Docker.raw No Space Left On Device On Mac

A large Docker.raw file is a symptom, not the whole answer. It can include images, containers, volumes, and build cache inside Docker Desktop's virtual disk.

Docker.raw is Docker Desktop's storage image, not just a disposable cache. Please do not delete Docker.raw or reset Docker Desktop until volumes have been reviewed.

First capture read-only evidence:

df -h
ls -lh "$HOME/Library/Containers/com.docker.docker/Data/vms/0/data/Docker.raw" 2>/dev/null
docker system df -v 2>/dev/null || true
docker volume ls 2>/dev/null || true

Clean rebuildable build cache and unused images first. Review named volumes before pruning because they may contain local databases, fixtures, or project state.

Do Not Delete Docker.raw First

Deleting Docker.raw can effectively reset Docker Desktop storage. That may be fine only if you intentionally accept losing local images, containers, volumes, and databases.

Safer Diagnosis

1. Run docker system df.
2. Identify whether reclaimable space is images, build cache, containers, or volumes.
3. Inspect volumes before pruning them.
4. Clean build cache and unused images first.
5. Let Docker Desktop reclaim or compact storage when possible.

Why Free Disk Space Can Still Be Confusing

Docker Desktop runs Linux containers through a virtualized disk. The Mac can show free space while Docker still reports no space left inside its own storage image, or the reverse.