Resources · Recovery Guides

Data recovery guides.

Hands-on, device-by-device guidance on the right moves — and the wrong ones — from the moment storage begins to fail. Drawn from more than twenty-five years of in-house recovery, because that very first decision often settles whether your data returns at all.

Written by our engineers
Over 25 years in Belfast
HDD, SSD, RAID & more
// the golden rule

If in doubt, switch it off.

More data is lost in the minutes after a failure than in the failure itself — simply by pressing on. The rules that follow hold for every device on this page.

Power off
at the first odd noise
Don't
run software on a dying drive
Never
open the drive yourself
Label
RAID / NAS disks in order
// first five minutes

Your drive just failed. Do this first.

No matter the device, these five steps safeguard both your data and the odds of getting all of it back. Run through them before attempting anything else.

01

Stop using it

Each new photo, saved file or opened program can write over data that's still salvageable. Set the device aside.

02

Power it down

Clicking, beeping, or refusing to spin? Power it down immediately. Every restart of a failing drive can turn the damage permanent.

03

Don't run software

Point recovery or "repair" software at a physically failing drive and it keeps the disk spinning while pounding the weak spots — the usual result is a recoverable drive becoming an unrecoverable one.

04

Don't open it or DIY

Skip the freezer trick, leave the casing shut, and don't swap circuit boards. These old myths do real, frequently permanent harm.

05

Get a free diagnostic

Bring it in or send it to us by fully insured post. Before any billable work starts, we'll tell you precisely what can be recovered and what it will cost.

// jump to a guide

Guides by device.

Choose whatever you're dealing with below for its warning signs, its dos and don'ts, and how recovery actually works on that media.

// hard-drive recovery

Hard drive recovery guide.

There are two quite distinct ways a spinning hard drive fails. Logical ones — deletion, formatting or corruption — leave the mechanism working and tend to be the safest to reverse. Physical ones — crashed heads, a seized motor, dead electronics — call for bench work, and a wrong first move can be fatal. Working out which you're dealing with is more than half the battle.

!Warning signs
  • Clicking, beeping or grinding sounds when it powers up
  • It won't spin up at all, or spins briefly then stalls
  • It drops out of the BIOS, or disappears while you're using it
  • Painfully slow, freezing for ages when you open files
  • A SMART alert when the machine starts
Do this
  • If it's still readable, copy your most important files off first
  • The instant you hear anything odd, stop using it
  • Write down what actually happened — a drop, a power cut, or no warning at all
  • Leave it cool, motionless and unplugged until someone examines it
Avoid this
  • Repeatedly powering a clicking or dead drive off and on
  • Turning repair or recovery software loose on a failing disk
  • Cracking open the casing or changing the board yourself
  • The "freezer trick", or giving the drive a whack

Hard-drive recovery happens on our own bench — sourcing matched donor heads and parts, imaging failing drives sector by sector, and rebuilding broken file systems.

More on hard drive recovery →
// ssd & nvme recovery

SSD & NVMe recovery guide.

With no moving parts, solid-state drives never click or grind — they fail abruptly and without warning instead. The usual causes are controller lock-ups, firmware faults and outright "sudden death". Two things set SSDs apart from hard drives, and both count: TRIM, which wipes deleted data for good within minutes, and flash's habit of slowly bleeding away its charge when left unpowered.

!Warning signs
  • It disappears from the BIOS, frequently overnight
  • It shows the wrong size, or reads as 0 bytes
  • It goes read-only, or crawls to a halt and then vanishes
  • It failed during a firmware update, or right after one
Do this
  • Stop writing anything to the drive at once
  • Deleted something by accident? Shut down quickly — TRIM acts within minutes
  • Storing an SSD for the long haul? Power it on every so often
Avoid this
  • Keeping on with the PC after a deletion (TRIM erases fast)
  • Running "secure erase", repair or optimisation utilities
  • Assuming that deleted still means recoverable on an SSD
The TRIM catch: on most SSDs, once a file is deleted the drive begins wiping those flash cells within minutes, whether you reboot or not. If you've deleted something important, shut down immediately and don't write anything new.

Our engineers go in at controller level on dead SSDs — reading the NAND directly in technical mode and rebuilding the drive's translator tables to bring the data back.

More on SSD & NVMe recovery →
// external drive recovery

External hard drive recovery guide.

Inside its case, an external drive is just an ordinary hard drive or SSD — so it can fail in all the same ways, plus two that are its own: the small USB-to-SATA bridge board wiring it up, and the hardware encryption a lot of enclosures apply without being asked. That encryption is exactly why shucking the drive and reading it straight usually yields nothing but scrambled data.

