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Resources · Recovery Guides

Recovery guides, by device and by symptom.

Step-by-step help for each specific device as soon as it fails so you know exactly what to do, and exactly what not to do.

Written by our engineers
since 2002 in Oxford
HDD, SSD, RAID & more
// the golden rule

In doubt? Cut the power.

The real damage happens during the ‘aftermath’ of a drive failure; continuing to use your computer results in the loss of more data than was actually lost when the drive failed. Stop immediately; this will likely be the best decision you make.

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
// start here

Something just failed. Read this first.

Regardless of which drive(s) you have and the type of failures they are experiencing, there are four universal steps you should take. Of these, number one is going to matter significantly more than all the rest combined.

01

If it makes a noise, switch it off now

Any time a hard disk makes a clicking/grinding/buzzing/beeping noise it indicates its internal mechanical parts (the motor or actuator) are failing and with every second it runs under power it will continue to deteriorate even further. In general, how long a drive continued to run after the initial failure symptom is directly related to how much data recovery will ultimately be possible.

✓
02

If it still reads, copy what matters

If a drive is running slowly and/or has errors, then technically speaking it is still usable until it simply stops working completely at any moment. Always copy files from a slow/erroneous drive to another physical drive in order of importance (by value), knowing that some files may never recover.

✓
03

Decline every offer to format, initialise or repair

All three (Windows, macOS and cameras) have this feature and will overwrite any structures that are used by a recovery of lost information. Just because the prompt appears doesn’t mean you’ve lost anything.

✓
04

Never install recovery software onto the affected drive

When an installation is done, the installer writes over the place where your deleted file was stored. You should install to a separate drive and attempt to recover to a separate drive, or just don’t do either.

✓
// by device

Guides for whatever you are holding.

Each provides the most common issues with a particular piece of hardware, safe tests you can perform to diagnose the problem, as well as when you need to stop trying.

// by symptom

Or start from what it is doing.

Sometimes it’s what you see on the computer screen that will ultimately matter most, regardless of what the actual unit is.

// software or a lab

When you don’t need us.

Read this first before giving any money (to us or others).

Logical errors are what recovery programs fix, such as accidentally deleting files from your hard drive, formatting your partition by accident, etc., if your physical media is good and you install the program elsewhere. If you have a noisy or malfunctioning hard disk, doing a scan could add hours of unnecessary stress to the already stressed device and in many cases will kill the hard drive while attempting to recover the data.

The complete decision process is outlined in software or a lab: four questions, and the extent to which free tiers of recovery software apply is outlined in free recovery software. We will let you know if your specific circumstance calls for software rather than accepting your request, and our published prices allow you to confirm a quote from any person rather than simply trusting it.

// four myths

Advice that keeps circulating.

All four continue to be found in forum threads; and all four are harmful.

01

“Put it in the freezer”

Condensation forms on the platters when the drive warms back up to room temperature, and moisture at the location of the flying heads is detrimental. The trick was never reliable and will make a professional recovery more difficult.

✓
02

“Swap the board from an identical drive”

Modern drive boards have an adaptive calibration ROM (read-only memory) chip. This chip contains the calibration data for this specific hard disk. Without the correct calibration data in the ROM chip, a donor board will do nothing or, alternatively, apply incorrect calibration settings to the heads.

✓
03

“Run chkdsk first”

chkdsk makes sure your file system is in sync, not your files. It deletes or cuts off anything that can’t be made to match up. If you are using the /r option, it will read every sector of a disk which is probably at its breaking point.

✓
04

“Rice fixes water damage”

When you dry something out you concentrate all the minerals and salts from what was once water onto one place...the thing you’re drying. Minerals and salts cause rust/corrosion, not the water itself. Send it to us damp and sealed instead, and quickly.

✓
// when you're ready

Not sure what you've got? Let us take a look.

All recoveries begin with a complimentary, written diagnosis. Before you pay anything, we will let you know what we can recover and how much it will cost, and in most cases you only pay if we recover your data.

Get a quote first, then drop off at John Eccles House, Oxford Science Park, Robert Robinson Avenue, Littlemore, Oxford, OX4 4GP · or post insured · Mon–Fri 9am–5:30pm