Best way to wipe HD?

vtyler98

macrumors member
Original poster
Jul 27, 2011
44
0
What is the best way to securely wipe the SSD on my 13" macbook air? I plan to list it for sale soon and get the newest macbook air when it comes out and I was wondering what would be the recommended way to securely wipe the data on my computer? I've read different theories but I'm not really sure which is the best way and how to do it? Thanks in advance!
 

DockMac

macrumors regular
Dec 22, 2008
184
1
Disk Utility

Disk Utility > Select Volume to Delete > Erase > Security Options > Single Pass ... Click Erase and WAIT...

The more passes, the longer it will take.

----------

BTW, you will probably need to boot off an external drive to accomplish this.
 
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vtyler98

macrumors member
Original poster
Jul 27, 2011
44
0
Disk Utility > Select Volume to Delete > Erase > Security Options > Single Pass ... Click Erase and WAIT...

The more passes, the longer it will take.

----------

BTW, you will probably need to boot off an external drive to accomplish this.
Hmm when I go to disk utility and the erase tab, I see the erase, security options, and erase free space options but they are greyed out where I can't click on them?
 
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angemon89

macrumors 68000
Hmm when I go to disk utility and the erase tab, I see the erase, security options, and erase free space options but they are greyed out where I can't click on them?
That's because you can't erase the drive while you're using it. You need to boot from your install CD and then erase the drive.

Just to be clear, you wont be able to boot your computer after you do that (until you install the OS again)
 
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mrat93

macrumors 68000
Dec 30, 2006
1,520
135
Hmm when I go to disk utility and the erase tab, I see the erase, security options, and erase free space options but they are greyed out where I can't click on them?
Try doing the same steps, but get to Disk Utility through Recovery HD. Hold option when booting, and select "Recovery HD."
 
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DockMac

macrumors regular
Dec 22, 2008
184
1
Hmm when I go to disk utility and the erase tab, I see the erase, security options, and erase free space options but they are greyed out where I can't click on them?
Yeah, either boot of an external drive or go to the recovery HD. You should be able to click them then!
 
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EmaDaCuz

macrumors regular
Apr 30, 2012
152
55
From a terminal/console,

Code:
dd if=/dev/urandom of=/dev/disk*
where /dev/disk* is your hard drive. You can get the correct device by launchin

Code:
diskutil list
 
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