Option 2: erase hard drive under OS X 10.10 Yosemite. 'Erase Hard Drive' can help you permanently erase a hard drive or device to permanently erase all data on the hard drive or device – all data on the hard drive will be permanently erased. Option 3: erase free disk space in OS X 10.10 Yosemite. Get the name of your disk (probably /dev/disk0s2) and type the diskutil command to erase free space which is: diskutil secureErase freespace 1 /dev/disk0s2 That will erase your free space with random numbers. See the list of options below: Level should be one of the following: 0 - Single-pass zeros. 1 - Single-pass random numbers. Paragon Disk Wiper for Mac allows to create a bootable USB-flash drive or external hard drive that will help you to completely erase a whole hard disk, a separate partition or just clean free space. After booting your Mac with the bootable media you will be able to use Wipe Wizard to irreversibly remove your confidential data. If erasing free space on another volume, where 'YourVolume' is the name of the volume being erased, and 'UIDNumber' is the UID number of the user performing the erase. This is covered in an article on MacGeekery.

A fun and visual way to delete system storage on Mac. System storage can occupy tens of gigabytes of space on your Mac for Time Machine backups and cache files. It should be managed by macOS so you’re never short of space. But if you want to do a system storage cleanup, or just free up more space on your Mac, give CleanMyMac X a go.

Is your mac running out of space running mac os Big sur? How to Free Up Space on macOS Big Sur ? At the Special Event keynote of the Worldwide Developer Conference 2020, the Apple CTO presented the new name of macOS which succeeds the very controversial Catalina edition: it is Big Sur, a title predicted a few hours earlier and referring to the sunny beaches of this Californian coastline located not far from the Apple Park. This year, the most remarkable is probably on the design side, with significant improvements that quickly overshadow the departure of Jony Ive .

1. Remove App Junk

App junk are those programs that tend to remain hidden on your macOS even after dropping them on Trash. However, it is worth understanding that deleting unwanted app manually increases your chances of completely removing some critical programs. Therefore, carefully check the filename before deleting it to ensure that it’s for the intended app.

If you want to ensure that you delete all the program junk from your macOS Big Sur, follow the following steps:

Step 1. Take note of the apps you’ve sent to Trash and jot them down. Afterward, find the app junk and the files they are related to.

Step 2. Visit the app location to find the associated programs. Open Finder, Select “Go” and choose “Go to Folder”.
Type “/Library/Application Support” and click “Go”.Go to the folder in macOS Big Sur

If you want to locate a particular program for a specific app, follow the following commands:

• Library apps – /Library/Application Support/
• File Support Cache – /Library/Caches/
• Launch Agents – /Library/Launch Agents/
• Preference Files – /Library/Preferences/
• Application Support Files – /Library/ Application/
• Binary and Dock Items – /Application/
• Start-Up Items – /Library/Startup Items/
• Saved App States – ~/Library/Saved Application State/

2. Clean Your Download Folder

Mac Os X Deleting Files Doesn't Free Space

Are you still puzzled on how to get rid of all those PDF files you obtained from the internet or the images you opened after reception from friends or relative? All these files end up in the Downloads folder on your macOS. Without wiping them off, they end up taking up a considerable chunk of your hard drive space. To get rid of file junk from your downloads,

follow the following steps: Clean Download Folder

1. Visit the Downloads folder near the Trash Can icon to reveal downloaded items.
2. Click the “Open In Finder” button to find the “Downloads” folder, which contains all your downloads.
3. Once here, you can either press Command + A to select all files or choose each file one at a time.
4. Once you’re done highlighting the intended files for deletion, drag and drop them in the Trash Can.

3. Use Storage Optimization Tool on macOS Big Sur

The new macOS Big Sur has a new storage optimization tool that ensures the device has an optimized storage usage at all times by avoiding space wastage. Also referred to as the “Storage Tool”, this feature offers additional space in your hard drive for you to store other programs and files.

