Samsung TRIM error could be wiping data

samsung ssd bug wiping data 840 evo solid state drive
TRIM is a very important function for SSDs, without which their performance degrades over time to the point where you wonder if it was ever faster than that hard drive you replaced. However, like everything else to do with personal computing, it doesn’t always work as intended, and that looks to be what’s happening with a batch of potentially buggy Samsung drives.

An engineer from the search firm Algolia claims to have discovered a bug in the way the drive reallocates blocks of data. Instead of only zeroing areas which contain previously deleted data as they are supposed to, the drives appear to be deleting 512-byte blocks in random locations on the drive. That can mean large files become corrupted and those that are closer to that byte-size can be overwritten, making any hope of recovery very distant.

Related: Worried about SSD durability? A recently finished experiment will help you rest easy

This finding obviously warranted investigation, so the Algolia engineer ran tests (via TR) and tried different hardware, and ultimately discovered that the root of the issue seemed to be with the Samsung drives’ controllers issuing faulty commands. And while this didn’t appear to be related to the fact that the SSDs were running a Linux server, it can’t be ruled out at this time.

The drives confirmed to be problematic include:

  • Samsung MZ7WD480HCGM-00003 (SM843TN)
  • Samsung MZ7GE480HMHP-00003 (PM853T)
  • Samsung MZ7GE240HMGR-00003 (PM853T)
  • Samsung SSD 840 PRO Series
  • Samsung SSD 850 PRO 512GB

If this does turn out to be a fault in the Samsung drives, it wouldn’t be the first that users have run into as of late. The Korean electronics maker recently issued firmware updates for problems with the 840 EVO SSD, which had seen strange reductions in its read speed.

Have you got a Samsung SSD? If so, have you run into random data corruption issues?

Mobile

Think iPhones can’t get viruses? Our expert explains why it could happen

If your iPhone has been acting strangely, then you may be concerned about the possibility it is infected with a virus or some malware. We take a look at just how likely that is and explain why iOS is considered relatively safe.
Mobile

Leaked ZTE concept phones are crazy, possibly fake, and totally worth seeing

Renders of what may be ZTE concept phones may show how the manufacturer could avoid using the notch on future devices. They're crazy -- and maybe not even real -- but they're definitely worth looking at.
Mobile

Latest Samsung Galaxy smartphone will pop up on April 10

Samsung will show at least one new Galaxy phone off on April 10, it has confirmed in a teaser tweet. The Galaxy A90 may make its first appearance, and it's rumored to have a pop-up camera and a notch-less screen.
Gaming

Your PlayStation 4 game library isn't complete without these games

Looking for the best PS4 games out there? Out of the massive crop of titles available, we selected the best you should buy. No matter what your genre of choice may be, there's something here for you.
Computing

Here are the best affordable monitors for your budget desktop

Looking for the best budget monitors? These monitors are affordable, but still provide the features you need for gaming, work, home or other plans! Take a look at the displays and your wallet will thank you.
Computing

This limited-time Dell deal cuts $330 off the price of the XPS 15

Dell is currently running a limited-time sale that is cutting the pricing on the XPS 15 down by $330, but only through Thursday, March 21, and with the use of a special coupon code. 
Product Review

The Lenovo Legion Y740 brings RTX 2080 graphics power for under $2,500

Coming with the Intel Core i7-8750H processor, Nvidia GeForce RTX 2080 Max-Q graphics, 16GB of RAM, and a 256GB PCIe NVMe SSD, the Legion Y740 one big beast. But priced at under $2,500 how does Lenovo’s Legion stand up against the crowd?
Mobile

Google hit with another fine by the EU, this time for $1.7 billion

Google has been fined for the third time by the EU, this time for breaching antitrust laws by requiring third-party websites using its search function to prioritize its ads over competitors.
Computing

If you have $5,200, Apple has 256GB of RAM for your iMac Pro

Professionals looking to run intensive applications will be able to push their work a bit further with Apple's latest iMac Pro, which holds 256GB of DD4 ECC RAM for $5,200. Here's why it costs so much to upgrade your iMac Pro to the top.
Computing

Don’t be fooled! Study exposes most popular phishing email subject lines

Phishing emails are on the rise and a new study out by the cybersecurity company Barracuda has exposed some of the most common phishing email subject lines used to exploit businesses. 
Deals

From Air to Pro, here are the best MacBook deals for March 2019

If you’re in the market for a new Apple laptop, let us make your work a little easier: We hunted down the best up-to-date MacBook deals available online right now from various retailers.
Computing

Oculus shows off the Rift S, plans to phase out its original VR headset

Oculus plans to phase out its flagship Rift VR headset for its newly created Rift S. The Rift S made its debut this week at the 2019 Game Developers Conference and is expected to be released in spring 2019.
Computing

Secure your Excel documents with a password by following these quick steps

Excel documents are used by people and businesses all over the world. Given how often they contain sensitive information, it makes sense to keep them from the wrong eyes. Thankfully, it's easy to secure them with a password.
Computing

Get the best of both worlds by sharing your data on MacOS and Windows

Compatibility issues between Microsoft Windows and Apple MacOS may have diminished sharply over the years, but that doesn't mean they've completely disappeared. Here's how to make an external drive work between both operating systems.