Hi … How can i wipe, erase all SSD WD BLACK S/N 850 using dd command ? … What happen with de WD BLACK firmware ?
dd is unreliable for that purpose on an SSD because of the overprovisioning. Better is to use
sudo blkdiscard -sf /dev/name-of-device-here
The firmware will normally not be touched by this. It’s located in a section of the device that isn’t accessible from userspace.
Can you explain me how to work this command ?
I gave you the command, in post #2. The one thing I cannot give you is the exact device special file to supply as the command parameter, because I’m not at your computer.
This command wipe the entirety storage ?
Yes, it will.
Ok, thanks a lot
The system returns me BLKDISCARD ioctl failed: opration not supported
Be careful and make sure you’re using the correct device name.
Don’t run it on a mounted file-system or another device by accident.
Can you paste the exact command you were using?
I run the command from a live usb and the storage name is correct
Command: sudo -sf blkdiscard -sf /dev/name-device
Be careful what you type. This is what Aragorn posted above.
name-of-the-device he meant what is the name of the device in the system that you are willing to erase.
To get the name, simply run
Under the name column it will give you the name of the device.
Replace that with
name-device in your command that you are trying to run. Hope that helps.
This is an interesting paper on the subject
It is referenced on the Arch Wiki in the topic
You may also find the following article enlightening
I’know, sorry but don’t work
sudo blkdiscard -sf /dev/nvme0n1
Operation don’t supported
That one is easy - your device does not support this - because it is NVMe which is implemented differently.
Install the package
nvme-cli - then take a look at the man page
The utility has a subcommand nvme-write-zeroes(1) which may be what you are looking for.
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