To activate the storage optimization tool in your macOS Big Sur, follow the following procedure: Visit the “Apple Menu” located on the top-left of your screen.
Click on About This Mac > Storage > ManageUse New Storage Optimization Tool on macOS Big Sur

You’ll see a pop-up message with several options. Click on the “Optimize Storage” button. Once activated, the optimizer will automatically arrange your files, removing any program junk to free up space. The reason why the storage optimization feature excels in the macOS Big Sur is that the device has an enhanced space for additional storage.

4. Clean Cache on your Mac

In simple terms, a cache is a type of temporary files that enable the macOS Big Sur to operate efficiently. There are various types of cache files. They include Browser cache, System cache; and User cache. Although these caches are helpful, they are temporary and can usurp a large space on your macOS disk.

Clearing Browser Cache on Your macOS
If you are a heavy internet user, you may end up clearing megabytes of cache files on your macOS Big Sur. The official MacBook browser is Safari, and you can remove the cache by following the following steps:Show Develop Menu in Safari

• Click the Safari icon to open the browser.
• Go to the menu and click on “Preferences”.
• Go to the “Advanced” feature and tick the “Show Develop” in the menu bar.
• Click the “Develop” button in the menu bar and choose the “Empty Caches.”
• Close the Safari browser for cache clearance to be complete.

Clear System Cache and User Cache

The system and user caches are the temporary files that let you use your macOS on daily operations. For example, when you listen to music or view a video on your MacBook, the information is stored in the system cache file. The device can, therefore, locate the file quicker and easier on a subsequent command. With time, these caches can occupy a large space on your macOS Big Sur. If you’d like to clear all cache from your macOS or delete a cache belonging to a particular application, here’s the procedure

Terminate the operations of all applications.Launch “Finder”.
Select “Go” on the Finder menu and choose “Go to Folder”.
Type ~/Library/Caches/ and click “Go”.
Find the cache file related to a specific app and choose the items you need deleted and drag them to the Trash Can.

5. Use Cloud Drives

Is your MacBook filled up because of storing a lot of programs and apps? Additionally, you may lose your personal data by frequent misplacement of your USB flash drive. That’s why software developers have created cloud-based storage apps to help you to free up space on your macOS. There are several cloud drives you may consider, but each operates differently with different operating systems. Below are some of the best cloud drives for you macOS Big Sur.

Google Drive. Albeit Google Drive was initially intended for storage purposes, it expanded its featured tools by incorporating an office suite that comprises Google Docs too. Fr merely having a Google Drive, users get 15GB free storage space. However, for additional space, you’ll have to incur monthly subscription fees.

iCloud Drive. This Apple cloud-based storage software works best with Apple’s latest gear on the macOS Big Sur. When you use it on any macOS device or an iDevice, you get an extra 5GB of free space. It comes with an integrated office suite, although it only contains basic features like Pages, Keynote, and Numbers. iCloud supports Windows but is still not supportive of Android.

Dropbox. Dropbox free storage is 2GB. The advantage of this cloud storage app is that it’s compatible with different platforms, including Windows, Mac, Linux, iOS, Kindle, Android, and Fire mobile application programs. Dropbox also provides different promotional offerings such as an extra 250MB for just getting started with the tutorial or 3GB extra space for uploading images through the mobile app.

6. Find and Remove Duplicate Files

The daily utility of your macOS may mean having duplicate files. The most common reason why you may have duplicate files is because of program installations. When an essential program feels under threat from other applications, it may duplicate itself to minimize the risk of malfunctioning.Find and Remove Duplicate Files

But if you find an unimportant program with it duplicate, you can install the Gemini 2 App for macOS. Gemini helps you identify, locate, and get rid of duplicate content in whichever corner they lay concealed. Regardless of the capacity of your hard Drive, Gemini can scan it at a lightning-fast speed. Furthermore, the software also locates and removes similar files to ensure you have free space on your MacBook.

7. Use Third-Party Apps

Instead of using the manual method of clearing space, you can use automated software that performs all that work in a fraction of the time. The Clean My Mac app automatically rids your macOS system of junk file and other remnant programs that eat up space in the device. By using the Clean My Mac software, you can clear up space to revamp the speed and operations of your MacBook.