!Warning signs
  • It shows up on no computer, cable or port
  • Windows or macOS asks you to format it
  • It clicks, or stops mounting, after a knock or a drop
  • The light's on but nothing appears on the computer
Do this
  • Start with a different cable and a different port — it rules out the most basic cause
  • Dropped, or clicking? Stop there and send it straight to us
  • Bear in mind that a lot of externals encrypt at the bridge
Avoid this
  • Plugging a clicking or dropped drive back in over and over
  • "Shucking" an encrypted drive to read it directly — all you'll get is ciphertext
  • Formatting it just because you're prompted to

On our own bench we work around failed bridge boards, decrypt bridge-encrypted volumes, and handle head and motor repairs on dropped units.

More on external drive recovery →
// usb stick recovery

USB flash drive recovery guide.

A USB stick is little more than flash memory sitting on a tiny controller chip. The good news is that when one dies, it's normally the controller or a broken connector at fault, while the memory holding your files lives on. The catch: the controller scrambles that data, so retrieving it is specialist work — well beyond any "repair" utility.

!Warning signs
  • It's not recognised, or shows no light whatsoever
  • It insists on a format before it will open
  • The connector is bent, loose or snapped clean off
  • It connects, then drops out unpredictably
Do this
  • At the first sign of trouble, stop using it
  • If the connector has broken off, hang on to both parts
  • Jot down what was kept on it
Avoid this
  • Wiggling or forcing a loose connector — it cracks the board
  • Reformatting it
  • Relying on a "USB repair" tool that writes to the drive

We read the memory chip itself — lifting it off, or reaching a monolithic stick's internal test pads — and reconstruct your files straight from the raw flash.

More on USB stick recovery →
// memory card recovery

SD & memory card recovery guide.

Two things corrupt memory cards more than anything else: being yanked out (or the camera cutting out) mid-write, and an accidental in-camera format. Either way the photos and video nearly always survive — it's the index pointing to them that breaks. The key is not to overwrite them before they can be pulled back.

!Warning signs
  • The camera flashes 'card error', or prompts you to format the card
  • Files read as 0 bytes, or the card appears empty
  • It refuses to mount on a computer
  • It's locked read-only, or write-protected
Do this
  • Stop shooting at once — every new frame can overwrite a lost one
  • Formatted it by accident? Don't put the card back into use
  • Slide the lock tab to read-only to protect it
Avoid this
  • Continuing to shoot on the card
  • Formatting it just because the prompt appears
  • Letting the camera try to "repair" or rebuild it

We take an image of the card, carve the photos and video out by their file signatures, and then rebuild the folder structure — across SD, microSD, CF and XQD.

More on memory card recovery →
// mac & macbook recovery

Mac & MacBook recovery guide.

Recovery on a modern Mac runs into two obstacles. The first is APFS, Apple's file system, which a failed update can leave in a broken state. Second comes the T2 or Apple-silicon security chip, encrypting the storage that's usually soldered straight to the logic board. Between them, your data exists in readable form only while that board still works — and only if you hold the key.

!Warning signs
  • A flashing question-mark folder when it starts
  • It refuses to start following a macOS update
  • Something liquid got spilled on it
  • It's stuck demanding your FileVault password or key
Do this
  • Guard your FileVault recovery key — without it, nobody can unlock the encrypted data
  • Power off a liquid-damaged Mac immediately
  • Record your macOS version and exactly what happened
Avoid this
  • Leaving a liquid-damaged board powered — corrosion only spreads
  • Reinstalling macOS on top of your data
  • Assuming the soldered-in SSD is fine simply because the rest of the Mac has failed

We do the chip-level work to image encrypted Mac storage, repair damaged APFS containers, and open FileVault volumes using your key.

More on Mac & MacBook recovery →
// laptop & pc recovery

Laptop & PC recovery guide.

When a Windows laptop or PC won't start, your files are usually intact — the real question is whether the drive is dying or it's merely the operating system that's broken. Those two demand entirely different handling, and mistaking a failing drive for a software hiccup is precisely how recoverable data disappears.

