diff --git a/tests/test_storage.py b/tests/test_storage.py
index 172d9d3..224878b 100644
--- a/tests/test_storage.py
+++ b/tests/test_storage.py
@@ -1,6 +1,7 @@
 """Tests for unraid_storage tool."""
 
 from collections.abc import Generator
+from typing import get_args
 from unittest.mock import AsyncMock, patch
 
 import pytest
@@ -8,6 +9,13 @@ from conftest import make_tool_fn
 
 from unraid_mcp.core.exceptions import ToolError
 from unraid_mcp.core.utils import format_bytes, format_kb, safe_get
+from unraid_mcp.tools.storage import STORAGE_ACTIONS
+
+
+def test_unassigned_action_removed() -> None:
+    assert "unassigned" not in get_args(STORAGE_ACTIONS), (
+        "unassigned action references unassignedDevices which is not in live API"
+    )
 
 
 # --- Unit tests for helpers ---
@@ -235,12 +243,6 @@ class TestStorageActions:
         with pytest.raises(ToolError, match="not found"):
             await tool_fn(action="disk_details", disk_id="d:missing")
 
-    async def test_unassigned(self, _mock_graphql: AsyncMock) -> None:
-        _mock_graphql.return_value = {"unassignedDevices": []}
-        tool_fn = _make_tool()
-        result = await tool_fn(action="unassigned")
-        assert result["devices"] == []
-
     async def test_log_files(self, _mock_graphql: AsyncMock) -> None:
         _mock_graphql.return_value = {"logFiles": [{"name": "syslog", "path": "/var/log/syslog"}]}
         tool_fn = _make_tool()
@@ -289,7 +291,9 @@ class TestStorageFlashBackup:
     async def test_flash_backup_requires_confirm(self, _mock_graphql: AsyncMock) -> None:
         tool_fn = _make_tool()
         with pytest.raises(ToolError, match="destructive"):
-            await tool_fn(action="flash_backup", remote_name="r", source_path="/boot", destination_path="r:b")
+            await tool_fn(
+                action="flash_backup", remote_name="r", source_path="/boot", destination_path="r:b"
+            )
 
     async def test_flash_backup_requires_remote_name(self, _mock_graphql: AsyncMock) -> None:
         tool_fn = _make_tool()
@@ -309,12 +313,25 @@ class TestStorageFlashBackup:
     async def test_flash_backup_success(self, _mock_graphql: AsyncMock) -> None:
         _mock_graphql.return_value = {"initiateFlashBackup": {"status": "started", "jobId": "j:1"}}
         tool_fn = _make_tool()
-        result = await tool_fn(action="flash_backup", confirm=True, remote_name="r", source_path="/boot", destination_path="r:b")
+        result = await tool_fn(
+            action="flash_backup",
+            confirm=True,
+            remote_name="r",
+            source_path="/boot",
+            destination_path="r:b",
+        )
         assert result["success"] is True
         assert result["data"]["status"] == "started"
 
     async def test_flash_backup_passes_options(self, _mock_graphql: AsyncMock) -> None:
         _mock_graphql.return_value = {"initiateFlashBackup": {"status": "started", "jobId": "j:2"}}
         tool_fn = _make_tool()
-        await tool_fn(action="flash_backup", confirm=True, remote_name="r", source_path="/boot", destination_path="r:b", backup_options={"dryRun": True})
+        await tool_fn(
+            action="flash_backup",
+            confirm=True,
+            remote_name="r",
+            source_path="/boot",
+            destination_path="r:b",
+            backup_options={"dryRun": True},
+        )
         assert _mock_graphql.call_args[0][1]["input"]["options"] == {"dryRun": True}
diff --git a/unraid_mcp/tools/storage.py b/unraid_mcp/tools/storage.py
index 610396a..1d910b9 100644
--- a/unraid_mcp/tools/storage.py
+++ b/unraid_mcp/tools/storage.py
@@ -1,7 +1,7 @@
 """Storage and disk management.
 
 Provides the `unraid_storage` tool with 6 actions for shares, physical disks,
-unassigned devices, log files, and log content retrieval.
+log files, and log content retrieval.
 """
 
 import os
@@ -39,11 +39,6 @@ QUERIES: dict[str, str] = {
           }
         }
     """,
-    "unassigned": """
-        query GetUnassignedDevices {
-          unassignedDevices { id device name size type }
-        }
-    """,
     "log_files": """
         query ListLogFiles {
           logFiles { name path size modifiedAt }
@@ -73,7 +68,6 @@ STORAGE_ACTIONS = Literal[
     "shares",
     "disks",
     "disk_details",
-    "unassigned",
     "log_files",
     "logs",
     "flash_backup",
@@ -109,7 +103,6 @@ def register_storage_tool(mcp: FastMCP) -> None:
           shares - List all user shares with capacity info
           disks - List all physical disks
           disk_details - Detailed SMART info for a disk (requires disk_id)
-          unassigned - List unassigned devices
           log_files - List available log files
           logs - Retrieve log content (requires log_path, optional tail_lines)
           flash_backup - Initiate flash backup via rclone (requires remote_name, source_path, destination_path, confirm=True)
@@ -203,9 +196,6 @@ def register_storage_tool(mcp: FastMCP) -> None:
                 }
                 return {"summary": summary, "details": raw}
 
-            if action == "unassigned":
-                return {"devices": data.get("unassignedDevices", [])}
-
             if action == "log_files":
                 return {"log_files": data.get("logFiles", [])}