A hard drive that isn't recognised can mean anything from a loose cable to a failed drive — and the difference matters. If it shows in the BIOS but not in Windows, the hardware is usually fine and the fault is logical; if it's absent from the BIOS entirely, the problem is in the drive. Either way, the data is nearly always still there, and we recover it in-house.
$ bdr diagnose /dev/sda → Device: Seagate ST2000DM006 (2 TB) → Status: NOT DETECTED — service area / firmware corruption → Client: confidential · Belfast $ bdr engineer-working → Service area: firmware repaired → Drive: re-initialised · detected → Imaging: 1.82 TB / 2.00 TB (91%) $ bdr verify → ✓ documents — 64,820 files → ✓ photos — 51,300 files → ✓ drive visible again — recovered
If a drive isn't recognised, the single biggest factor in getting your data back is that nothing gets written to it. Don't let Windows initialise or format the drive, don't run chkdsk or repair tools, and don't create a new partition — each of those can overwrite the very data recovery depends on. Set it aside and talk to us first.
There's one useful test before anything else: does the drive appear in the BIOS at all? The answer splits the problem into logical or hardware — and these are the causes behind each.
We recover unrecognised drives from every major make — internal, external, and the drives inside laptops and PCs.
3.5″ and 2.5″ hard drives · external and portable drives · the drives inside laptops, PCs and Macs · and NAS and server disks.
We start by finding out where the drive fails to appear — the BIOS or Windows — because that tells us whether it's logical or hardware. Then we work from a read-only image, so nothing is ever written to your original.
We check whether the drive is seen by the BIOS, and whether the fault is logical or hardware, then send a written quote — usually within 48 hours.
Your original media is only ever read, never written: we clone it sector by sector under write-protection and carry out every repair on the clone.
For a drive absent from the BIOS, that can mean board repair, ROM transfer, firmware repair, or clean-air mechanical work — enough to read it.
For a RAW or unallocated drive, we rebuild the partition and file-system structure from the image and recover the files behind it.
Recovered files are checked to confirm they open and are intact before anything is returned to you.
Your data comes back sorted and ready to use, on fresh media.
We copy your data to an external drive and post it back, or offer a free download of up to 75GB — whichever suits you.
Whether the drive is missing from Windows, reading as RAW, or absent from the BIOS entirely, we recover unrecognised disks — internal and external — always from a read-only image, so nothing you or the computer did can put the original at further risk.
Give us the short version of what the drive is doing and we’ll reply fast — typically within half an hour during office hours.
We will get back to you soon. If it is urgent, call 028 9002 0144.
A free diagnostic first, then a fixed written quote before any work begins. Logical recoveries are charged at the standard rate; where physical repair is needed there's a 50% deposit toward parts and bench time, with the balance only on success.
A representative selection of unrecognised drives we've recovered across different makes — device types and outcomes shown, customer details kept private.
The partition had turned RAW, but the data was intact behind it. We imaged the drive read-only and rebuilt the file system, recovering the full contents.
A firmware-area fault was stopping it identifying itself. We repaired the modules, the drive came back, and it imaged cleanly.
The USB bridge in the case had failed; the drive itself was fine. We connected it directly and copied everything off at full speed.
Named, verified reviews from Belfast clients with undetected-drive jobs will appear here as they come in.
No invented reviews here. We're collecting verified, named reviews from our Belfast customers and will publish them here as they come in. In the meantime you're welcome to call and talk an issue through with an engineer on 028 9002 0144.
Post or drop in your device for a free diagnostic, with a note on what happened — an engineer reviews it and confirms your exact quote in writing before any work begins.
First step: get the device onto our Belfast bench. Wrap it well, tuck your contact details in the box, and post it over — the diagnostic costs nothing, and you’ll have a firm written price to approve before we touch a single sector.
Posting it? A tracked, insured service is best. Dropping it off instead? You’re welcome Monday–Friday, 9am–5:30pm — please still pack the device as above.
Not ready to send anything yet? Use the form to describe the fault in your own words and one of the engineers will come back with a quote tailored to your situation.
We will get back to you soon. If it is urgent, call 028 9002 0144.
The questions we're asked most about drives that aren't recognised.
Usually, yes. That pattern points to a logical fault — a drive letter, a RAW partition, a driver or a storage-mode setting — rather than a dead drive, so the data is typically still there. The one thing that changes that is writing to it, so don't let Windows format or initialise the drive first.
It points to a hardware fault — the board, the motor or the firmware — but that's not the same as the data being gone; it usually isn't. The drive needs bench-level work to read it, so stop power-cycling it and have it assessed.
Not if it holds anything you want back. A drive reading as RAW still contains your data; formatting begins overwriting it. Recover first, then format the drive afterwards if you want to reuse it.
Test another cable and USB port, then another computer. Enclosure electronics fail fairly often and are an easy win — sometimes the drive inside is perfectly healthy. If it's still invisible directly, the fault is likely in the drive itself.
One drive is £300 + VAT, diagnosed free, with no fix, no fee across most jobs. Physical repairs take a 50% deposit toward parts and bench time, the rest only on success — and it all goes in writing before we start.
A logical recovery is often done within 1 to 3 working days; a hardware repair can take a little longer. The diagnostic itself is usually finished within 48 hours, and urgent cases can normally be prioritised.
You can hand the drive in at Cromac Square any weekday between 9am and 5:30pm, or send it by insured post. Box it securely with a note of your name, contact number, email and address inside — that’s everything we need to log it, run the free diagnostic and issue your quote.
Whether it's missing from Windows or the BIOS, the data is nearly always still there — as long as nothing overwrites it. Leave it as it is and send it in. Free diagnostic, no fix no fee on most jobs.