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How to Erase Data on Mac’s Hard Drive – Guide
Everyone needs to delete data safely at some point, even on a Mac. After all, securely deleting your data ensures that your personal and private data is not found and misused by someone else. So, when should you delete data from your Mac? Some common scenarios that guarantee the safe deletion of your drive are:
Erasing your Mac’s hard drive: Method 1
This method is classic: Delete all of your information using a multi-pass approach. This ensures that each storage unit on your Mac’s disk is overwritten with new data.
Here it is how to go ahead:
Important note: You cannot erase the Mac drive you are currently using. To do this, restart your Mac while holding down Command-R after the boot bells sound, then select Disk Utility in Recovery Mode. From there, you can select your Mac’s primary hard drive or the drive you want to erase.back to menu ↑
Erasing your Mac’s hard drive: Method 2
First implemented a few years ago by Apple on its notebooks, SSDs can now be found on almost all MacBooks. And they are not only fast, but also extremely secure, making the entire process of securely erasing your hard drive much easier. In fact, with a regular wipe process, most of the data on an SSD should be safely deleted.
However, if you fear that your data may still be recovered by some advanced third-party tool, here is a very simple way to securely delete it from your Mac’s SSD that will also work with conventional hard drives: Using disk encryption FileVault.
As discussed in this entry, FileVault keeps all data on your drive encrypted at all times.
That way, if you use FileVault on your Mac when all the data left on your erased drive will be impossible to access by the next owner of the Mac.
You can also use the method described in the Important note section above to delete the Mac’s hard drive. But since, in this case, the drive that was / is using FileVault, you must first unlock the volume before deleting it.
To do this, in Recovery mode, open Disk Utility and select the disk you want to erase and select File> Unlock “Volume Name”. Then enter the password for your FileVault-enabled account and you will finally be able to erase your Mac drive, which makes the data on your Mac drive completely unrecoverable.
And there it is. Remember these methods whenever you pass your Mac on to someone else forever.back to menu ↑
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