Data Deleted from SSD

why deleted recovery is not possible in SSD

Deleted file recovery is not always possible in SSDs (Solid State Drives) because of the way in which they store data. SSDs use flash memory to store data, which is different from the magnetic disk technology used in traditional hard disk drives (HDDs).

When you delete a file on an HDD, the data is not immediately removed from the disk. Instead, the file system simply marks the area of the disk where the file was stored as available for new data to be written to. This means that the data may still be recoverable until new data is written over it.

However, in SSDs, data is stored differently. When you delete a file on an SSD, the controller of the SSD marks the cells in which the data was stored as “invalid,” rather than immediately erasing the data. This is because the process of erasing data in SSDs is different from HDDs, and involves a technique called “garbage collection” where the cells marked as “invalid” are erased and consolidated with other cells that are no longer in use.

Because of this process, deleted data on an SSD is quickly overwritten by new data as the SSD is used, making it much more difficult to recover the deleted data. Additionally, the process of garbage collection can sometimes permanently erase the deleted data, making it unrecoverable.

However, there are some data recovery techniques that can still be used to recover deleted data on SSDs, such as using specialized data recovery software or working with a professional data recovery service provider who has experience in recovering data from SSDs. It is important to note that the success of these techniques depends on various factors such as the amount of time that has passed since the data was deleted, the frequency of garbage collection processes, and the overall condition of the SSD.