How do I free up storage on a full device?
Where the space actually goes, what is safe to delete, and what to do rather than deleting things you want.
- Difficulty
- beginner
- Time
- 30 min
- Read
- 2 min
Short answer
Empty the bin, clear the downloads folder and check for old system backups and update files — those four usually account for most of it. Use the built-in storage analyser to see where the space actually is before deleting anything.
A full device slows down and cannot install updates, including security ones, so this matters beyond convenience. It is worth finding where the space has gone rather than guessing, because the answer is rarely what people expect.
Step by step
- Look at the storage breakdown first.Both major desktop systems and both phone platforms have a built-in analyser showing what is using space. Ten seconds of looking saves an hour of guessing.
- Empty the bin or trash.Deleted files sit there consuming space until it is emptied. Frequently gigabytes.
- Clear the downloads folder.Usually the single biggest pile of forgotten files: installers, PDFs, duplicate photos. Sort by size and work down.
- Remove old system and update files.Both systems keep a previous version after a major update — often 10-20GB. There is a built-in cleanup tool for this rather than deleting the folders by hand.
- Find the largest files, not the most files.Sort by size. One forgotten video takes more space than a thousand documents. Video and disk images are the usual culprits.
- Check what apps are hoarding cache.Streaming, mapping and messaging apps cache aggressively. Clearing an app's cache is safe and often frees several gigabytes.
- Move photos and video off the device.External drive or cloud storage. Media is what fills most devices, and it is the thing worth keeping — so move it rather than deleting it.
- Uninstall what you do not use.Review installed applications. Large games and creative software are worth removing if unused; they reinstall when needed.
Tips
- Aim to keep around 10% free. Systems slow noticeably when almost full, and cannot install updates.
- Do not delete files from system folders you do not recognise. Use the built-in cleanup tools, which know what is safe.
- Before deleting anything irreplaceable, back it up. "I'll never need this" is how photographs get lost.
Common mistakes
- Deleting files from system folders manually — You can break the operating system. The built-in cleanup tools remove the same space safely.
- Deleting photos to make room — They are usually the least replaceable thing on the device. Move them to external or cloud storage instead.
Questions people ask
How much free space should I leave?
Around 10% of the drive. Below that, systems slow down noticeably and may not be able to install updates.
Is it safe to delete the Windows.old folder?
Yes, using Disk Cleanup rather than deleting it manually. It is the previous version kept for rollback, and it is often 20GB.