• Secure Erase Free Space Mac
• Erase Free Space Mac Big Sur
• How To Wipe Free Space
• Erase Free Space Mac Catalina

You’ll also want to read “OS X: About Disk Utility‘s erase free space feature. ” A note at the end starts to get to the heart of the matter. With an SSD drive, Secure Erase and Erasing. Jul 02, 2020 Erasing your disk: For most reasons to erase, including when reformatting a disk or selling, giving away, or trading in your Mac, you should erase your entire disk. Erasing a volume on your disk: In other cases, such as when your disk contains multiple volumes (or partitions) and you don't want to erase them all, you can erase specific volumes on the disk. Jun 26, 2020 But if the latest version of Mac OS uses seven passes to empty the trash, while Permanent Eraser uses 35, logic would dictate that it SHOULD take at least five times as long to erase.

Permanently Erase or Wipe Data on Mac, DoYourData Super Erase for Mac is powerful Mac data erase software that can permanently and completely erase files, folders and data on Mac hard drive or storage device. It will destroy/wipe the selected data and overwrite the disk space with zeroes/ones or random bits. Jun 01, 2020 macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu, which is also available in macOS Recovery.

The Mac OS X Disk Utility app provides an ability to erase free space on traditional hard drives, which overwrites vacant disk space on the drive to prevent any potential recovery of deleted files (that is, files that have been removed traditionally, rather than through secure methods). For most users this is an unnecessary procedure, but if. I was trying to wipe the free space of an external USB 3.0 disk in OS X (Yosemite) disk utility. However, I receive the following error: EDIT: The disk is formatted as GUID / Mac OS Extended (Journaled) and 1.1 of 2.0 TB are occupied. How to securely erase free space on a hard drive (Mac) January 9, 2017 From time to time, I need to clean off the contents of a hard drive on one of my Macs—most often this is the case prior to selling the mac or giving it to someone else.

The Disk Utility on Mac is a very useful system tool for fixing specific disk problems. For example, you can run a disk check when your apps quit simultaneously, an external drive is not working properly, or your Mac won’t startup. Disk Utility will check the health of your hard drive and repair any disk errors if possible.

Disk Utility usually works smoothly, but there are times when frustrating errors occur and prevent the process from being completed. One of the common errors encountered when using Disk Utility is the “Couldn’t Unmount Disk” error. When this error pops up, any attempted task gets stopped right in its tracks.

What is the “Couldn’t Unmount Disk” Error on Mac?

The “Couldn’t Unmount Disk” error can happen during formatting, partitioning, disk verification and repair, or any task that the Disk Utility undertakes. What makes this error frustrating is that there is usually very little to no additional information provided by the error message, making it more challenging to resolve the problem, And based on the error message, it is even harder to determine what the problem is all about.

Here are some variations of the error message that Mac users encounter, depending on the process being executed when the error happened:

• Disk Erase failed.
  Disk Erase failed with the error:
  Couldn’t Unmount Disk.
• Partition failed
  Partition failed with the error:
  Couldn’t Unmount Disk.
• Disk Utility stopped verifying (letter of the hard disk)
  Couldn’t Unmount Disk.
• Volume Erase failed
  Volume Erase failed with the error:
  “Couldn’t Unmount Disk”.

Once this pops up, the current process gets halted and could no longer proceed, affecting any troubleshooting process or disk repair you might be doing.

What Causes the “Couldn’t Unmount Disk” Error in Disk Utility for Mac?

When your Mac is getting the “Couldn’t Unmount Disk” error when using the Disk Utility, it is possible that the boot drive cannot be modified because it is being used by some process or an application. For example, a file from the disk you are trying to erase could be open, which means that you can’t proceed with the erasing unless all the files are closed.

Another possible reason is the presence of malware. When a malicious software is running in the background and wreaking havoc on your Mac, you might get the “Couldn’t Unmount Disk” error when you try to do something with your hard drive. This is because the malware might be making changes to your hard drive without you knowing it.