!Warning signs
  • It won't boot, or throws a blue screen before Windows loads
  • It freezes again and again, then won't boot at all
  • A SMART warning shows up at startup
  • A hard drive starts clicking, or an SSD has just disappeared
Do this
  • If the fault is in the OS, your files are recoverable — have the drive imaged
  • Seeing a SMART warning? Back up right away and replace the drive
  • Work out whether you've got a hard drive or an SSD — it changes the whole approach
Avoid this
  • Running chkdsk or repair tools on a drive that's physically failing
  • Reinstalling Windows before you've recovered your data
  • Restarting a drive that's clicking

We image the drive and recover from both dying mechanical hard drives and dead SSDs — Dell, HP, Lenovo, whatever the make.

More on laptop & PC recovery →
// raid & nas recovery

RAID & NAS recovery guide.

RAID arrays and NAS boxes buy you redundancy — the ability to ride out one disk dying — but they are not a backup. The trouble begins when a second disk goes, or a rebuild lands on one that's already weak. The most damaging move of all is allowing the array to rebuild or re-initialise onto a dying disk, which can wipe out the very data you set out to save.

!Warning signs
  • The array reads as degraded, or has gone offline
  • A Synology or QNAP flags 'volume crashed'
  • A rebuild has failed, or the controller is dead
  • Two or more of the disks have failed
Do this
  • Stop — don't allow it to rebuild or re-initialise
  • Pull the disks and mark each one with its bay position (1, 2, 3...)
  • Send every disk, the already-failed ones included
Avoid this
  • Rebuilding onto a disk that's suspect or failing
  • Resetting or re-initialising the NAS unit
  • Reordering the disks, or forcing the array back online
What to send: just the drives, not the enclosure or controller. Take them out yourself and label each one with its slot number — that order is what lets us rebuild the array correctly. Our NAS recovery page covers the popular Synology and QNAP units in more detail.

We copy each disk read-only, work out the array's stripe, parity and disk order in software, then mend the file system sitting on top — whatever the vendor.

More on RAID recovery →
// before it happens

Protect your data: best practice.

The least expensive recovery is the one that never happens. A handful of habits keep your data safe long before anything breaks.

01

Follow the 3-2-1 rule

For anything you can't afford to lose, keep three copies across two different kinds of media, with one held off-site or in the cloud. A single drive is never a backup.

02

Test your backups

A backup you've never restored from isn't really a backup — it's wishful thinking. Now and then, actually open a file off it and confirm it works.

03

Act on early warnings

Odd noises, recurring freezes, files that refuse to open, SMART alerts — these are a drive calling for help. Back it up and swap it out before it fails for good.

04

Mind your SSDs

Because TRIM clears deleted data off an SSD within minutes, move quickly if you delete something by accident. And never let one sit unpowered for months as your sole copy — flash gradually loses its charge.

05

Handle drives gently

Impacts, heat, liquids and static are all drive-killers. Keep yours cushioned, cool and dry, shut it down before you move it, and earth yourself before handling bare boards.

06

Protect against power

A surge protector — better still, a UPS for desktops and NAS units — defends against the spikes and abrupt cuts that corrupt file systems and burn out circuit boards.

// don't believe it

Recovery myths, busted.

The web is awash with "quick fixes" that do more damage than good. These are the ones we watch wreck the most drives.

"Put the failed drive in the freezer."
An old trick that now does far more harm than good — condensation and thermal shock damage the platters and electronics. Keep the drive at room temperature and send it in.
"Recovery software always gets it back."
Software only helps with logical problems on a healthy drive. On a physically failing one it keeps the drive powered and makes things worse. If the drive sounds or behaves wrong, stop.
"A clicking drive just needs a tap."
Clicking is the heads failing, and every spin scrapes the platters a little more. Tapping or shaking it only speeds up the damage. Power it off and leave it alone.
"Deleted files are gone forever."
On a hard drive, deleted data usually survives until it's overwritten — so stop using the drive. On an SSD, TRIM can wipe it within minutes, so act immediately.
"I've got RAID, so I'm backed up."
RAID protects against a disk failing, not against deletion, corruption, ransomware or a failed rebuild. It's redundancy, not a backup — you still need a separate copy.
"Reinstalling Windows or macOS is safe."
A reinstall writes over the very areas your lost files live in. If the data matters, recover it first — then reinstall.
// when you're ready

Not sure what you're dealing with? Let us look.

Every recovery opens with a free written diagnosis. You'll know what can be saved and what it will cost before any billable work begins — and on most jobs, no fix means no fee.

Drop off at Forsyth House, Cromac Square, Belfast, BT2 8LA · or post insured · Mon–Fri 9am–5:30pm
Call us — 028 9002 0144
Mon–Fri · 9am–5:30pm · No fix, no fee
Start a free diagnostic →
028 9002 0144