It doesn't have a classic hard-drive. It has an NVME, its already at the top of the performance chart hard-drive wise.
I didn't pay attention to you writing NVMe, it's just an improved version of the SSD which is using PCI Express interface compared to SATA protocol.
I am surprised none of the guys here have mentioned about this. Firstly, I would like to say that no matter how many wipes or formats you do over the hard drive, the data can still be recovered. I have myself recovered wiped data using some tools.
How do you think no one mentioned that there is always chance to get some data even from disk that is erased? mk4 is say :
"probably just swap out the hard drive", and I say
"regardless of all the methods that exist to completely erase the data, the risk is always there".
Therefore, the only 100% secure method is not to sell a computer with a hard drive that contained confidential data, and private keys are something that definitely falls into that category.
I have never heard anybody recovering the data from a hard drive which is "completely DBANed".
You can do research over this tool. It is open source.
If you do find information if someone has actually recovered data after a DBAN then please let me know since I would have to inform other friends of mine regarding the same.