Other factors you should look into include corrupted system files, bad hard drive sectors, or insufficient permissions. Whatever the reason is, resolving this “Couldn’t Unmount Disk” error should be your priority because it might lead to further disk damage or other hard drive issues.

How to Fix the “Couldn’t Unmount Disk” Error on Mac

If your Mac is getting the “Couldn’t Unmount Disk” error, don’t worry because there are several ways to handle this problem. But before you do so, here are some of the basic troubleshooting you should take care of first:

• Close all applications and files before attempting the repair.
• Make sure you have enough permissions to read and write to the drive you want to modify.
• Run a scan to check for the presence of malware. Delete any malicious software detected using your antivirus and delete all related files.
• Disable your security software after running the scan because it might prevent the processes from pushing through.
• Declutter your system by cleaning up your computer with a Mac cleaning tool. This should fix any errors related to corrupted junk files or cached data on your Mac.
• Restart your computer.

Once you’ve completed the steps above, you can now proceed with the main solutions:

Solution #1: Use a USB Boot Drive to Repair the Hard Drive.

If “Couldn’t Unmount Disk” error occurs when you are trying to modify the boot drive, the easiest solution is to boot your Mac using another drive, and then run Disk Utility from that disk. You can use an installation drive or a recovery drive, as long as it is bootable and it is separate from the primary boot disk where your macOS is installed.

Here are the steps you need to follow to resolve this error using a USB boot drive:

1. Connect the USB boot drive to your Mac, then reboot.
2. While restarting, hold down the Option key button and choose the attached boot drive.
3. In the boot menu, choose Disk Utility.
4. Click First Aid at the top menu to verify the disk.
5. Once your disk has been verified, you can then proceed with the task you were trying to perform when the error occurred.

Solution #2: Use the Recovery Partition.

If the “Couldn’t Unmount Disk” error message appears when doing First Aid on your disk or formatting a non-boot disk, the first solution will not work. If this is the case, you can try resolving the error using Recovery Partition.

Here’s how to do it: Canon pixma mp620 driver for el capitan.

Disk Erase App For Macos Mac

1. Reboot your Mac.
2. While booting up, hold down the Option key to boot using the Recovery Partition.
3. Next, click on Disk Utility from the boot menu.
4. Click First Aid to verify the disk or select Erase to format the disk if needed.

Keep in mind that this method will only work if the disk that is throwing the error is not the same as the primary boot partition where the Recovery Partition is saved.

Solution #3: Use Command Prompt to Force Unmount the Disk.

If the above methods don’t work and your disk is pretty stubborn, you can attempt to fix this error by forcing to unmount the disk using commands.

To do this, follow the steps below:

Disk Erase App For Macos Windows 10

1. Launch Terminal by navigating to Finder > Go > Applications > Utilities.
2. In the Terminal window, type in the following command: diskutil list
3. This will list down all the available disks on your Mac.
4. Look for the disk that you want to force unmount and take note of the number of the drive.
5. Type in this command next: sudo diskutil unmountDisk force /dev/diskx
6. Replace /dev/diskx with the disk number of the drive you want to unmount (for example, dev/disk1).
7. Wait for the process to be completed.

Solution #4: Use a Third-Party App.

If you don’t want to go through the trouble of booting using the USB boot drive or typing in commands in the Terminal, you can use a third-party tool instead. There are a lot of repair utilities to help you deal with this “Couldn’t Unmount Disk” error. These utilities can also be used to format, partition, erase, or modify your disk. Just make sure to choose a reliable app that can help you perform these tasks without any error.

Macos Disk Creator

Summary

Disk Erase App For Macos Laptop

The Disk Utility on macOS is a useful tool for fixing any disk-related issues or performing tasks that involve the hard drive. But this tool is not impregnable. Flaws, such as the “Couldn’t Unmount Disk” error, can happen from time to time. When this happens, simply follow the solutions listed above and you’ll be good to go.

Disk Erase App For Macos Mac

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.

Secure Erase Free Space Mac

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

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.

Erase Free Space Mac Big Sur

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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