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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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Shredding my SSDs (NVMe) under linux? (feddit.org)

submitted 2 weeks ago by sp3ctre@feddit.org to c/linux@lemmy.ml

52 comments fedilink hide all child comments

Hey guys,

I want to shred/sanitize my SSDs. If it was a normal harddrive I would stick to ShredOS / nwipe, but since SSD's seem to be a little more complicated, I need your advice.

When reading through some posts in the internet, many people recommend using the software from the manufacturer for sanitizing. Currently I am using the SSD SN850X from Western digital, but I also have a SSD 990 PRO from Samsung. Both manufacturers don't seem to have a specialized linux-compatible software to perform this kind of action.

How would be your approach to shred your SSD (without physically destroying it)?

~sp3ctre

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[–] solrize@lemmy.ml 14 points 2 weeks ago (2 children)

Don't ever write any really private data to the SSD in cleartext. Use an encrypted file system. "Erase" by throwing away the key. That said, for modern fast SSD's the performance overhead of the encryption might be a problem. For the old SATA SSD in my laptop, I don't notice it.

[–] HelloRoot@lemy.lol 9 points 2 weeks ago (1 children)

That said, for modern fast SSD’s the performance overhead of the encryption might be a problem.

How so? I've been running LUKS on modern NVMEs for years and there is just the same maybe at worst 10% hit in write/read speeds.

[–] hendrik@palaver.p3x.de 3 points 2 weeks ago

That's also my experience. There isn't really any noticeable performance hit, even on modern SSDs. It should be the same amount of data coming from the SSD anyway, since the SSD isn't even the part doing the cryptography (with LUKS), so it shouldn't have any effect. And the CPU handles the decryption just fine

[–] uawarebrah@sh.itjust.works 2 points 2 weeks ago

There is no discernible performance hit