Position: How Tos - How to completely wipe a hard drive on Windows 10/8/7?

Summary

But the reality is quite different. Whether it is a hard drive or USB or internal drive, Mac uses different format support. So, you can’t simply use the same drive with both Windows and Mac. As a result, you will need to format the hard drive for Mac. Using the Mac preferred file system is important otherwise the files will be of no use to you. Oct 09, 2019  This wikiHow teaches you how to format a Seagate Hard Drive on a Mac computer. You can format a drive using the Disk Utility in Mac. Before formatting any hard drive, it's a good idea to backup any data or files you want to save before formatting. Formatting the drive will permanently erase all the data and files stored on the hard drive forever. Boot from your old drive by starting your computer and pressing the 'Option' key. When you see the drive listing, select the icon for your original drive. Install Carbon Copy Cloner if you have not done so already, then launch the application. Select the Source Disk (your old hard drive). Select the Target Disk (your new hard drive).

Overview on wiping out a hard drive

It's common to most users to sell or give away computer or hard drive when they want to dispose of old device or upgrade to new ones. You may have already formatted the hard drive or deleted files on it in order to erase sensitive personal data and avoid becoming the victim of identity theft.

However, the fact is that wiping out a hard drive is not as easy as deleting data or formatting hard disk. Simply deleting files by Shift + Delete or emptying the Recycle Bin does not permanently clear data, as deleted files can easily be recovered by recovery software. Formatting a hard drive does not completely erase data either. Though operating system cannot see deleted or formatted data and the drive looks empty, average users are able to get back lost data easily with the help of hard drive recovery software.

If you view tech forums or comminutes online, you can see lots of users looking for an easy way to clean storage devices, and here is one of them:

'What is the best way to clean the hard drive of my laptop? I'm going to selling it to someone but want to ensure all personal files are securely erased. What I want to do is cleaning hard drive completely and reinstalling Windows 7 (its configurations does not suitable for Windows 10). Everything on the hard disk has been backed up to my external hard drive, I'm hoping one of you here can tell me how to clearing PC step by step? I know how to install Windows from CD but have no idea how to safely wipe hard disk. Many thanks!'

Why deleting and formatting is not the same as erasing hard drive

Are you one of those who hold the view that deleting a file is similar to erase it? If yes, you should take a fresh look at this issue. We'll explain reasons in an easier manner.

Hard drive is a kind of storage devices which is used to store digital data. Files are stored on the surface of magnetic and rotating platters in hard disk case. Hard disk changes the magnetic property of platter surface to 1 or 0 when reading or writing data. Thus all data on hard drive will be finally stored in the form of basic binary data, for example, when system saves data like photos, music, etc. on hard drive, rows of zeros and ones are recorded on platters.

When a file is deleted, those ones and zeros of that files stays unaffected, for only a pointer indicating the file is being deleted. Therefore, the recovering deleted files is available before file data gets overwritten or damaged. What about disk formatting? Formatting works in a similar way, as it does not actually wipe data. Formatting disk or partition looks like tearing the contents of a book without disturbing actual chapters of the book. Recovery software is also able to retrieve lost files from formatted disk.

How does hard disk wiping works?

You may wonder how disk wiping works since deletion and formatting does not work on permanently clean hard drive. Apart from physical damage to hard drive, we can completely remove data with disk wiping technology.

As we've mentioned above, to completely erase disk, we should remove those binary data, which means overwriting those zeros and ones with new data. Once binary data of a file is replaced and overwritten by new data, it cannot be recovered any more. Some professional disk eraser software is able to filling up disk with zeros or random information sector by sector, ensuring no data can be recovered from a wiped disk.

What to do before wiping a hard drive

Some preparatory work should be done before wiping computer hard drive in order to make sure the disk wiping can be completed without interruption or causing extra issues.