Sep 08, 2021 • Filed to: Solve Mac Problems • Proven solutions

Every time you delete any file or document on the Mac hard drive it creates free space. This free space can be utilized for storing other data. However, if this free space doesn’t get overwritten, then it can be used to retrieve the previous data that it held using a data recovery tool. Now, if you are selling the hard drive of your Mac and don’t want the person buying it to recover the documents that you deleted then you must erase free space on Mac hard drive. However, make sure that the erasure is done securely without damaging the hard disk.

Part 1: How to Erase Free Space on Hard Drives in Mac OS X

You will have to use the Disk Utility app provided by your Mac OS X toerase free space on Mac hard drive. It offers you the chance to overwrite on the free space left on your hard disk so that no one can retrieve the data that was previously stored on it. However, do keep in mind that this method for free space erasure is only applicable for traditional hard drive and won’t work on SSD versions that utilize flash memory.

1. The initial step is to start the Disk Utility app. This app is located in the utility menu which can itself be found in the Applications menu. You can use the Launchpad for launching this app as well.
2. If the hard drive whose free spaces you want to erase is an external hard disk then you would have to connect it to the Mac and then select it from the menu located on the left-hand side of the screen.
3. Click the Erase free space button after opening the Erase tab.
4. Pick the level of erasure you want and then click the Erase free space to start the overwriting process on the hard drive’s vacant spaces.

1. There are three different erasure options available to you which are Fastest, Secure, and Most Secure. Fastest option overwrites the free space just once while Secure and Most Secure options do that three and seven times respectively.
2. Select any of the erasure options that you like and then click the Erase free space button.

Part 2: How to Secure Erase Free Space on Hard Drives in Windows

Although the Disk Utility app of Mac OS X can erase free space on Mac hard drive, there is a chance that it might not be able to do so in a secure manner. To make sure that the erasing of the free space is completed without any damage to the hard drive then using a data erasure tool is the best option. There are various such tools available on the internet but the best one among them isStellar BitRaser for File. It can secure erase free space on hard drives and ensure that the deleted data can’t be recovered.

• Completely erases the data, ensuring that it can’t be recovered using any data recovery tool.
• Supports multiple data erase algorithms that can be used for erasing data.
• Provides a search feature for quickly search the file or document which needs to be erased from the hard drive.
• Offers the chance to erase the chat history of messaging services like Yahoo and Skype.
• Capable of erasing all traces of internet activity including the internet history maintained by popularly used browsers.

Step 1: Download Stellar BitRaser for File on your Windows PC, take out the hard drive on Mac, and connect it to Windows computer.

Step 2: Click the 'Erase Unused Space' option on the left, to select your Mac hard drive.

Mac Os X Erase Free Space Disk

Step 3: Selected your Mac hard drive and click the 'Erase Now' button to process.

Step 4: After a while, the Mac hard drive erase complete and you can reboot the system.

While other data erasure tools take several passes to erase the free space on a hard drive, Stellar BitRaser only requires a single pass to erase it permanently. However, if you feel the need to take another pass then you can take two more passes. This will ensure beyond doubt that the free space on your Mac hard drive is erased forever.

For you to use Stellar BitRaser for File to erase free space on Mac hard drive, you need to take it out from your Mac first. The reason for this is that this data erasure tool isn’t compatible with Mac OS X and works only on Windows. So, you need to connect the Mac hard disk to a Windows PC before you erase the free spaces on it using Stellar BitRaser for File.

In short, deleting data on the Mac hard drive doesn’t securely erase it. It just creates free space that can be used for recovering the deleted data using a data recovery tool. So, you need to erase free space on Mac hard drive. The Disk Utility app of Mac OS X can be used for the erasure of these free spaces. However, for secure erasure, you need to make use of a reliable data erasure tool like Stellar BitRaser for File. It can erase the vacant spaces on your Mac hard drive and make sure that the data that they contained previously can’t be retrieved using anyprofessional Mac data recovery tool.

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