How to Recover data from SSD – SSD Recovery Software
On a traditional hard disk drive, if a file is deleted, it’s only the index that has been removed. To the file system, the file is deleted and the space it takes is marked as “not in use”. But in fact, the file still exists as raw data on the hard drive. When the operating system requires more space, it will simply overwrite this “not in use” space. A traditional hard disk drive is able to overwrite data in one single operation, but a solid state drive first has to erase all data in this “not in use” space before it is able to record the new data.
A solid-state drive differs from a traditional hard disk drive in that it has no moving mechanical parts. It is mainly comprised of a controller, flash memories, and cache or buffer.This underlying difference defines how they store, read, and delete data. In traditional hard drive, if a file is deleted, it’s only the index that has been removed, which means the real content still remains until that space is occupied by new data. But in SSD, the content will be removed immediately after a file was deleted under the effect of TRIM.
The TRIM command is designed to enable the operating system to notify the SSD which pages no longer contain valid data due to erases either by the user or operating system itself. During a delete operation, the OS will mark the sectors as free for new data and send a TRIM command to the SSD to mark them as not containing valid data. After that the SSD knows not to preserve the contents of the block when writing a page. As a result, as long as TRIM is enabled when SSD is using, SSD data recovery will become nearly impossible. But there are probabilities that your data can be recovered from SSDs with proper SSD data recovery software under certain conditions.
- TRIM is not effective in RAID environments.
- Trim is not effective in external SSD drives with USB connection cables.
- Older Operating system and older types of SSDs doesn’t support TRIM.
- Not all file systems support TRIM. (In Windows, only NTFS)
If you met any of those conditions, you’re able to get your lost data back by using SSD data recovery software. Here is a guide about how to make SSD data recovery work.
Step 1. Connect your SSD to your computer and launch H Data Recovery. Then choose one of the recovery modes. Hover your cursor over the buttons to see the detailed description of each mode. For the recovery of accidentally deleted files, we would recommend Accidental deletion mode. If you want a thorough and deep scan, choose the Universal Recovery mode instead.
Step 2. Select the partition where your files used to be before they get deleted. If you’re using Universal Recovery mode, select the physical drive. Click Next to start the scan process.
Step3. Recover data from the solid state drive. After scanning, it will list all of your lost files it can find on the left. You can click the filename to preview it in the window. Then select the files you want to recover and click “Next” to begin recovering deleted files from SSD.
SSD Data Recovery works pretty simpler as any traditional HDD recovery works except, the software will try to read data from flash chips instead of platters and might take enough time to scan one whole drive. You can free download H Data Recovery to recover data from various instances of data loss from SSD, and take advantage of the free trial policy to evaluate the final result.