2.5-inch · SATA 6Gb/s · 7mm and 9.5mm
The small 2.5-inch box is the SSD that replaced the laptop hard disk, and millions are still at work in desktops, older laptops, consoles and NAS units. At this end of the market a handful of controller makers — chiefly Phison, Silicon Motion, Samsung, Marvell and Realtek — sit behind dozens of badges. When a budget SATA drive fails, it very often fails as its controller rather than as its brand: a Kingston A400, a Patriot Burst and a Silicon Power S55 all report SATAFIRM S11 for the same reason. A single SATA SSD is £300 + VAT after the free look, the figure in writing before any chargeable work, 3–5 days at the bench, and no data means no bill on most jobs.
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| What is going on | The usual reason for it | Where that leaves you |
|---|---|---|
| SATAFIRM S11 | A Phison S11 fallen back on its ROM because its firmware would not validate | Recoverable on the bench; keep well away from the factory tool |
| 8MB, serial BAD_CTX (Intel 320) | The documented firmware fault after power loss | Firmware-level recovery; the flash is untouched |
| Pending sectors appearing and clearing (MX500) | A known reporting quirk on Silicon Motion firmware | Not in itself a failure; back up and watch it |
| Uncorrectable error count climbing | Flash wearing or weak | Image now, while it still answers |
| Shown at 0GB, or with a strange name such as SM2258AB | A Silicon Motion controller in ROM mode | Bench work; do not initialise it |
| It has gone read-only | Spare blocks exhausted, drive protecting itself | Usually fully readable |
A case number goes on it the day the parcel is opened, and an engineer settles what has actually failed before anything else happens. The drive is read on our own equipment, never in a computer that might send it a TRIM command. Back to you come two things together: a straight note of what is liftable and what is not, plus one figure, fixed and written down. Accept it, or decline and owe us nothing.
Every power-on gives a failing SSD another chance to run its own housekeeping. Here the drive is brought up in the controller's diagnostic state instead, which lets the bench speak to the flash directly and keeps damaged firmware out of the conversation.
On a SATA drive the controller is dropped into its diagnostic state through the SATA port, a temporary loader goes into its RAM, and the map is rebuilt from the service area. Nothing is written to the flash. Where the controller is dead the chips come off and are read directly, with the interleaving and scrambling undone in software.
Nothing is worked on live. The whole drive is imaged once, weak pages retried in their own passes, and the file system is put back together on the image. Encrypted volumes are unlocked there too, with the key you supply, and never on the original.
What was recovered is listed for you first, and only then does a bill exist. Approve the list and it is invoiced; turn it down and it is not — and where nothing has come back, most jobs carry no charge at all. Recovered data travels home on fresh media bought in for your job, with the postage at our end. Your case is not closed until you have opened the files on a machine of your own.
A family PC stopped booting, and the BIOS listed the drive as SATAFIRM S11. Nothing had been run against it, which mattered. On the bench the controller took a loader into its RAM, the service area read back cleanly, and the translation table was rebuilt from it. Ten years of photographs and the household accounts came off in one pass.
Illustrative example — replace with a genuine caseNo. It is the name the Phison PS3111-S11 controller gives itself when it cannot load its own firmware and drops into ROM mode. Nothing has been infected; the drive is simply reporting the chip instead of the badge. There is a whole page on it under symptoms.
We recover the data. We do not recommend trusting the drive again, and we say so on the file list that goes back with the job.
Because it is very probably not a Samsung. Samsung controllers never emit that string; a counterfeit with a Phison controller inside does. The data is still recoverable, as a Phison drive.
Only if the drive is healthy. A drive that is failing behaves differently through a bridge, and the bridge hides the messages we need. Send it in bare.
3–5 days at the bench after the free look, for one drive.
Looking at it is free. Back comes a list of what opened and what did not, together with a single price to finish, set down in writing while you are still free to say no. On most jobs an invoice only follows the data. Until that list reaches you, leave the drive switched off.