APFS

Time Machine local snapshots sit on your Mac's internal disk even without a backup drive, quietly padding System Data. Here's how to see and clear them safely.

Purgeable space on Mac is storage macOS frees up automatically when it needs room: caches, Spotlight indexes, and local snapshots you can't delete yourself.

Since macOS Catalina your Mac splits the startup disk into two: a sealed read-only Macintosh HD and a writable Macintosh HD - Data volume. Here's why.

Deleting files but not freeing space on Mac? Causes are an un-emptied Trash, APFS snapshots, purgeable space, or a stale Finder count, plus the fix for each.