You clear diskspace on Catalina same as you would on other Mac Systems. You need to move or remove some of the software on your disk drive. If you don't have another backup disk connected then maybe you can remove apps you bought from App Store and load them back after you get your system loaded.
Putting a file in the trashcan means it's marked for deletion. But until you actually empty the trash, it'll sit there — just like a trashcan in real life. It's easy to let those files build up until you have hundreds of megabytes — gigabytes, even, just waiting to be deleted (or discovered if anyone has access and decides to snoop). So if you want your precious drive space back, and you want to make sure what you've deleted is really deleted, empty the trash.
How to empty the trash on your Mac
How to securely empty the trash on your Mac
Emptying the trash is usually sufficient to get rid of the files you don't want anymore. But emptying the trash doesn't really destroy the files: They remain on the hard drive, marked for being overwritten the next time your Mac needs the space. As a result, some deleted files can be recovered using disk recovery software.
Sometimes you may delete files that are particularly sensitive: Financial records, for example, intimate photos, or other data you absolutely don't want anyone to get their hands on, under any circumstances.
Apple has considered this and has provided a Secure Empty Trash option as well. Secure Empty Trash overwrites the deleted files with what Apple calls 'meaningless data.'
Secure Empty Trash takes longer, but provides, as the name implies, a more secure form of file deletion. Use at your own discretion.
Bonus Tip: Make Secure Empty Trash the default behavior
Use this tip if you'd like to make sure that your Mac securely deletes files every time you empty the Trash.
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Up and up
![]() Analyst says iPhone 12 will cost more even without charger and headphones
Jeff Pu, an analyst at Chinese research firm GF Securities, predicts that Apple will raise the price of the iPhone 12 by at least $50.
Optimized Storage in macOS Sierra and later* can save space by storing your content in iCloud and making it available on demand. When storage space is needed, files, photos, movies, email attachments, and other files that you seldom use are stored in iCloud automatically. Each file stays right where you last saved it, and downloads when you open it. Files that you’ve used recently remain on your Mac, along with optimized versions of your photos.
* If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.
Find out how much storage is available on your Mac
Choose Apple menu > About This Mac, then click Storage. Each segment of the bar is an estimate of the storage space used by a category of files. Move your pointer over each segment for more detail.
Click the Manage button to open the Storage Management window, pictured below. This button is available only in macOS Sierra or later.
Manage storage on your Mac
The Storage Management window offers recommendations for optimizing your storage. If some recommendations are already turned on, you will see fewer recommendations.
Store in iCloudHow To Clear Space On Mac For Catalina Free
Click the Store in iCloud button, then choose from these options:
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Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.
Optimize Storage
Click the Optimize button, then choose from these options.
How To Clear Space On Mac For Catalina Islands
Optimizing storage for movies, TV shows, and email attachments doesn't require iCloud storage space.
Empty Trash Automatically
Empty Trash Automatically permanently deletes files that have been in the Trash for more than 30 days.
Reduce Clutter
Reduce Clutter helps you to identify large files and files you might no longer need. Click the Review Files button, then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation, or Trash.
You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.
Learn how to redownload apps, music, movies, TV shows, and books.
Where to find the settings for each feature
The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control those settings directly within each app.
Empty Trash Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Trash Automatically selects “Remove items from the Trash after 30 days.”
Other ways that macOS helps automatically save space
With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:
How To Clear Space On Mac For Catalina BayHow to free up storage space manuallyHow To Clear Space On Mac For Catalina Bay
Even without using the Optimized Storage features of Sierra or later, you can take other steps to make more storage space available:
How To Clear Space On Mac For Catalina Beach
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