Data Recovery Case File · Second Fixes & Trade Handoffs · A Good Question, the Wrong Method
He Was Checking Something Real and It Could Have Been Heard
His enquiry lists thorough work and one step too far. A 3TB drive that has failed: "I have tried all of the options at my disposal — fitting into another PC, using a dock, and even having a quick look inside to see if the read heads had missed their dock." He has also supplied an empty drive for the recovered data. The thing he opened it to check is a genuine failure mode — and it is one that can be established from the outside, which makes the look the only avoidable part of an otherwise sensible sequence.
| Media | 3TB desktop hard drive — assembly opened by the owner to inspect head parking position; destination drive supplied |
| Reported situation | Drive failed and not accessible · fitted to an alternative machine without result · connected through a dock without result · assembly opened briefly by the owner to inspect head position · empty destination drive supplied by the owner |
| Fault class | Undetermined original fault with ambient exposure introduced — head parking position to be established alongside; contamination assumed |
| Equipment used | Full account of the opening obtained before assessment · drive handled as contaminated throughout · laminar flow bench inspection with surface and particulate assessment before any spin attempt · head parking position established under magnification · matched donor parts as indicated · recovered content written to the supplied destination |
The decode: what he was looking for, and how it is normally found
What "missing the dock" actually means: on a modern drive the heads park on a plastic ramp at the edge of the platter when it spins down, lifting them clear of the surface entirely. If that does not happen — a sudden power loss, a knock during shutdown, a mechanical fault — the heads come to rest on the platter instead. They can then adhere to it, and the motor cannot break them free on the next start-up. It is a real, common and specific failure, and he was right to think of it.
How it is established without opening anything: by sound and behaviour. A drive whose heads are stuck on the surface produces a characteristic repeating tone as the motor strains against a stack that will not turn, usually giving up after a few seconds. A drive that spins freely does not have heads stuck to a platter, because it could not be turning if it did. Feeling for rotation through the case, and listening for whether the motor settles or labours, answers the question he opened the drive to answer.
Why the look cost something regardless of what it showed: a drive's heads fly above the platter at a height smaller than a smoke particle, which is why the assembly is sealed. Opening it in room air admits dust and fibres that are enormous at that scale, and anything settling on a surface will be struck the moment the drive turns. The exposure happens on opening, not on touching anything.
Why saying so is the valuable part of his enquiry: a drive known to have been opened is handled as contaminated from the outset — inspected for particulate before any attempt at rotation, and never casually spun. A drive opened and not disclosed gets discovered anyway, because contamination is visible, but discovered after decisions were made on wrong assumptions.
Three things worth stating, none of which invite criticism: whether it was powered while open, which is the most damaging possibility and produces distinctive surface damage. Whether the heads were moved by hand, which scores the platter where it happened. And roughly how long it stood open and in what environment.
Why supplying a destination drive is genuinely helpful: recovered content has to go somewhere, and an empty drive of matching capacity provided upfront removes a step and a cost.
On the bench
A full account of the opening was obtained before assessment — specifically whether the drive was powered while open, whether heads had been moved by hand, and how long it stood exposed. The drive was handled as contaminated throughout. Inspection ran under the laminar flow bench with surface and particulate assessment before any spin attempt, and head parking position established under magnification — the question the owner opened it to answer, which is also determinable acoustically from outside. Recovered content was written to the supplied destination.
The outcome
The handling history established, the drive treated as contaminated and inspected before any rotation, with content written to the drive supplied. Free assessment, one fixed written figure including VAT, 50% of parts and labour upfront with the balance only on successful recovery. The decode: heads failing to park on their ramp is a real failure and you were right to suspect it. It can be established from outside — a drive with heads stuck to a platter cannot spin, so feeling for rotation and listening for whether the motor settles or labours answers it without opening anything.
Wondering whether your drive's heads have parked
You can answer that without opening it. On a modern drive the heads park on a ramp at the edge of the platter when it spins down, lifting clear of the surface — and if a power loss or a knock prevents that, they come to rest on the platter and can stick, which is a real and common failure. But a drive with heads stuck to a surface cannot turn, so feeling for rotation through the case tells you directly. Listen for whether the motor settles into a steady tone or labours and gives up after a few seconds. If you have already opened one, say so plainly and mention whether it was powered while open and whether anything was moved by hand — that changes how it's handled and nobody will be cross.
Say so — call Guildford Data Recovery on 01483 901310; full handling account taken first, treated as contaminated, inspected with particulate assessment before any spin attempt.
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Our case files are drawn from genuine enquiries received by our laboratory over the past ten years, anonymised to protect client confidentiality. Each one describes the diagnostic and recovery procedure our engineers apply to that fault, using the equipment listed.