Data Recovery Case File · Second Fixes & Trade Handoffs · Sourcing Is Part of the Work
The Limiting Factor Was Not the Diagnosis but the Part
Her enquiry arrives with a detailed prior assessment and a specific obstacle. A 6TB drive examined elsewhere, reported as having damaged heads resting on the parking ramp with damage to the platters and debris present, requiring cleaning and a donor head assembly — and "we do not have this model in our donor collection, and I was unable to find a suitable one." That is an honest account of a real constraint, and it is worth being precise about which parts of it are settled.
| Media | 6TB desktop hard drive — prior assessment reporting damaged heads parked on the ramp, platter damage and debris; matching donor assembly not sourced by the previous provider |
| Reported situation | External assessment reporting damaged head assembly · heads found parked on the ramp · damage to platter surfaces reported · debris present · platter cleaning indicated · donor head assembly required · previous provider unable to source a matching donor · owner enquiring as to donor availability and lead time |
| Fault class | Head assembly failure with reported surface damage and contamination — recovery scope governed by extent of surface damage; donor availability a separate practical constraint |
| Equipment used | Prior findings confirmed independently before donor sourcing was committed to · donor compatibility established by matching family and firmware revision rather than model alone · laminar flow bench inspection with head and platter assessment · surfaces cleaned and contamination addressed before any spin attempt · imaging scoped to unaffected surfaces and regions |
The decode: what the report tells us, and what donor matching actually requires
What the finding about parked heads means: the heads were found on the ramp at the edge of the platters rather than resting on the recording surface. That is where they are supposed to be at rest — so the drive parked correctly, and the heads were damaged without having come to rest on the data.
Why that detail is worth more than it might appear: heads parked correctly means the drive was not left in the worst configuration. It also means the reported surface damage happened while running rather than at the moment it stopped, which is consistent with contact during operation.
What the debris finding implies: material has come off somewhere. Debris circulating inside a sealed assembly is dragged across surfaces by rotation, which is why cleaning is specified before anything else — spinning a contaminated drive extends the damage.
Why the platter damage is the part that genuinely limits the outcome: data in a scored region is physically gone. No head, however well matched, reads a surface where the recording layer has been removed — so the honest expectation is partial rather than complete recovery, with the extent depending on where the damage sits.
Why that is still worth pursuing: damage is usually confined to bands rather than whole surfaces, and drives of that capacity have several platters with two surfaces each. Material on unaffected surfaces and outside the damaged bands is frequently substantial.
What donor matching actually requires, since that is her question: not simply the same model number. Heads are matched by drive family, capacity configuration and often firmware revision, because head characteristics and the calibration expected by the drive vary between production runs of the same nominal model.
Why a donor search can fail: a particular family and revision may be uncommon, may have been sold in small numbers, or may be old enough that working examples are scarce. It is a sourcing problem rather than a technical one, and it is genuinely the thing that stops some jobs.
Why the answer on availability is a real question rather than a formality: donor stock differs between providers, and one being unable to find a match does not mean none exists. It does mean lead time is a legitimate part of the answer rather than something to be promised vaguely.
Why the prior findings are confirmed rather than assumed: the report is specific and plausible, and it commits the work to opening the drive and consuming a donor. Independent confirmation comes before parts are sourced, not after.
What must not happen meanwhile: no powering the drive. With debris present and surfaces already damaged, every rotation extends the affected area.
On the bench
Prior findings were confirmed independently before donor sourcing was committed to — heads found parked on the ramp indicating correct parking and damage sustained during operation rather than at rest, with debris circulating inside the assembly being dragged across surfaces by rotation, so cleaning precedes any spin attempt. Donor compatibility was established by matching family and firmware revision rather than model alone, head characteristics and expected calibration varying between production runs. Imaging was scoped to unaffected surfaces and regions.
The outcome
The prior findings confirmed independently, donor compatibility established by family and revision, and imaging scoped to unaffected surfaces. 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. The decode: heads found parked on the ramp is the good part of that report — the drive parked correctly. What limits the outcome is the surface damage, since a scored region is physically gone, and donor matching needs family and firmware revision rather than model alone.
When a lab cannot source a donor for your drive
Treat it as a sourcing constraint rather than a verdict, since donor stock differs between providers and one search failing doesn't mean no match exists — but do expect lead time to be a real part of any answer. Understand what matching involves: not simply the same model number, but the same drive family and often the same firmware revision, because head characteristics and expected calibration vary between production runs. If surface damage and debris were also reported, set expectations towards partial recovery, since a scored region is physically gone. Keep the drive unpowered — with debris inside, every rotation spreads it.
Worth a second search — call Easy Data Recovery on 028 9002 0144; prior findings confirmed independently before parts are committed, donor matched by family and firmware revision, imaging scoped to unaffected surfaces.
Request a quote online →
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.