Secure erase ssd disk utility
M ideally it's best NOT to place any data into these newer machines that you rather not share with anyone else, it's the sad fact.
The following command diskutil secureErase 0 /dev/diskX, will erase your disk, identified by X, with a single pass of shadowing let's speak japanese zeros.
We are reissuing it to another user but the data on it I am keen to ensure is totally unrecoverable.Also if a laptop, TimeMachine local backup files also on the boot drive itself are being saved in hidden files.In general, when it comes to traditional mechanical hard drives at least, deleting a file and even emptying your Trash simply removes the file from view.I click Macintosh HD, choose erase, and it erases the entire thing in a matter of seconds.SSD's and flash memory have limited write capability, unlike the unlimited writes of traditional hard drives (which can be scrubbed witha 7x overwrite to meet Department of Defense approval in data destruction).Ml, disk Utility is fine, use cmdr as noted here.I don't see any security options.
Then you can rest easy at night knowing you didnt just toss out a disk containing a complete copy of your financial info.
Fwiw recovering deleted data from SSDs is exorbitantly difficult, and requires highly specialized skills, tools, and knowledge.
You can get a list of the options available to you by issuing the command without any options: diskutil secureErase, usage: diskutil secureErase freespace level Securely erases either a whole disk or a volume's freespace.1 - Single-pass random numbers.Disk Drill software is able to reconstruct a drive.What Happens When You Delete a File.Only the traditional (100) hard drives (not "Fusion Drives" or "Hybrids can be securely erased, nothing that has any flash memory.For most users a single pass each of 1s and 0s will be enough, but if your drive contains data from certain industries such as health or government, youll want to use the more robust levels which write up to seven passes over every sector.Once it powers up and mounts in Finder, launch Disk Utility (found in the.