• Download and install hard drive wipe software. If you plan to clean hard disk on your own, a disk wipe tool is necessary. You should select one easy-to-use and effective tool for the task. If you want to wipe the entire computer, you should make sure the software can work on bootable drive.
• ŸŸEnsure battery is full. If you want to wipe a laptop, you should make sure the battery is well charged or connected to power. If power goes out during disk clearing, it might spell disaster to the drive.
• ŸBackup your data to a different hard disk. When you wipe your computer, everything on it will be lost, thus you should back up any files you want to keep to another hard drive. You can clone hard drive or just copy & paste files to that disk.
• Remember to save software serial numbers. Those applications you bought will be lost after wiping your PC, and you need to reinstall them to new hard drive. Do not forget to record each program's serial number so that you can activate them after reinstallation.
• ŸŸDownload drivers. If you are going to reinstall operating system after hard drive is completely wiped, you may need to download necessary drivers for new system. You can go to official web site of the device and download the latest drivers.
• Prepare a bootable disk. If you are wiping computer's main hard disk, you'll have to carry out the task without booting system, such as under WinPE. In that case, a bootable USB drive or CD is needed.

Once everything gets ready, you can start erasing computer hard drive or external disks. The rest part of this instruction will show you how to erase storage device in different ways.

Method 1: Completely wipe computer by resetting your PC

This method wipes computer by using the reset feature in Windows 8.1 or 10 during reinstalling operating system, which has an option to remove everything on hard drive. This section takes Windows 10 as example to explain how to wipe computer completely. If your computer is running an older version of Windows, you can try steps in Method 2 to erase hard disk.

How To Erase A Hard Drive Completely

Step 1 Click 'Start' menu and select 'Settings' option. On Windows Settings pane click 'Update & Security' option.

Step 2 Click 'Recovery' option on the left navigation options and then click Get 'Started' button under 'Reset this PC' section.

Step 3 Select 'Remove everything' option which removes all of your personal files, apps, and settings and start over.

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Step 4 Select 'Remove files and clean the drive' when you are asked to whether to clean the drives too. The cleaning process may take longer time but it makes sure no one can recover erased files.

Step 5 Click 'Next' and 'Reset' button on following steps to complete the task.

Method 2: Wipe hard drive using free hard drive eraser software

The secure way to erase data for good is overwriting data and refill hard disk using zeros or random data, so that nobody can recover wiped data with disk recovery software. Sounds complex? Actually, nowadays cleaning hard disk is not a complicated work, and you can easily and securely erase disk using disk wipe software.

Free hard drive wipe software

DiskGenius is free software for permanently data wiping. With this hard disk eraser, you can wipe all data on by filling disk sector by sector, making files unrecoverable. Besides, it is a free partition manager program which is able to resize, format, clone or backup partition, check &repair bad sectors, backup data, etc. Here are features of disk wiping function:

• ŸŸŸCompletely erase data on an entire hard drive or partitionŸPermanently delete certain existing files so that they cannot be recovered.
• ŸSafely wipe deleted data without affecting existing files.
• Supports creating bootable USB drive so that you can use the software when computer fails to boot.ŸSupports all popular file systems such as NTFS, FAT32, FAT16, FAT12, exFAT, Ext2, Ext3, Ext4, etc.
• It works with various storage media for example hard drive, external HDD, SSD, USB flash drive, SD card, virtual disk, etc.
• Portable version is available, both 32 bit and 64 bit.

The following content introduces how to erase data in difference situations, and you can choose which to use in line with actual demands, for instance, you want to clear an SD card or other removable devices, Case 1 is the proper solution; if you want to wipe computer, then go to Case 2.

Case 1: Safely erase external hard drive / SD card / USB flash drive

Step 1 Connect the removable device to your computer and make sure it can be recognized by Windows.

Step 2 Install and run DiskGenius from your PC and you can see all local disks and portable devices on the main interface.

Step 3 Select the external hard drive or SD card you want to erase data, and select 'Erase Sectors' option under Tools menu.

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Step 4 Select items to fill disk sectors and click Erase button on the popped-up window.

There are four options to fill disk sectors in the drop-down list, i.e. Random Data, 00, FF and User Specify. You can either choose one from '00, FF and Random Data', or specify item to fill disk.

Step 5 DiskGenius asks confirmation for the action, click Erase button to continue.

Since the process wipes data permanently, you should make sure you are erasing correcting disk and important files have been backed up.

Step 6 The disk eraser starts wiping data on selected drive and the process may take long time if the disk has very large capacity.

