A cruel fact: SSD recovery success rate is much lower than mechanical disk
The data of our stores is roughly: the success rate of physical failure recovery of mechanical hard drive is around 70%.(The cleanroom platter recovery of cleanroom is very mature.) The success rate of SSD's "completely unrecognized" failure is much lower. In many cases, it is directly told that "it cannot be saved". This is not a matter of technical skill, but of how SSDs are designed.
First distinguish between two types of SSD faults, the processing logic is completely different:
- logic fault: Disk can also identify, mistakenly deleted files, wrong format, partition loss. This kind of rescue, but there is a major premise-see TRIM below.
- physical fault: The disk is not recognized, the disk is dropped, the BIOS does not see it, the capacity is displayed as 0 or abnormal. This type is difficult.
II. TRIM: A Mechanism for Turning "Delete" into True Delete
When deleting files on a mechanical disk, the system just makes a "deleted" mark in the directory. The data itself is still lying on the disk, so the error deletion recovery software can scan it. SSD is different: after deleting files, the operating system will send a TRIM command to tell SSD "These blocks are not needed". SSD master will put these flash blocks when idle.evacuate physically(For the next write do not erase first, ensure speed).
This means that files deleted by mistake on SSD are likely to be lost if they are powered on overnight. The recovery window is measured in minutes, not days.
So the first rule of SSD deletion:Power off immediately.. It is not "use less computer", it is power failure-as long as the disk is still on, the garbage collection (GC) of the master will silently empty your deleted data in the background. The laptop will be shut down directly and the battery will be unplugged (if it can be unplugged). The desktop will be powered off, and then the disk will be removed and connected to the read-only device scan.
Third, the master control is damaged: the data is still in the particles, but the "key" is gone.
80% of SSD physical failures are in the main control or firmware, and the flash particles themselves are often not bad. Can't you remove the particles and read them directly? The difficulty lies in two points:
- The data is encrypted and scattered.The master writes data slices and interleaves to multiple particles. Most modern SSDs also have hardware AES encryption, and the key is stored in the master. The particles are disassembled and read out as ciphertext fragments, which must be restored with the algorithm + key of the same type of master. This is why SSD recovery depends onmast level repair(Change the firmware parameters of the same model master control transplant, or repair the power supply/crystal oscillator to revive the original master control), rather than the "cleanroom platter recovery for magnetic heads" of mechanical disks.
- Firmware damage is more troublesome.SSD FTL (flash translation layer, record "logical address → physical block" mapping table) If the firmware area is damaged, it means that the index of the library is burned, the book is still there but cannot be found, and the mapping needs to be reconstructed by particle analysis. The workload and uncertainty are both large.
Common master fault performance: power-on disk (disappear in a while), BIOS identification capacity of 0 or 8MB and other abnormal values, disk body heating abnormalities. Samsung, Kingston, Western Digital, state these big brands have batch rollover models, such as a few years ago a certain model firmware door led to collective disk loss.
IV. Case: A Samsung 970 EVO Plus, saving graduation thesis and engineering data
In June 2026, a graduate student in University Town sent a Lenovo Legion Y7000P. The symptom was that it couldn't enter the system after booting. Sometimes there was no 512GB 970 EVO Plus (typical disk drop) in the BIOS. There were the first draft of graduation thesis and two years of experimental data in the disk, but there was no backup.
Treatment process: Don't try again and again-every time you try is a risk. Remove the disk and connect it to the PC-3000 Portable. After power on, the disk can recognize but timeout when reading any sector. It is judged that the main control firmware area is abnormal. The luck of this disk is that the main control (Phoenix) database of 970 EVO Plus is mature, and it enters safe mode with manufacturer-level tools.(ROM mode), the reconstruction of the firmware area of the translator disk recovery after recognition. Full disk image found that about 1.2% of the block read instability, with slow mode to make up for reading. The final export of data, papers and experimental data integrity, charges RMB 1800 (firmware repair + full disk image export).
There are also negative cases: a miscellaneous 256GB SSD in the same month (a model not available in the master database), the master completely broke down, the particles were white without identification, and finally failed to recover. This is the reality of SSD recovery--The success rate of brand plate is significantly higher than that of miscellaneous plate, because the tool chain support is different. Buy SSD do not buy cheap miscellaneous brand, data account to be included.
V. SSD data recovery fee reference in 2026
| fault type | Reference Price | Notes |
|---|---|---|
| Logic failure (mis-deletion/mis-formatting, disk identifiable) | RMB 300–800 | Success rates drop sharply over time due to TRIM |
| Firmware damage (disk drop/not recognized, master can be repaired) | RMB 1200–2500 | Mainstream brand success rate is high, miscellaneous brand depends on luck |
| Master level repair (change master/transplant firmware parameters) | RMB 2000–4000 | The same type of material plate is required, the cycle is 3-7 days |
| Particle-level analysis (master control scrap, particle disassembly reconstruction mapping) | $4000 to evaluate first. | Encryption particles may not be solved, quote after evaluation |
Industry practice is alsoNo recovery fee will be charged if the recovery fails. Testing and evaluation are generally free or charge a small testing fee (which can be offset against the recovery fee).
VI. 5 Habits to Protect Data in SSD Era
- Important data always more than two copies.SSD era "Data Recovery" is not a reliable bottom, backup is. 3-2-1 principle: local + mobile hard drive/NAS+ cloud, at least two copies.
- Buy brand plate, keep proof of purchase.The master database of Samsung, Western Digital, Armor, State, Kingston and other big brands is mature, and the recovery success rate is significantly higher; at the same time, the big brand warranty is also true (5 years warranty). The miscellaneous white plate saves RMB 200, and the bet is all data.
- SSD is not full.When the remaining space is less than 10%, the wear balance of the main control and the garbage collection pressure are large, and the failure rate rises. The 512GB disk holds 480GB of data for a long time, which is dancing on the steel wire.
- Abnormality immediately cut off power for repair.Change card, occasional blue screen, file inexplicable damage, BIOS recognition is good or bad-these are all precursors of disk loss, don't "wait and see".
- Laptop important users with a docking station + removable hard drive.Dragging it over once a week to backup critical directories takes ten minutes rather than thousands of RMB to recover your data afterwards.
SSD problem, the first step is always to power off, and then call 020-39029800. The phone clearly reported the brand model capacity and symptoms, we can first determine which way to go, worth saving.