Sep 28, 2020 • Filed to: Solve Mac Problems • Proven solutions
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By now, you probably know of the many ways to delete files on your Mac, but do you know how to securely delete those files? Probably not. Do you even know what it is meant by the 'secure deletion of files?' Probably not.
How to Securely Erase Data from Your Mac and External Drives. Posted on March 15th, 2017 by Jay Vrijenhoek. Everyone needs to securely erase data at some point—even on a Mac. After all, securely erasing your data ensures your personal and private information does not end up being found and abused by someone else. How to Securely Delete a User Account on a Mac Shared Macs will invariably have multiple user accounts, and sometimes there are cases where you’ll want to delete a user account but keep the others. The reasons can be varied, but the good news is that it's super-easy to do if you are an administrator user, which is the only user with such.
- If you absolutely must remove those files (say, if you want to reset an app to its default settings), you can use a handy app called AppCleaner to fully uninstall an app, along with all its extra files. Just launch AppCleaner, search for an application in its main window, and click on it, then click the “Remove” button in the popup window.
- Mac has an inbuilt feature to securely delete your file. Please follow the steps to do this. Launch Disk Utility ApplicationsUtilities Select the drive that you want to clear deleted data Click the Erase tab and click on Erase Free Space.
Securely deleting files means you delete them and make sure they have been completely removed from your system with no traces or residual files left behind.
You might not be aware of this little but necessary piece of info, but emptying Trash doesn't mean your files are gone. Your Mac just makes them invisible, so to speak.
The one way you can be sure they're not in your Mac is when you securely delete them. You will be instructed on the top 3 ways to do that in this post.
Part 1: Why to Securely Delete Files on Mac
There is often an advantage and disadvantage to everything and securely deleting files is certainly no exception. It might seem counterintuitive to permanently delete files because there is a chance you might want them back, but look at this simple example: What if you are in dire need of space in your drive but you don't know what's taking it up? Secure deletion comes into play here. Below are more reasons why you should employ this feature.
- Reliability - It doesn't just delete files' entries from directories, it also deletes the files multiple times until none of it can be recovered. What this means is, the usual tricks of recovering data won't work here. It matters little even if you're a programmer; once the files are securely deleted, no one can't get them back.
- Security - The utter deletion of the files means you don't have to worry about nosey individuals being able to recover your personal files, regardless of how tech-savvy they are. E.g. If you wanted to sell your drive, you can rest assured that none of the sensitive data you once had in it will be recoverable.
- Versatility - It negates the need for you to purchase third-party software to securely delete files.
- Prevents Hard Driver Errors – It's been proven that sometimes, formatting your drive manually can lead to errors that pile up to damage your drive. It is thus better to follow a simple procedure to securely delete the files you don't need, all of them, if necessary, then to format the drive. This ensures a drive that will perform better and last longer.
Part 2: Top 3 Ways to Securely Delete Files on Mac
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What's better than one way to securely delete files? THREE ways to securely delete files. As you would expect, Mac gives you several options on making sure that embarrassing photo you took during summer vacation will never be seen by prying eyes.
You can easily make use of any of the three options, but you are advised to settle with the one which appeals to you the most. You don't have to worry about how effective each is because they all get the job done.
Solution 1: Secure Delete Files with Mac Terminal
For the sake of brevity, Mac Terminal can simply be defined as a powerful tool that allows you to control your Mac via command prompt. To securely delete files, you only have to type in certain commands in the Terminal window and hit the 'Enter/Return' key.
Initially, the same command was used to get rid of files and folders but Apple removed this feature from their operating systems beginning with macOS Sierra.
But since people and developers alike love tinkering and tweaking with computers, a means to bypass the srm command was found: Using the rm command.
1. Click the 'Apple Menu.'
2. Click 'System Preferences.'
Midi interface mac app installer. 3. Click 'Keyboard.'
4. Click 'Shortcuts' located at the top of the dialogue window.
5. Look to the left and click on the 'Services' you see in the small window.
6. If 'New Terminal at Folder' within the 'Services' category is unchecked, check it.
7. Open 'Finder.'
8. Navigate to the folder where the files to be securely deleted are. Mac high sierra compatibility software.
9. Right-click on the folder but don't open it.
10. Click on 'Services' found at the bottom of the drop-down menu you see.
11. In the second drop-down menu, click on 'New Terminal at Folder.'
12. The Terminal window will open up. Type this command into it and press 'Enter/Return' to securely delete files: rm -P PrivateFile.txt (In the example you see up there, the file to be deleted is named 'PrivateFile.' When using Terminal to delete this file, type in the corresponding command then the name of the file (PrivateFile) in front of it.
Solution 2: Securely Delete Files Using TRIM
Not all Macs come HDDs (Hard Disk Drives). Mrhythmizer free download for mac. Some of them come with the more powerful and faster SDDs (Solid State Drives). It's considerably more difficult to securely delete files on the latter than the former, but it's not impossible.
Macs that come with SSD also come with a tool called TRIM. Anytime you delete a file on any type of drive (SSD or HDD), your macOS designates the space as 'not in use.'
