Storage Analyzer (macOS)
Storage Analyzer is a macOS Catalyst-only tool that scans a disk volume and builds an index so you can explore disk usage with interactive visualizations and reports.
Overview
Storage Analyzer is designed for deeper storage investigation than the iOS/iPadOS Storage tool:
- Scan a selected volume and build a searchable index.
- Navigate folders using a treemap-style visualization and a breadcrumb trail.
- Review reports for folder sizes, large files, duplicate candidates, and cleanup suggestions.
Table Of Contents
Availability
- Storage Analyzer is available only in the macOS Catalyst build of Lirum Device Info.
- On first use, macOS may prompt for permissions (and some folders may be inaccessible without additional access).
Drives Sidebar
The left sidebar lists mounted volumes and includes:
- Volume name and type.
- Used/total capacity and a usage bar.
- Scan status (idle, scanning, ready, failed).
- Actions to refresh the volumes list and start/rescan a volume.
You can also open Finder at the Volumes location from the sidebar.
Scanning And Index
Storage Analyzer builds an on-disk index for the selected volume:
- The bottom toolbar shows when the index was built.
- If an index is older than 24 hours, the tool marks it as outdated and highlights Update Now.
- You can rescan to rebuild the index for fresher results.
The Treemap view also shows index information (size, document count, location), and includes a Delete Index action if you want to remove the stored index and start over.
Navigation
Storage Analyzer provides multiple ways to move around a volume:
- Breadcrumbs at the top show your current path and let you jump back to a parent folder.
- In Treemap, select a segment to drill into that folder.
- A side panel lists the largest items in the current folder; selecting a folder navigates into it.
Tabs
Storage Analyzer has five tabs:
- Treemap: interactive disk usage visualization with hover/callout details.
- Folders: folder sizes list for the current path, with navigation controls.
- Large Files: a report of large files (threshold-based).
- Duplicates: duplicate candidates grouped by file size, with verification tools.
- Cleanup: cleanup-focused reports and actions (where available).
Notes And Limitations
- Results depend on what the app is allowed to scan. Without broader permission (for example, Full Disk Access), some directories may be marked inaccessible and excluded from analysis.
- Scanning large volumes can take time. While scanning or loading, the tool shows a progress overlay and blocks interaction until ready.