Guide to correcting the error: "Error writing file to disk".
When using WordPress, you may occasionally come across an error called "Error writing file to disk". It's a very common error and can be caused by a variety of things, but fortunately, it can be easily corrected. In this guide, we'll show you how to fix the "Write file to disk error" on WordPress.
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What is a file write to disk error?
The write file to disk error is a common error that occurs when you try to upload a file to your WordPress site. It usually occurs when you're trying to upload a large file, or when you don't have enough disk space available. When this error occurs, you'll get an error message indicating that the file could not be saved to disk.
How can I correct the file writing error on disk?
The first thing to do to correct this error is to check
that you have sufficient free disk space on your server. You can do this by connecting to your server via FTP and looking at the size of your root directory. If you don't have enough disk space available, you may need to buy more disk space or delete some unnecessary files to free up space.
If you have enough free disk space, you can try changing the file permissions on your server. File permissions are settings that determine who can access which files on your server. If file permissions are not correctly configured, you may encounter errors when uploading files to your site. To modify file permissions, you'll need to connect to your server via FTP and modify the settings for each file individually.
Check WordPress plugins and themes
If you've checked disk space and file permissions and the error persists, you may need to check your WordPress plugins and themes. Some plugins and themes may cause errors when uploading files to your site. To check your plugins and themes, you'll need to deactivate all plugins and themes installed on your site and see if the error persists. If the error does not occur when all plugins and themes are deactivated, you may need to reinstall your plugins and themes one by one to find the one causing the error.
Solving problems with contact forms that don't work
If you encounter errors when sending contact forms on your site, you may need to check whether your server is configured to send e-mails. Some servers are not configured to send e-mails and this can cause errors when sending contact forms. To check whether your server is configured to send e-mails, you'll need to contact your hosting provider and ask them to check their e-mail settings. You can find out more about how to solve problems with contact forms that don't work at reading this article.
Conclusion
The file-to-disk error is a common error that can occur when you try to upload a file to your WordPress site. To correct this error, you'll need to check that you have enough disk space available on your server, change file permissions and check your WordPress plugins and themes. If you encounter errors when uploading 
contact forms, you may need to check whether your server is configured to send e-mails. By following these steps, you should be able to resolve the file-to-disk error on WordPress.
Guide to fixing the "Error writing file to disk" error on WordPress
- Check that your server's directory permissions are correctly configured.
- Try changing the permissions of the /wp-content/uploads directory using an FTP tool or your hosting panel.
- Make sure that the file upload settings on the server are not too strict.
- Check that you have the latest version of WordPress.
- Temporarily deactivate your theme and activate a default theme (e.g. Twenty Fourteen) to see if this solves the problem.
- If a plugin is causing the problem, check whether a plugin update is available.
- Check whether you have installed a third-party plugin that blocks file downloads.
- Try resetting the plugin configuration to the default version.
- Uninstall any plugins that may be linked to the error and reinstall them one by one.
- Try contacting your hosting provider's technical support if the problem persists.
- Try resetting WordPress by reinstalling the core files.
- Check that your operating system is up to date and compatible with your hosting provider's tools.