TRIM automatically clears the data in the allocated 'not in use' space, making it possible for new data to be written in the said space. The older HDDs don't have this luxury though. Yes, TRIM can delete the 'not in use' space, but you have to manually enable this feature using the trimforce command in Terminal.
It would be prudent for you to back up your files using Time Machine before you attempt to use TRIM to curtail any risk of accidental data loss. This risk is made all the more glaring since Apple warns of using TRIM 'at your own risk'. And if you're a newb in using command prompt, then this post is all but indispensable to you.
1. Launch 'Terminal.'
2. To enable TRIM, type in this command: sudo trimforce enable
3. You will see a prompt asking for your permission to initiate the process (the image below). Type y in Terminal.
4. Click on 'Enter.'
5. Type y once more.
6. Press 'Enter' again. This tells Terminal it can reboot your Mac after it enables TRIM. That's it. You have now enabled TRIM and it will carry out the duty of wiping empty spaces in your drive.
Solution 3: Securely Delete Files via Disk Image
Mac software primarily comes in disk images (.dmg file extension). Dmg files are great because they give you the leeway to pack up and share your files on the web very conveniently.
The possibilities with disk images are many. You can even create and encrypt them utilizing Disk Utility. Do you know what is meant by encrypted disks, though? Think of them as extremely secure and safe vaults that protect any sensitive data you store in them.
One of a disk image's many functions is to securely delete your files and folders. The process might be somewhat new to you though because have to move the data to be deleted into the disk image. Then you lock and delete it.
The purpose of doing all this is because when the disk image encrypts the files, they become irrecoverable. And make sure the disk image is closed before you delete the files. Deleting them while it's still open will only move them to your Trash. Here's what you have to do to make an encrypted disk image:
1. Open 'Applications.'
2. Click the 'Utilities' folder.
3. Click on 'File.'
4. In the drop-down menu, click on 'New Image.'
5. In the next menu, click on 'Blank Image.'
6. A new dialogue box will open up. In the 'Save As' box, type in any name for the disk image. And be sure to add the '.dmg' file extension at the end of the name.
7. Choose 'Where' and select a directory to save the image file.
8. Type in a 'Name' for the file.
9. Specify a 'Size' for the image file (a number), then leave a space and type KB, MB, GB, or TB.
10. Choose 'Encryption'. You have to do this if you want to encrypt the disk image so having a password is necessary to open it. You are advised to go with '128-bit AES encryption' because it has proven very effective in making the disk image exceptionally secure. And it doesn't trade this security for speed. Linear algebra friedberg 4th edition pdf free download.
11. Selecting the 'Encryption' method will bring up a window prompting you for a password. Type in the password twice.
12. Click on 'Choose.'
13. Click on 'Save.'
14. Once the operation completes successfully, click on 'Done.'
15. The new disk image you just created will appear in the 'Disk Images' category in Disk Utility. Piazza app for mac. Double-click on it.
16. Any files or folders that are to be deleted should be moved to your newly-created image file.
17. Right-click on the image file's icon.
18. Choose 'Eject.' This will close the disk image as well as lock it.
19. All the files you copied to the image file have thus been encrypted. You only need to delete the .dmg file to Trash and all the files within it will be securely deleted and gone for good.
Even if some curious individual does manage to recover the files, none of them will be readable, so you can rest easy knowing your files won't be seen by the wrong eyes or fall into the wrong hands.
Part 3 How to Retrieve Deleted Files on Mac
The whole point of deleting files is so they can never be recovered, so wouldn't you be in a pretty right pickle if you delete something that's so important you use it daily?
That would be a very unsavory situation to be in. Incredibly, there is one software out there that can bypass even the powerful algorithm used to delete files, meaning the software can easily recover them once more. It's called Recoverit Mac Data Recovery. Follow the steps below to retrieve your deleted data
Step 1: Choose a Location
- Once you start Recoverit, select one hard disk from 'Hard Disk Drives'. Select the one where the files were deleted from.
- Click 'Start.'
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Step 2: Scan the Location
- Since Recoverit gives you the option to use filters like 'File Type' and 'File Path' during the scan, it just means the process will be carried out much faster. You're allowed to stop or pause the scan if any need arises for this to be done.
- At the completion of the scan, Recoverit will list out the deleted files via a preview window.
Step 3: Preview & Recover Deleted Files
- Tick all the files to be recovered.
- Click on 'Recover'. In minutes, your securely deleted files will be recovered back to your drive. Don't save the recovered files in the same location they once occupied in your Mac.
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The fact that Recoverit Mac Data Recovery can retrieve any type of deleted file speaks volumes. If the software can have so much left behind.
Closing Words
Security is never a topic that should be taken lightly. In the wrong hands, the information you possess could prove disastrous, and that's no exaggeration. https://programssupernal295.weebly.com/messages-for-whatsapp-mac-os-x.html.
Many businesses rely on sensitive information to stay afloat, so anything that jeopardizes this information is a great risk.
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Stolen systems and malware attacks are potent avenues for unauthorized access to your Mac and sensitive information. Securely delete your files to make sure no one can ever gain access to them.
However, as long as your Mac remains with you, you'll need a way to recover deleted files because accidents are inevitable. Recoverit Mac Data Recovery rectifies the errors you made and gets your files back, so it should be a necessary component of your Mac.
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