
     onClick: () -> Unit
 ) {
     Row(
         modifier = Modifier
             .fillMaxWidth()
-            .clickable(onClick = onClick)
+            .clickable(enabled = enabled, onClick = onClick)
             .padding(vertical = 12.dp, horizontal = 8.dp),
         verticalAlignment = Alignment.CenterVertically
     ) {
@@ -120,7 +147,7 @@ private fun MenuItem(
         Text(
             text = text,
             style = MaterialTheme.typography.bodyLarge,
-            color = textColor
+            color = if (enabled) textColor else textColor.copy(alpha = 0.38f)
         )
     }
 }
diff --git a/app/src/main/java/sh/sar/isodroid/ui/screens/MainScreen.kt b/app/src/main/java/sh/sar/isodroid/ui/screens/MainScreen.kt
index e88cafb..73923fe 100644
--- a/app/src/main/java/sh/sar/isodroid/ui/screens/MainScreen.kt
+++ b/app/src/main/java/sh/sar/isodroid/ui/screens/MainScreen.kt
@@ -222,8 +222,11 @@ fun MainScreen(
 
     // File context menu (long press)
     contextMenuFile?.let { file ->
+        val isMounted = uiState.mountStatus.mounted &&
+                        uiState.mountStatus.path == file.path
         FileContextMenu(
             file = file,
+            isMounted = isMounted,
             onDismiss = { contextMenuFile = null },
             onRename = { newName ->
                 viewModel.renameFile(file, newName)