You can wipe your Mac computer — or, in other words, factory reset it — through the macOS Utilities menu. This is a good plan if your Mac is malfunctioning, or you're looking to sell it. Enter a name for your hard disk, choose Mac OS Extended (Journaled) or APFS to Format. Click Erase to begin erasing your disk. How to use Disk Utility to wipe the Startup Volume or Disk. Different from wipe the external Hard Disk, we need to startup the Mac from macOS Recovery mode to wipe the startup volume or hard Disk./p 1. Securely Wipe the Free Space on Your Mac Using CCleaner. CCleaner for Mac has fewer tools available than CCleaner for Windows.But you can use it to securely wipe the free space on an HDD using the. Second part you over think it way too much with the paranoia format the thing it will wipe everything for you or do the secure command. 2) It means that the trim function is enabled the OS will think the deleted space is available for use. If necessary it uses it, once used the data there before is now gone. Shut down your Mac, turn it on while holding down Command+R. Your Mac will boot into the recovery partition. If you're using an older Mac (from 2010 or earlier), there's a chance that you can't use Recovery Mode. On those devices, hold 'Option' while turning your computer on, then select the recovery partition instead.
by Shirly Chen, updated on 2016-10-10 to Mac Data Wipe
Permanently Wipe Data under Mac OS X 10.10 Yosemite
Is there any way to permanently destroy and wipe data from Mac 10.10 Yosemite computers? When you remove the files to trash bin and empty the trash bin, your files are not permanently lost. They remain on your Yosemite Mac and can be recovered by Mac data recovery software. In order to shred and destroy files on Macs which have installed OS X 10.10 Yosemite, you need special data erasure tool.
DoYourData Super Eraser for Mac is a powerful data erasure tool. It can help you easily and securely destroy and wipe data from Yosemite 10.10 Mac computers, leaving no chance of data recovery. It not only wipes the data, but it also overwrites the disk space of the wiped data to make data recovery impossible. It means your data on the Yosemite 10.10 Mac will be permanently lost after being wiped by DoYourData Super Eraser for Mac. DoYourData Super Eraser for Mac offers three data erasure modes for you to permanently destroying and wiping data under Mac OS X Yosemite 10.10.
1. Selectively destroy files or folders under Mac OS X 10.10 Yosemite
DoYourData Super Eraser for Mac allows you to shred & destroy files or folders under Mac OS X 10.10 Yosemite. Just launch this software on your Mac, you will see the first data erasure mode – Erase Files/Folders. What you need to do is adding the files or folders you want to wipe off your 10.10 Yosemite Mac computer. After adding the files/folders to the erasure list, you just need to click on 'Erase Now' button to permanently destroy the selected files/folders under Mac OS X 10.10 Yosemite. Meet the meat mac os.
2. Wipe entire hard drive under Mac OS X 10.10 Yosemite
In some cases you need to destroy and wipe all your Mac data under 10.10 Yosemite. This mode 'Wipe Volume/Device' can help you wipe the entire hard drive to destroy and wipe all the existing data and deleted/lost data on the hard drive under Mac OS X 10.10 Yosemite. It will wipe all the data and traces on the selected hard drive on your Yosemite 10.10 Mac computer, beyond the scope of data recovery. It also can wipe data from external hard drive, USB flash drive and digital camera under Mac OS X 10.10 Yosemite.
3. Wipe unused disk space under Mac OS X 10.10 Yosemite
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The deleted and lost data is stored in the unused disk space of hard disk drive on your Mac. If you only want to wipe the deleted/lost data, this mode is the best option. It will wipe the unused disk space under Mac OS X 10.10 Yosemite and destroy all the deleted/lost data without affecting the existing data.
Because that DoYourData Super Eraser for Mac will permanently destroy and wipe data under Mac OS X 10.10 Yosemite, so please back up your useful files to another hard drive before using DoYourData Super Eraser for Mac. It is strongly recommended to destroy and wipe all sensitive data before you sell/donate/giveaway your Mac computers or storage media devices. DoYourData Super Eraser for Mac also is the best option to clean Mac hard drive, format hard drive under OS X 10.10 Yosemite.
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Permanently and securely erase data from hard drive or external storage device under Mac OS with certified data erasure methods.
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