Case 2: How to wipe computer's main hard drive

In this example, you can learn how to wipe a computer's main hard drive where Windows is installed. Operating system does not allow to erase system while it is running, and we can only wipe non-system partitions. In this situation, we can erase the hard disk in Pre-OS environment, for example Windows PE.

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DiskGenius is able to reboot to its WinPE version directly from Windows as well as creating bootable USB disk with which you can boot computer and run the WinPE version. If you want to create a bootable WinPE USB stick, you can insert your USB flash drive and click Tools menu and select 'Create WinPE bootable USB drive of DiskGenius'. The following steps show how to reboot computer to WinPE version directly and then erase system disk.

Step 1 Launch the free disk wipe tool DiskGenius from your Windows computer.

Step 2 Click menu 'File' and choose 'Reboot to DiskGenius WinPE version' option.

Step 3 It takes about two minutes to create booting information for Windows PE, please wait it to complete with patience.

Step 4 Once the application is ready to reboot, it prompts to restart and backup data. Click 'OK' button and computer reboots.

Then the DiskGenius WinPE version is launched, which contains same features with the Windows version. Best cad software free for mac.

Step 5 Select computer's primary hard drive where Windows is installed and click 'Erase Sectors' option which can be found under Tools menu.

Step 6 Click Erase button and the software starts wiping the disk.

Note: Once the process finishes, the computer cannot boot to system, as system partition have been erased. You need to make a clean system installation on the hard disk.

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Case 3: Wipe a single file or folder on hard drive

Erasing an entire hard drive takes too much time, and you don't have to do that if you just want to erase certain existing files on the disk. On account that deleting files by emptying Recycle Bin does not wipe data complete, we should do extra operation to make files unrecoverable. Files deleted in this way cannot be recovered by any recovery software or professionals. Let's have a close look at how to wipe files and folders:

Step 1 Launch DiskGenius again, and locate files you want to permanently delete. Select those files and right-click them to choose 'Delete Files Permanently'.

Step 2 Click 'Permanently Delete' button on the popped-up window.

In order to completely delete the file, the application will refill hard drive sectors taken by the file during deletion. By default, it overwrites data by filling zeros which can be modified to random data as well. Besides, you should select 'Delete Directory Entry' option on FAT partition (and the option will be 'Delete File Record in $MFT' on NTFS partition).

Step 3 Click 'Delete' button to confirm the action to be done.

When selected files get deleted, you can continue to delete other data on your computer.

Case 4: Erase deleted files only without affecting existing data

Erasing free space on hard drive overwrites lost files, which does not disturb existing files on the disk. This solution applies to those who just want to overwrite lost files only in order to make lost data unrecoverable. For instance, you've formatted hard drive and reinstalled operating system, what you need to do is erasing all disk area except system; or you've deleted sensitive using Shift + Delete, and want to make sure they are no longer recoverable without affecting existing data.

Step 1 Start Eassos DiskGenius, click 'Tools' menu and select 'Erase Free Space' item.

This function permanently erases unused free disk space, preventing data from being recovered.

Step 2 Select partition / disk for which you want to erase free space and click 'OK' button.

Step 3 Select characters to overwrite disk space and click 'Erase' button.

Steps To Erase Hard Drive And Install Mac Software Download

Step 4 The application starts cleaning unused disk space, which takes long time if free space is very larger.

Method 3: Clean PC hard drive by physically destroying it

Physically destroying a hard drive is also a solution to ensure data is forever unrecoverable. If you are not going to reuse or recycle your hard drive, you can try this solution to clean data.

Step 1 Use a screwdriver to remove all screws on the hard drive case. Then you'll be able to remove enclosure and the main circuit board.

Steps To Erase Hard Drive And Install Mac Software Free

Step 2 Remove platters and heads out of hard drive enclosure, and use a hammer to hit platters. Then repeatedly strike other components.

Step 3 Box up all components and throw them to garbage can.

Summary

Steps To Erase Hard Drive And Install Mac Software Windows 10

This article talks about three methods to wipe a computer, hard drive or removable disk, helping to make sure sensitive data can be erased safely and completely. Files erased by these methods is no longer available for data recovery, thus please make sure important files have been backed up before erasing any storage media. If you feel this article useful, please share it to help more people. If you have better solutions or any questions about this topic, please feel free to contact us.