From the macOS Utilities window, select Disk Utility, then click Continue.Ģ.Ět command prompt, type diskutil secureErase freespace then hit Return. Release them when the Apple logo appears. Steps are as follows:Ī.ğor non-startup disk or volume, go to Finder > Applications > Utilities > Disk Utility.ī.ğor startup disk, start or restart your Mac, then press-hold Command + R keys. When you are selling, donating, or dumping your old Mac hard drive, back up the drive's data then wipe your drive by using Disk Utility's secure erase feature. Erase Mac Hard Drive by Using Disk Utility
#STELLAR WIPE MAC FREE SPACE SOFTWARE#
The next section describes a native method to wipe hard drive to remove all files at once and a third-party software method to erase any particular files securely.
#STELLAR WIPE MAC FREE SPACE HOW TO#
So the question arises, how to erase deleted files on Mac so that they can't be recovered by any data recovery software. And, you may suffer from financial loss, identity theft, reputation loss, or business loss. This operation occurs when you save any file on the storage drive.Īny malicious user who gains unauthorized access to your Mac or Mac storage drive can use a professional Mac data recovery software to scan the drive based on file signatures and retrieve the marooned files. So, the deleted files remain in an isolated state in the storage disk, ready to be overwritten by other files during the disk write operation. Instead, it marks the files as deleted in the storage drive's file system to speed up the deletion process.
In such a case, macOS doesn't remove the deleted files by overwriting the storage space with 0s, 1s, or random bits. That's true if your Mac has SSD with TRIM command enabled, which removes the deleted files during garbage collection.īut when your Mac has a hard drive, hybrid drive, or SSD with TRIM command disabled, the data deletion mechanism is rather different. And, you can't get your deleted files back unless you have a Time Machine backup. When you delete your files on Mac by using the Option + Command + Delete keys or by removing temporarily deleted files directly from Trash or by emptying Trash, you might have the impression that the files are removed permanently from your Mac.
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