Recovering data from an external hard drive is very doable — if you go about it in the right order. Rush in with the wrong tool and you can turn a simple fix into a lost drive; work through it methodically and you’ll either get the files back yourself or know exactly when to hand it over. Here’s the step-by-step, from the first safe check to the point a lab takes over.
Step one is to stop and work out whether the fault is logical or physical. Everything after that follows from the answer — software for a working drive, a lab for a failed one. The wrong order is what loses data.
Everything hinges on this. A logical fault means the drive still works — it powers up, is recognised, spins quietly — but the files are missing, the drive shows as RAW, or it asks to be formatted. A physical fault means the hardware has failed: the drive clicks or beeps, won’t spin, isn’t detected at all, or was dropped or got wet. The two need opposite approaches, so listen and look before you act. If the drive is making any unusual noise, treat it as physical and skip straight to the lab section — don’t run software on it.
If the drive is physically healthy and the problem is logical, you can often recover it yourself. First, the simple checks: try a different cable, port and computer, and open Disk Management (Windows) or Disk Utility (Mac) — if the drive shows there with no drive letter, just assigning one can bring it straight back. If it shows as RAW or unallocated, don’t format or initialise it; that’s recoverable partition damage. For deleted files or a corrupt file system, recovery software will scan the drive and restore files — to a separate destination drive. If you’re weighing it up, our guide on software versus a professional lays out when each makes sense.
If the drive is clicking, silent, undetected, or has been dropped or flooded, no software can help — the hardware needs repair before the data can be read, and every extra power-on risks making it worse. This is the point to stop and send it in. In a controlled environment, the drive is repaired just enough to read — failed heads or a dead board fixed with matched donor parts — then imaged read-only, so your files are rebuilt from a copy and the original is never stressed further. It’s the same careful process as recovering any failed drive that won’t show up, and a single external drive is from £300 +VAT.
One thing unique to external drives: the enclosure. For most, the drive inside is a standard disk, and if you’re sending it for recovery you can take the drive out and send just the drive. The exception is encrypted models — many external drives encrypt data in the enclosure’s bridge chip, so the bare drive would be unreadable on its own. If yours is (or might be) encrypted, send the whole unit so the data can be decrypted in its original hardware. If you’re unsure, sending the complete drive is always the safe choice, and we’ll do the rest.
Work in order. First stop using it and never recover files back onto it. Then decide if the fault is logical (the drive works but files are missing) or physical (it clicks, is silent, or is undetected). Logical faults can often be fixed with recovery software, recovering to a separate drive; physical faults need a lab. The wrong order is what loses data.
That is usually a logical fault. Try a different cable, port and computer, then check Disk Management or Disk Utility, if the drive shows with no letter, assigning one may fix it. If it shows as RAW or asks to be formatted, do not format it; that is recoverable partition damage. For deleted or missing files, recovery software can restore them to a separate drive.
Not with software, that is a physical fault, and running a scan can make it worse. A clicking, silent or undetected drive needs repair on the bench before it can be read, then read-only imaging. Power it down and send it in rather than retrying it; a single external drive is from 300 pounds plus VAT after a free diagnostic.
For most drives you can take the disk out and send just the drive. The exception is encrypted models, where the enclosure bridge handles the encryption and the bare disk would be unreadable, so send the whole unit. If you are unsure whether yours is encrypted, sending the complete drive is always the safe choice.
Yes, if the drive is physically healthy and the loss is logical, provided you recover to a different drive and never write to the affected one. It is not safe on a failing drive, where a long scan adds wear and risks permanent loss. If the drive is noisy or undetected, stop and get it diagnosed instead.
If the drive is clicking, silent or undetected, don’t keep trying. Send it in and we’ll recover it read-only and tell you what’s there — free diagnostic, fixed quote first.