diff --git a/homeassistant/components/systemmonitor/util.py b/homeassistant/components/systemmonitor/util.py
index 2a4b889bdde..dec0508bb64 100644
--- a/homeassistant/components/systemmonitor/util.py
+++ b/homeassistant/components/systemmonitor/util.py
@@ -21,12 +21,6 @@ def get_all_disk_mounts(
     """Return all disk mount points on system."""
     disks: set[str] = set()
     for part in psutil_wrapper.psutil.disk_partitions(all=True):
-        if os.name == "nt":
-            if "cdrom" in part.opts or part.fstype == "":
-                # skip cd-rom drives with no disk in it; they may raise
-                # ENOENT, pop-up a Windows GUI error for a non-ready
-                # partition or just hang.
-                continue
         if part.fstype in SKIP_DISK_TYPES:
             # Ignore disks which are memory
             continue
diff --git a/tests/components/systemmonitor/conftest.py b/tests/components/systemmonitor/conftest.py
index 5f0a7a5c76d..a5aa15d8b0a 100644
--- a/tests/components/systemmonitor/conftest.py
+++ b/tests/components/systemmonitor/conftest.py
@@ -176,7 +176,6 @@ def mock_psutil(mock_process: list[MockProcess]) -> Generator:
         mock_psutil.disk_partitions.return_value = [
             sdiskpart("test", "/", "ext4", ""),
             sdiskpart("test2", "/media/share", "ext4", ""),
-            sdiskpart("test3", "/incorrect", "", ""),
             sdiskpart("hosts", "/etc/hosts", "bind", ""),
             sdiskpart("proc", "/proc/run", "proc", ""),
         ]
@@ -197,7 +196,6 @@ def mock_os() -> Generator:
         patch("homeassistant.components.systemmonitor.coordinator.os") as mock_os,
         patch("homeassistant.components.systemmonitor.util.os") as mock_os_util,
     ):
-        mock_os_util.name = "nt"
         mock_os.getloadavg.return_value = (1, 2, 3)
         mock_os_util.path.isdir = isdir
         yield mock_os
diff --git a/tests/components/systemmonitor/test_sensor.py b/tests/components/systemmonitor/test_sensor.py
index a5f5e7623e9..9b942257ec1 100644
--- a/tests/components/systemmonitor/test_sensor.py
+++ b/tests/components/systemmonitor/test_sensor.py
@@ -313,19 +313,6 @@ async def test_processor_temperature(
         assert await hass.config_entries.async_unload(mock_config_entry.entry_id)
         await hass.async_block_till_done()
 
-    with patch("sys.platform", "nt"):
-        mock_psutil.sensors_temperatures.return_value = None
-        mock_psutil.sensors_temperatures.side_effect = AttributeError(
-            "sensors_temperatures not exist"
-        )
-        mock_config_entry.add_to_hass(hass)
-        assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
-        await hass.async_block_till_done()
-        temp_entity = hass.states.get("sensor.system_monitor_processor_temperature")
-        assert temp_entity.state == STATE_UNAVAILABLE
-        assert await hass.config_entries.async_unload(mock_config_entry.entry_id)
-        await hass.async_block_till_done()
-
     with patch("sys.platform", "darwin"):
         mock_psutil.sensors_temperatures.return_value = {
             "cpu0-thermal": [shwtemp("cpu0-thermal", 50.0, 60.0, 70.0)]
diff --git a/tests/components/systemmonitor/test_util.py b/tests/components/systemmonitor/test_util.py
index 582707f3574..471f2f9e2cb 100644
--- a/tests/components/systemmonitor/test_util.py
+++ b/tests/components/systemmonitor/test_util.py
@@ -52,7 +52,6 @@ async def test_disk_util(
     mock_psutil.psutil.disk_partitions.return_value = [
         sdiskpart("test", "/", "ext4", ""),  # Should be ok
         sdiskpart("test2", "/media/share", "ext4", ""),  # Should be ok
-        sdiskpart("test3", "/incorrect", "", ""),  # Should be skipped as no type
         sdiskpart(
             "proc", "/proc/run", "proc", ""
         ),  # Should be skipped as in skipped disk types
@@ -62,7 +61,6 @@ async def test_disk_util(
             "tmpfs",
             "",
         ),  # Should be skipped as in skipped disk types
-        sdiskpart("test5", "E:", "cd", "cdrom"),  # Should be skipped as cdrom
     ]
 
     mock_config_entry.add_to_hass(hass)
@@ -71,13 +69,9 @@ async def test_disk_util(
 
     disk_sensor1 = hass.states.get("sensor.system_monitor_disk_free")
     disk_sensor2 = hass.states.get("sensor.system_monitor_disk_free_media_share")
-    disk_sensor3 = hass.states.get("sensor.system_monitor_disk_free_incorrect")
-    disk_sensor4 = hass.states.get("sensor.system_monitor_disk_free_proc_run")
-    disk_sensor5 = hass.states.get("sensor.system_monitor_disk_free_tmpfs")
-    disk_sensor6 = hass.states.get("sensor.system_monitor_disk_free_e")
+    disk_sensor3 = hass.states.get("sensor.system_monitor_disk_free_proc_run")
+    disk_sensor4 = hass.states.get("sensor.system_monitor_disk_free_tmpfs")
     assert disk_sensor1 is not None
     assert disk_sensor2 is not None
     assert disk_sensor3 is None
     assert disk_sensor4 is None
-    assert disk_sensor5 is None
-    assert disk_sensor6 is None