Solved WipeOut a Disk in MacBook Air

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Hello Guys

i need your help again. I need to wipeout a disk of a MacBook Air and i really don't know what i have to use? There is any Live OS with Linux or Windows via usb BOOT THAT WORKS?

If yes i need to create the USB with MacOS or i can do it also with windows, frankly i never used MacOS too expensive for me. :-|

it's maOS Sierra with an SSD

You can buy DoD level erasure software that will completely remove everything for $50. It is on a DVD or can put on a USB stick.

In Diskutility it miss the "Security Options" and if i have undestand is for the reason below:

"Note: With an SSD drive, Secure Erase and Erasing Free Space are not available in Disk Utility. These options are not needed for an SSD drive because a standard erase makes it difficult to recover data from an SSD. For more security, consider turning on FileVault encryption when you start using your SSD drive."

I need to wipe out the Disk where is the Sierra OS so i would need to boot from another disk? or i can use the disk utility after pressing <cmd>-<R> at the boot..

It could works this command found here wipe ssd on MacOS
for i in $( seq 0 2 ); do dd if=/dev/urandom of=/dev/sda; done

running from an Ubuntu Live usb?

My apologies your post has slipped passed me. Is the goal it have a completely wiped drive or just restore the MacOS?

@ronnie-wong
No problem

We have to sent the MacBook to get repaired and for security reason we "must" wipe out the disk. When will have the MacBook back i'll have to reinstall.....and we'll see how :-). I never worked with apple product so....but first step i have to wipe out. This Macbook has an SSD
Reading some article an some post on various forum seem not necessary to wipe out an SSD because of how it works and also because doing that we reduce the life of the SSD itself, I saw that there are specific product to securely erase SSD(Blancco and Parted Magic) but they are not free and i don't know if i can build a bootable disk with that product for a Mac.

In this moment i have two choice

• 1): Start MacOS in recovery mode and form diskutil run a normal erase(i don't have the "Security Option" ). I read that the security erase is still place in the command line version of diskutil but i don't know how to do it work. Even from the GUI version i don't undestand how the partitions are configured and what i have to delete:
  Using Disk utility form the GUI i saw this:

*/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme 251.0 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk1 250.8 GB disk0s2
/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +250.8 GB disk1
Physical Store disk0s2
1: APFS Volume Macintosh HD 28.5 GB disk1s1
2: APFS Volume Preboot 18.8 MB disk1s2
3: APFS Volume Recovery 506.6 MB disk1s3
4: APFS Volume VM 1.1 GB disk1s4*

and i don't know how interpret the structure of the partitions, What is Disk0 and Disk1? Disk0 is the physical Disk and Disk 1 is a kind of virtual disk inside Disk0? what i would do to run diskutil secureErase ?

• 2) Boot from a Linux Live Usb and Run this command: for i in $( seq 0 2 ); do dd if=/dev/urandom of=/dev/sda; done or using the command wipe or shred risking to reduce the life of the SSD

Any Advice is welcome

@giovanni-baldi,

Even though this guide is older it helps you to find some of the steps you can take to achieve what you want according to what you mentioned in your purpose:

https://www.mactip.net/how-to-securely-wipe-your-mac-hard-drive-before-selling-it/

Tanks as always