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SDR / Manufacturers / Kioxia / Toshiba

Exceria · BG4, BG5, BG6 · XG6, XG7, XG8 · KBG40, KBG50 · Toshiba Q300

Kioxia / Toshiba SSD data recovery. Toshiba's memory business, under a new name since 2019.

Kioxia is Toshiba Memory renamed in 2019, and it also absorbed OCZ's SSD assets when Toshiba bought them in 2013. Its BG and XG OEM drives sit in a great many business laptops under part numbers beginning KBG or KXG, with no retail badge, and the Exceria lines are its retail face. The BG drives are small, DRAM-less, 2230 or soldered BGA packages, which fail mostly as controllers; the XG drives are full 2280 sticks. Kioxia's controllers are its own on its own BiCS flash, so recovery runs through the original controller. No specific firmware fault was documented for these drives in our research. One Kioxia or Toshiba SSD is £300 + VAT after the free look, fixed in writing, 3–5 days at the bench.

Free first lookOne fixed figure in writingNo data, no bill on most jobsReturn postage paid

Rather talk it through? An engineer answers the bench line
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Models we see, family by family.

Which kind of drive is it →
Family Models Controller commonly reported
OEM NVMeBG4 (KBG40), BG5 (KBG50), BG6 (KBG60); XG5, XG6 (KXG60), XG7 (KXG70), XG8 (KXG80)Kioxia in-house, DRAM-less on BG
RetailExceria (SATA and NVMe), Exceria Plus, Exceria Plus G2, Exceria Pro, Exceria G2Kioxia in-house; some third-party
Toshiba and OCZ heritageToshiba Q300, Q300 Pro, TR200, RC100, RD500; OCZ Trion, Vector, VX500, RD400Toshiba in-house · Phison (Trion) · Marvell (Vector)
EnterpriseCD6, CD7, CD8, CM6, CM7 (NVMe); PM6, PM7 (SAS); KCD and KCM part numbersKioxia

What tends to go wrong on a Kioxia / Toshiba.

BG drives soldered as BGASome BG4, BG5 and BG6 parts are soldered to the laptop board as a single package rather than fitted as a 2230 stick. Those are board work, and usually readable once the board is powered or the package is read directly, with BitLocker unlocked on the image.
The 2230 drives in Surface and thin laptopsA removable BG4 or BG5 under a magnetic cover in many Surface models and thin Windows laptops. Ordinary NVMe work; the drive comes out and the machine stays.
General pattern: in-house, DRAM-lessNo specific Kioxia or Toshiba SSD firmware fault was verified in our research. The pattern is the DRAM-less in-house one: a controller that has stopped in front of intact flash, in a machine that has usually had BitLocker on.

Kioxia / Toshiba symptoms, and how long each gives you.

Not listed? Describe it on the form →
It is not in the BIOS at allThe controller did not finish starting. The flash is almost always sound.Do not delay
It shows the wrong size, or a strange nameFallback firmware; the map is not loaded.Do not delay
It has gone read-onlySpare blocks exhausted, or a documented firmware fault. Readable.Everyday job
Slow, with files that will not copyWeak pages being retried. Image it now.Everyday job
Deleted, or formattedTRIM is at work. Shut down and leave it off.Do not delay
Packing it and posting it: a bare SSD travels in an anti-static bag inside a small padded box, with nothing able to move. Insure it for what the files are worth rather than the price of the drive, and use a tracked service. The posting address is not printed anywhere on this site; it arrives by email in reply to the form, with a booking sheet to print; the sheet inside the parcel is what matches it to your enquiry when it is opened. Or hand the sealed parcel in at the nearest of ten drop-off points, your name on the outside and the sheet inside; say where you are on the form and it comes by email. We pay the postage home either way. The whole of it is written up on the guide to packing and posting.

What the message means on a Kioxia / Toshiba.

