If the computer system disk space is insufficient, it can be solved by cleaning temporary files, uninstalling idle software, managing download directories and processing large files. First, Windows users can use the disk cleaning tool or enter "%temp%" to delete temporary files. macOS users can go to the resource library to delete cache, or use third-party tools to assist with cleaning; second, uninstall software that has not been used for a long time and check to delete configuration data to completely clear the residue; third, regularly organize the desktop and download folders, use the tools to identify duplicate files and archive important information and delete local copies; finally, filter large files by size through the system's own functions, and move infrequently used large files such as videos and virtual machine images to the external hard disk to release space. Adhering to regular maintenance can effectively prevent space from being exhausted again.

The system disk is full, the operation is slow, and the software cannot even be installed - this is probably a problem that every computer user will encounter. I want to clean up but am afraid of accidentally deleting the system files. In fact, as long as I master a few key points, it is not difficult to release dozens of GB of space.

Clean up temporary files and system caches

Windows and macOS will generate a large number of temporary files during use, such as browser cache, software installation residues, etc. These files are usually safe to delete.

• Windows users can use the disk cleaning tool (enter "%temp%" to open a temporary folder)
• macOS can manually delete caches by "Go to > Resource Library > Caches"
• You can also use third-party tools such as CCleaner or OnyX to assist scanning

Note: Do not manually delete unrecognized system cache directories, as problems are prone to occur.

Uninstall software that you haven't used for a long time

Many people forget to uninstall the software after installing it, especially those tried tools, game platform clients, etc. These programs not only take up space, but some also run in the background to consume memory.

• Check the Installed Programs list in Control Panel/Settings
• Remember to check "Delete the user's configuration data at the same time" when deleting large-volume applications.
• Pay attention to the "Uninstall Residual Cleanup" option that comes with some software

For example, the Steam client itself is not big, but the game library is often hundreds of GB. If you haven't played it for a long time, you can consider uninstalling it temporarily.

Manage download folders and duplicate files

Desktops and download folders are often "digital junkyards" - old documents, screenshots, and duplicate installation packages are piled together.

• Regularly filter files over 100MB to confirm whether they need to be retained
• Use tools to find duplicate files (such as Duplicate Cleaner, Gemini)
• Archive important information to external hard drive or network disk and delete local copy

It is recommended to develop a habit: decide whether to use the file temporarily or archive it immediately after downloading it.

Direct search and manual processing of large files

The operating system now supports sorting files by size:

• Enter "size:500MB or above" in the Windows search bar to quickly locate large files
• macOS can switch to list view in finder and click "Size" to sort
• Extremely large video files or virtual machine images should be checked

If you don't often do video editing or development testing, this type of file can be moved to the mobile hard drive.

Basically these common methods. Many people can free up fifty or sixty GB of space for the first time when the computer is completely cleaned. The key is to maintain it regularly and don’t let the garbage accumulate into a mountain before taking action.

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