Disk Usage

The Disk Usage page shows you a visual map of your disk — which folders use the most space, and what's inside them. It's built on top of the Indexing engine, so the drive needs to be indexed first.

Before you start

Make sure the drive you want to explore has been indexed. See Indexing. If the map is empty, that's why — the drive hasn't been scanned yet.

The page layout

At the top is a summary strip:

• Indexed size — how much data Lumy has cataloged
• Physical drive — the drive model, type (SSD/HDD), and details like temperature and total bytes written (when available)
• Indexed files — how many files are in the index
• Usage ring — used vs. free space, with a colored ring

Below that are two main areas:

The Disk Map (treemap)

A colorful map where bigger rectangles = bigger folders. You can:

• Click a rectangle to drill into that folder's contents
• Click Back to folders to go up a level
• Use the slider to control how many boxes are shown (20–96)

The Largest Folders list

The top 100 folders in the drive, sorted by size. Double-click a folder to open it in Windows Explorer.

Step by step

1. Pick a drive Select the drive from the dropdown at the top.

2. Explore the map Look for the biggest rectangles — those are your largest folders. Click one to see what's inside.

3. Clean up or dig deeper Right-click a folder for options: Open folder (in Explorer), Ask AI, or Open file location.

Ask AI from Disk Usage

Right-click any folder and choose Ask AI. Lumy jumps to the File Organizer with that folder open and a pre-filled prompt asking the agent to analyze it.

Re-scanning

If the map looks stale, click Reindex Drive to queue a fresh scan of the selected drive.

Empty map?

If the Disk Map is empty, the selected drive isn't indexed yet. Go to Indexing, select the drive, and click Start Indexing.