diff --git a/system/lib/wasmfs/backend.h b/system/lib/wasmfs/backend.h
index d8e584c01136a..60daf884d5746 100644
--- a/system/lib/wasmfs/backend.h
+++ b/system/lib/wasmfs/backend.h
@@ -21,6 +21,8 @@ class Backend {
   virtual std::shared_ptr<Directory> createDirectory(mode_t mode) = 0;
   virtual std::shared_ptr<Symlink> createSymlink(std::string target) = 0;
 
+  virtual bool shouldMountSpecialFiles() { return true; }
+
   virtual ~Backend() = default;
 };
 
diff --git a/system/lib/wasmfs/backends/node_backend.cpp b/system/lib/wasmfs/backends/node_backend.cpp
index a3a7ad19b32f3..5358ca3bc65cf 100644
--- a/system/lib/wasmfs/backends/node_backend.cpp
+++ b/system/lib/wasmfs/backends/node_backend.cpp
@@ -294,6 +294,8 @@ class NodeBackend : public Backend {
   std::shared_ptr<Symlink> createSymlink(std::string target) override {
     WASMFS_UNREACHABLE("TODO: implement NodeBackend::createSymlink");
   }
+
+  virtual bool shouldMountSpecialFiles() override { return false; }
 };
 
 // TODO: symlink
diff --git a/system/lib/wasmfs/wasmfs.cpp b/system/lib/wasmfs/wasmfs.cpp
index 7a771a8ff4bd0..8cc68ca3053bf 100644
--- a/system/lib/wasmfs/wasmfs.cpp
+++ b/system/lib/wasmfs/wasmfs.cpp
@@ -106,8 +106,13 @@ std::shared_ptr<Directory> WasmFS::initRootDirectory() {
   // The root directory is its own parent.
   lockedRoot.setParent(rootDirectory);
 
+  // Don't mount special files if not needed (e.g. in NODERAWFS mode).
+  if (!rootBackend->shouldMountSpecialFiles()) {
+    return rootDirectory;
+  }
+
   // If the /dev/ directory does not already exist, create it. (It may already
-  // exist in NODERAWFS mode, or if those files have been preloaded.)
+  // exist if those files have been preloaded.)
   auto devDir = lockedRoot.insertDirectory("dev", S_IRUGO | S_IXUGO);
   if (devDir) {
     auto lockedDev = devDir->locked();
diff --git a/test/codesize/test_codesize_cxx_wasmfs.json b/test/codesize/test_codesize_cxx_wasmfs.json
index 9d83f3e7f89b1..579edead6e4ca 100644
--- a/test/codesize/test_codesize_cxx_wasmfs.json
+++ b/test/codesize/test_codesize_cxx_wasmfs.json
@@ -1,10 +1,10 @@
 {
   "a.out.js": 7023,
   "a.out.js.gz": 3310,
-  "a.out.nodebug.wasm": 172714,
-  "a.out.nodebug.wasm.gz": 63316,
-  "total": 179737,
-  "total_gz": 66626,
+  "a.out.nodebug.wasm": 172741,
+  "a.out.nodebug.wasm.gz": 63348,
+  "total": 179764,
+  "total_gz": 66658,
   "sent": [
     "__cxa_throw",
     "_abort_js",
diff --git a/test/codesize/test_codesize_files_wasmfs.json b/test/codesize/test_codesize_files_wasmfs.json
index 327251e75f6b3..cfb4980397a26 100644
--- a/test/codesize/test_codesize_files_wasmfs.json
+++ b/test/codesize/test_codesize_files_wasmfs.json
@@ -1,10 +1,10 @@
 {
   "a.out.js": 5465,
   "a.out.js.gz": 2575,
-  "a.out.nodebug.wasm": 58418,
-  "a.out.nodebug.wasm.gz": 18067,
-  "total": 63883,
-  "total_gz": 20642,
+  "a.out.nodebug.wasm": 58443,
+  "a.out.nodebug.wasm.gz": 18094,
+  "total": 63908,
+  "total_gz": 20669,
   "sent": [
     "a (emscripten_date_now)",
     "b (emscripten_err)",
diff --git a/test/test_other.py b/test/test_other.py
index f5fab92327817..448025913feb2 100644
--- a/test/test_other.py
+++ b/test/test_other.py
@@ -5553,6 +5553,8 @@ def test_fsync(self, args):
   def test_fs_dev_random(self):
     if WINDOWS and self.get_setting('NODERAWFS'):
       self.skipTest('Crashes on Windows and NodeFS')
+    if self.get_setting('NODERAWFS') and self.get_setting('WASMFS'):
+      self.skipTest('https://github.com/emscripten-core/emscripten/issues/24830')
     self.do_runf('fs/test_fs_dev_random.c', 'success')
 
   @parameterized({
@@ -13256,6 +13258,8 @@ def test_unistd_chown(self):
 
   @wasmfs_all_backends
   def test_wasmfs_getdents(self):
+    if self.get_setting('NODERAWFS'):
+      self.skipTest('test expectations assumes /dev is virtualized')
     # Run only in WASMFS for now.
     self.set_setting('FORCE_FILESYSTEM')
     self.do_run_in_out_file_test('wasmfs/wasmfs_getdents.c')