diff --git a/system/lib/wasmfs/backend.h b/system/lib/wasmfs/backend.h
index d8e584c01136a..437b5cb3773f6 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 shouldPopulateRoot() { return true; }
+
   virtual ~Backend() = default;
 };
 
diff --git a/system/lib/wasmfs/backends/node_backend.cpp b/system/lib/wasmfs/backends/node_backend.cpp
index 4bfd0f12cd70a..c408c8d6134ca 100644
--- a/system/lib/wasmfs/backends/node_backend.cpp
+++ b/system/lib/wasmfs/backends/node_backend.cpp
@@ -296,6 +296,8 @@ class NodeBackend : public Backend {
   std::shared_ptr<Symlink> createSymlink(std::string target) override {
     WASMFS_UNREACHABLE("TODO: implement NodeBackend::createSymlink");
   }
+
+  virtual bool shouldPopulateRoot() override { return false; }
 };
 
 // TODO: symlink
diff --git a/system/lib/wasmfs/wasmfs.cpp b/system/lib/wasmfs/wasmfs.cpp
index 7a771a8ff4bd0..0ba1fea8ec016 100644
--- a/system/lib/wasmfs/wasmfs.cpp
+++ b/system/lib/wasmfs/wasmfs.cpp
@@ -106,8 +106,14 @@ std::shared_ptr<Directory> WasmFS::initRootDirectory() {
   // The root directory is its own parent.
   lockedRoot.setParent(rootDirectory);
 
+  // Skip setting up the root directory when not needed (e.g. in NODERAWFS
+  // mode).
+  if (!rootBackend->shouldPopulateRoot()) {
+    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 3fd32b3e1faf4..a829127c25e2a 100644
--- a/test/codesize/test_codesize_cxx_wasmfs.json
+++ b/test/codesize/test_codesize_cxx_wasmfs.json
@@ -1,10 +1,10 @@
 {
   "a.out.js": 6938,
   "a.out.js.gz": 3259,
-  "a.out.nodebug.wasm": 172803,
-  "a.out.nodebug.wasm.gz": 63374,
-  "total": 179741,
-  "total_gz": 66633,
+  "a.out.nodebug.wasm": 172830,
+  "a.out.nodebug.wasm.gz": 63389,
+  "total": 179768,
+  "total_gz": 66648,
   "sent": [
     "__cxa_throw",
     "_abort_js",
diff --git a/test/codesize/test_codesize_files_wasmfs.json b/test/codesize/test_codesize_files_wasmfs.json
index 6ef587b23b45f..e7bbf45a125b6 100644
--- a/test/codesize/test_codesize_files_wasmfs.json
+++ b/test/codesize/test_codesize_files_wasmfs.json
@@ -1,10 +1,10 @@
 {
   "a.out.js": 5372,
   "a.out.js.gz": 2527,
-  "a.out.nodebug.wasm": 58520,
-  "a.out.nodebug.wasm.gz": 18225,
-  "total": 63892,
-  "total_gz": 20752,
+  "a.out.nodebug.wasm": 58545,
+  "a.out.nodebug.wasm.gz": 18255,
+  "total": 63917,
+  "total_gz": 20782,
   "sent": [
     "a (emscripten_date_now)",
     "b (emscripten_err)",
diff --git a/test/test_other.py b/test/test_other.py
index 081ef40d60032..5f426752a2ee3 100644
--- a/test/test_other.py
+++ b/test/test_other.py
@@ -5610,6 +5610,8 @@ 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', 'done\n')
 
   @parameterized({
@@ -13476,6 +13478,8 @@ 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')