Questions about secure erase in disk utilities.

hajime

macrumors 603
Original poster
Jul 23, 2007
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Hi, I have been trying to use it to secure erase data of an external Nvme 2TB SSD connected to the MBP 2010 17" via a usb adapter. From 8am to 6pm, all I see is starting secure erase. There is no progress in the progress bar at all. Is this normal? At one point, I closed the lid of the MBP and went out for three hours. When I returned, I just opened the LCD lid. Can I assume that the disk utilities resume from what it left off or somehow I messed up with the secure erase and need to restart all over again?
 

hobowankenobi

macrumors 6502a
Aug 27, 2015
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on the land line mr. smith.
Secure erase will write zeros to the entire drive....so you just asked the drive to write 2TB, through a USB 2 hub.

Secure erase can actually wear or damage drives...so perhaps skip it? Or consider using special tools.

As for closing the lid...USB drives typically unmount on sleep, so that could be an issue.

Just format the drive normally with a simple erase; no need to abuse it!
 

BrianBaughn

macrumors 603
Feb 13, 2011
6,365
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Baltimore, Maryland
I had a Samsung SSD that went bad...errors were reported in one utility or the other. Checking it with Samsung's own tools confirmed the problem.

Before I sent it back, I used Samsung's secure erase tool for their SSDs...which I had put on a bootable USB stick. The process took a couple of seconds.
 
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hajime

macrumors 603
Original poster
Jul 23, 2007
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Putting the MBP to sleep during secure erase actually confused the disk utilities program. Nothing happened until I force quit and restart the process again.