Ollama offline setup guide: run local AI without the internet
A clean DIY path to run Ollama offline: install, download models, and verify everything works in airplane mode.
Runs locally: no account, no cloud calls once launched.
Portable workflow: keep your presets on the USB so every machine feels the same.
Practical troubleshooting: ports, free space, and approvals (SmartScreen/Gatekeeper).
What this guide covers
This guide is for people searching “ollama offline setup guide” who want a clear, offline-first setup that works on real machines.
We’ll focus on repeatable steps: launch, confirm it’s local, and keep it stable across updates and travel.
- Use a direct USB 3.x port (or a quality USB‑C adapter).
- Bookmark the localhost page after first launch.
- Keep free space on the drive so caching and updates don’t choke performance.
Setup that doesn’t depend on Wi‑Fi behaving
The goal is simple: the AI should respond in airplane mode. Launch from the USB, wait for the local UI to open, and test once with Wi‑Fi off.
If you’re on a locked-down environment, the first run may require approving SmartScreen (Windows) or Gatekeeper (macOS). After that, day-to-day use should be standard-user friendly.
- Windows: More info → Run anyway (SmartScreen), then allow the local app to run.
- macOS: Control‑click the launcher → Open, then approve in Privacy & Security if prompted.
- Avoid VPN/proxy tools that intercept localhost.
Performance and storage tuning
Most ‘offline AI is slow’ complaints are really USB throughput, low free space, or a laptop fighting for CPU/RAM.
Start with the balanced preset, then move lighter for older machines and heavier only when plugged in.
- Leave 10–15 GB free on the USB for cache and updates.
- Prefer a short extension cable to reduce port stress and accidental disconnects.
- Close heavy browser tabs and screen recorders while generating.
Quick cross-links
Hop to related guidance while you keep this page open.
FAQ
Does this require internet?
No. After launch, it runs locally on your machine and works in airplane mode.
Is anything sent to the cloud?
No by default. Your prompts and outputs stay on your device unless you choose to copy/share them.
What if my machine is weak?
Use a lighter preset, keep free space on the USB, and run while plugged in for best stability.
Related guides
Offline AI on macOS without cloud logins
Set up offline AI on macOS. PortableMind runs locally from a USB so you avoid cloud logins and Gatekeeper surprises.
Air-gapped AI USB best practices
How to use an offline AI USB in sensitive environments: updates, model sourcing, and safe handling without the cloud.
Battery-optimized offline AI on laptops
Run offline AI without draining your battery. PortableMind includes presets and tips to keep power use low while staying offline.