Describe yours to us →
What you see The usual reason Where that leaves you
A laptop drive labelled KBG40ZNS… or KXG60…A Kioxia OEM partRecovered as Kioxia; tell us the laptop
A BG package soldered to the boardBGA storageBoard work; see soldered SSDs
Not in the BIOS, or at the wrong sizeFirmware or controller fault with the flash intactRecovered through the original controller
Read-onlyFirmware protecting worn flash, or a documented firmware faultUsually fully readable
Health falling fast in the maker's toolReal wear, or a reporting faultBack up now; a warning, not yet a recovery
Dead after a firmware updateThe write stopped half-wayLoader in RAM; map from the service area

From the box arriving to your files going back.

Work we have closed →
01

Logged the day it lands, and the first look costs nothing Free

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.

Nothing to pay for lookingA single figure, put in writingNo TRIM, no writes
02

Powered on our terms

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.

Vendor diagnostic modeNo hopeful reboots
03

Past the fault, to the map

Working code is loaded into the controller's memory rather than onto the flash, the service area is read, and the translation table is rebuilt from what is there. Where the controller itself is dead, the chips are read one by one and the controller's scrambling and error correction are undone in software.

Loader in RAM, never on the flashMapping tables put back together
04

A full image, then the volume

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.

One careful imageThe volume verified end to end
05

You see the file list before you pay

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.

No charge until you accept the figureFresh media, supplied with the job3–5 days at the bench

From the bench

  • The KBG and KXG part numbers tell us the family. A bare stick with no badge is still identifiable.
  • The BG drives are DRAM-less, so their map lives on the flash and is more exposed to a bad shutdown.
  • Enterprise CD and CM drives are recovered as part of their array. Send every member, labelled.
  • In-house controllers encrypt in hardware, whether or not you ever set a password. The flash read on its own is ciphertext, so recovery runs through the original controller, which usually can be revived.
  • There is no third-party routine to borrow. The maker's own diagnostic state is the way in, and the bench knows it family by family.
  • Do not run the maker's tool on a drive already misbehaving. Its firmware update and its optimisation both write to the drive.

One job, followed all the way through.

UK · SDR-2026-0401JOB LOGGED ✓

A Surface Laptop 4 with a dead board, a healthy BG4 inside, and BitLocker on

The laptop died; the 2230 NVMe drive inside was healthy. BitLocker had been on from the day the machine was set up, as it is on most Surfaces, and the owner did not know it. The recovery key was where Windows had put it, in the Microsoft account under Devices. The drive was imaged whole, the volume unlocked on the image with the key, and everything came back.

100% of it recovered3 days here, and back by post
Illustrative example — replace with a genuine case

What helps, and what harms.

Do this much first

  • Power it off and leave it off
  • Note the firmware version if the maker's tool still shows it
  • Tell us whether BitLocker or FileVault was on
  • Send the bare drive

What sets us back

  • Running Secure Erase, optimisation or a firmware update
  • Letting Windows initialise it
  • Putting it in a USB enclosure to test
  • Sending it to a shop for a controller swap — it does not work that way

Questions answered before you commit.

Is Kioxia the same as Toshiba?

Yes. Toshiba Memory was renamed Kioxia in 2019. Older drives say Toshiba, newer ones Kioxia, and the OCZ drives Toshiba bought in 2013 are part of the same family.

My laptop drive is soldered. What then?

Some BG parts are soldered as a single package. Those are board work: the board is powered or the package is read directly, and BitLocker is unlocked on the image. See the soldered SSD page.

Do I need my BitLocker key?

Almost certainly, for a drive out of a business laptop or a Surface. The key is in the Microsoft account or with your employer.

What does it cost?

£300 + VAT for one drive after the free look, fixed in writing.

How long does it take?

3–5 days at the bench after the free look.

Begin here if yours is doing the same thing.

Soldered SSDs →Microsoft Surface and OEM drives →OCZ, the legacy line →U.2 and U.3 enterprise NVMe →SAS SSDs →

Nothing gets worse while the power is off.

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.

0800 6890668

Price my jobPacking and posting