§Guides
Help for a full drive.
Each guide starts with what Windows can already do for free, then shows where Tidemark helps. No scare tactics, just the steps.
- 01Why is my C: drive full? How to find out, step by stepFull drive6 min readupdated 13 October 2026Your C: drive filled up and you did not install anything big. Here is how to find what grew, starting with the tools already in Windows.read the guide
- 02What is “System & reserved” in Windows, and can you shrink it?Windows7 min readupdated 13 October 2026Windows can keep 20 GB or more for itself. Here is what is inside “System & reserved”, what is safe to shrink, and the Microsoft tools that do it.read the guide
- 03AI models are filling your disk: Ollama, LM Studio, Hugging Face and ComfyUIAI tools6 min readupdated 13 October 2026Local AI tools each keep their own copy of model files. Here is where they live, how to find duplicates and how to free the space without breaking anything.read the guide
- 04Reclaim space from node_modules, target and other developer foldersDevelopers5 min readupdated 13 October 2026Old projects keep gigabytes of build output and dependencies. Here is what is safe to delete and how to find it across every project at once.read the guide
→Get Tidemark
See where your space went.
Free to use, with no time limit. Tidemark Pro is $9.99 once (usually $19.99), for up to 3 devices, Windows or Mac.
Windows 10 (version 2004, build 19041) or later and Windows 11, on x64 PCs.
Mac, coming soon: macOS 15 Sequoia or later.