Data Recovery Case File · Trust, Practice & Honest Limits · What Should Have Been Agreed
Each Invasive Step Is a Decision, and It Is the Owner's to Make
His enquiry describes work carried out on his drive without his knowledge. A drive sent abroad for recovery, where the provider "performed four head replacements without informing me, only recovering twelve per cent of the data, and continuously damaging the drive." Whether or not four attempts were technically defensible, each one was a decision he was entitled to make — and the honest position now has to start with what that sequence is likely to have left.
| Media | 1TB external hard drive — subject to four successive head assembly replacements by a previous provider; approximately 12% of content recovered; further degradation reported |
| Reported situation | Drive sent to a recovery provider · four successive head assembly replacements performed · owner not informed of the attempts at the time · approximately 12% of content returned · further damage to the drive reported · owner seeking assessment of remaining prospects |
| Fault class | Head failure with cumulative surface degradation from repeated intervention — remaining prospects governed by extent of surface damage across successive attempts |
| Equipment used | Extent of prior intervention established before any assessment of prospects · surfaces inspected for cumulative damage across successive head replacements · laminar flow bench inspection with platter and contamination assessment before any spin attempt · imaging scoped to surviving surfaces and regions under capped timeouts · realistic position stated before any commitment |
The decode: what repeated attempts cost, and what should have happened
Why a head replacement is not a step that can simply be repeated: each one means opening the drive, fitting a matched assembly, and spinning the platters with new heads. If those heads are not right — wrong match, imperfect alignment, or already-damaged surfaces — they can contact the recording during the attempt, and that contact is permanent.
Why the second and subsequent attempts carry more risk than the first: they begin from a surface that has already been through one. Damage accumulates, and debris generated in one attempt circulates during the next — so the marginal chance of success falls while the marginal harm rises.
What that implies about the twelve per cent: it may represent what was recoverable early, with later attempts adding little. A recovery that reached a modest proportion and then continued is one where the additional attempts were increasingly unlikely to help, which is precisely why the decision to continue matters.
Why that decision belongs to the owner rather than the technician: it is a judgement about acceptable risk to something irreplaceable. A second attempt trades a chance of more against a chance of less, and only the person who owns the material can weigh that.
What should have been agreed in advance: that each invasive step is authorised separately, with the position reported after each. An owner told after one attempt that a second carries diminishing returns and rising risk can decide to stop — which is a decision that cannot be offered retrospectively.
Why saying this is not simply criticism of another provider: the practice matters generally. Any lab can face a case where the first attempt underperforms, and the difference lies in whether the next step is taken on the owner's instruction or on the technician's initiative.
What the honest position is now, stated plainly: prospects are poor. A drive that has been opened four times, had four assemblies fitted, and shows reported damage is unlikely to yield substantially more — and the eighty-eight per cent outstanding may sit in regions that no longer hold a readable recording.
Why an assessment is nevertheless worth doing: it establishes what remains rather than assuming. Surfaces are inspected for the extent of damage across attempts, and whether any regions holding outstanding content survive is a question with an answer.
Why the assessment should come before any hope is offered: he has already been through a process that continued past the point of usefulness. The most valuable thing available now is a clear answer about what is left, including if that answer is very little.
What should be agreed before anything else: that no invasive step is taken without his express authorisation, and that he is told the position after each stage. That is the arrangement that was missing.
On the bench
Extent of prior intervention was established before any assessment of prospects — each head replacement requiring the drive to be opened and platters spun with a fitted assembly, so successive attempts begin from progressively degraded surfaces with debris from earlier attempts circulating, causing marginal chance of success to fall while marginal harm rises. Surfaces were inspected for cumulative damage across successive replacements under the laminar flow bench before any spin attempt, with imaging scoped to surviving surfaces and regions.
The outcome
Prior intervention established first, surfaces inspected for cumulative damage, and a realistic position stated before any commitment. Free assessment, one fixed written figure including VAT, with 50% of parts and labour payable upfront where the drive is opened and the balance only on a successful recovery — and no invasive step taken without express authorisation. The decode: each of those attempts was a decision that belonged to you. Prospects now are poor, because successive attempts begin from surfaces already degraded — but what remains is a question with an answer, and you should have it before committing.
Agreeing how far a recovery may go
Ask for each invasive step to be authorised separately, with the position reported after each stage. That matters most on head replacements, because they can't simply be repeated: every attempt means opening the drive and spinning the platters with a fitted assembly, and each subsequent one begins from a surface already degraded, with debris from earlier attempts circulating. So the marginal chance of success falls while the marginal harm rises — which makes continuing a judgement about acceptable risk to something irreplaceable, and that judgement is yours rather than the technician's. It can't be offered to you retrospectively.
Get a clear position first — call Easy Data Recovery on 028 9002 0144; prior intervention established before any assessment, surfaces inspected for cumulative damage, no invasive step without express authorisation.
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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.