Did you hear about data deletion on SSD? In fact, it is still a bit of a way

No matter who it is, it will inevitably lead to the accidental deletion of files, so pinching, Windows has a "recycling station" protection mechanism from the beginning. But I can't stand to see if obsessive-compulsive patients clean up. After all, right-click on the "Empty" option, and they are really erased from the hard drive.

Well, when we come to this stage, we have finally saved our lives by using software to try to recover the data, but it is definitely not the next time it works. This is a good idea for traditional mechanical hard drives, although it cannot be said to be 100%. However, the success rate is more than 50%. However, it is not easy to say in SSD, and it really defeated in ten trials. Why the success rate of SSD is so low, the key problem is that it is completely different from the mechanical hard disk data storage.

The knowledge related to mechanical hard disk Everyone from the "Solid State ups and ups mechanical hard disk you do not think about it? "Get nutrition inside it, Xiaobian talk about SSD. Its use of flash memory as a storage medium is known to all people on the planet (Martians should also know it). The problem is here. SSDs need to be erased before new data is written, and then the manufacturers must ensure that the SSD is ready at any time. Where it can be written, the loss of each flash module is evenly distributed (ie, the lifetime, flash memory is limited by the number of write cycles), and is recorded and maintained using a dynamic link list called FTL.

Because it is a dynamic record, the location of the SSD data storage and the external access address do not correspond. For example, if we use the ABCD flash memory module to name them, in the traditional thinking, the file on the C drive must exist. Flash A? But in fact, no one except the SSD controller knows which module the actual data is in. Using data recovery software according to the record before the operating system, will definitely not be found!

In addition to the Trim command to make SSDs last longer, when we delete data, it allows the SSD to clean up the data, instead of storing it like a mechanical hard disk. New data comes in and erases the overlay. With these two people sitting, it is really hard to recover data (SSD can lose files for a long time without using it).

What are the SSDs that can recover data? Did not open Trim in Windows. If you want to know if your SSD is already using Trim, you can start the command prompt in administrator mode.

Fsutil behavior QUERY DisableDeleteNotify

If "DisableDeleteNotify = 0" is displayed, it is opened, "1" is not open, and data recovery is expected.

If we don't care much about the service life of SSDs, just for data security, shut it down and enter "fsutil behavior set disabledeletenotify 1" at the command prompt (administrator)! However, Xiao Bian thinks that now that SSDs are so expensive, how cheap are mechanical hard disks, and it is not better to develop the habit of backing up important data onto mechanical hard disks? Or as we recommend to everyone, small-capacity SSDs only install systems, and mechanical hard drives are a good solution for data protection.