Secure Erase rMBP before exchange?

[OSMac]

Exchanging a rMBP, rebooted into recovery and ran disk utility.
Only the erase button was available the security button was greyed out.

Is a standard erase all that is needed to wipe data on the SSD?

 

[iMacDragon]

Exchanging a rMBP, rebooted into recovery and ran disk utility.
Only the erase button was available the security button was greyed out.

Is a standard erase all that is needed to wipe data on the SSD?

If they've implemented it correctly, it should be. On an SSD there is a function to do a quick wipe of whole drive that essentially tells the controller to mark the whole drive as available again ( and on some controllers at least throw away internal encryption key so that any date stored on drive is non recoverable even by direct hardware access, don't know if this applies to what apple use in rMPB or not ), and any reads will return 0's until written to sector.

 

[OSMac]

If they've implemented it correctly, it should be. On an SSD there is a function to do a quick wipe of whole drive that essentially tells the controller to mark the whole drive as available again ( and on some controllers at least throw away internal encryption key so that any date stored on drive is non recoverable even by direct hardware access, don't know if this applies to what apple use in rMPB or not ), and any reads will return 0's until written to sector.

Interesting.

Also found this suggestion:

1) Boot into recovery mode and standard erase the partition using disk utility and reinstall the os.
2) Then Boot into recovery again and open a terminal window and enter:

diskutil secureerase freespace 0 disk0s2

That is assuming disk0s2 is the main osx partition, it was on my rMBP.