4 ms·
There is also a cryptographic erase option on secure erase if the drive supports it. It is nearly instantaneous and you can follow up with other slower methods
by pkaye 11y ago
There is also a cryptographic erase option on secure erase if the drive supports it. It is nearly instantaneous and you can follow up with other slower methods if desired.
Also for SSDs, using the secure erase method is important because of overprovisioning and garbage collection. If that is not available, on most SSD algorithms, doing two full pass writes (with random sector data if drive supported compression) will get you close to wiping out all contents as possible.
- theandrewbailey 11y agoThe OPAL standard has that cryptographic erase function. I've used it before, but did not deeply verify if any data was recoverable. At least the partition table was gone. In theory, the command destroys the old key and creates a new one that the drive uses to read and write data. A different key means everything is noise. You do need access to the printed label on the drive itself to do it (for the PSID). https://github.com/Drive-Trust-Alliance/sedutil/blob/master/linux/PSIDRevert_LINUX.txt https://github.com/Drive-Trust-Alliance/sedutil/blob/master/...