Data Recovery Case File · Portable Drives · The Question Answered Properly
What Are the Chances on a Clicking Drive?
His enquiry did two things well and asked one question straight. A Toshiba 2TB external drive that "went defective earlier this week. Immediately stopped using it as it was creating a clicking noise." He took it to a local repair shop, who told him it needed specialist attention and passed it on rather than experimenting. And then the question everybody wants answered first: "do you give a sense of success chances, and how much can be retrieved or not?" The material is word processing, spreadsheets and presentations "from across 20 years". That question deserves a real framework rather than a percentage plucked from the air — and two things about his case shift the odds meaningfully in his favour before anyone opens anything.
| Media | Toshiba 2TB portable external hard drive — clicking on connection; use discontinued immediately; approximately twenty years of documents, spreadsheets and presentations held |
| Reported situation | Clicking developed in normal use · owner ceased use at once · local repair shop declined to intervene and referred onward · realistic prospects and expected completeness sought |
| Fault class | Head assembly failure — mechanical intervention required; completeness governed by surface condition and by how few power cycles occurred |
| Equipment used | Laminar flow bench inspection before power · matched donor head service · PC-3000 Express with Data Extractor prioritised head-mapped imaging · losses resolved per file |
The decode: the honest framework, and the two things in his favour
Why nobody can give a number in advance: and any firm that does is guessing. A clicking drive means the head assembly is failing to position itself, and the outcome depends on something nobody can see from outside: whether the heads have made contact with the platter surfaces, and if so how much area has been scored. Scored tracks are physically destroyed and unrecoverable by anyone. Until the drive is opened and the surfaces inspected, the honest position is a range rather than a figure — and the inspection is what converts it into an answer.
The first thing in his favour — he stopped. This is the single largest variable an owner controls, and it is decided in the first minutes. Every power-up on a clicking drive sends a damaged head assembly travelling across the surfaces, and where contact is occurring the damaged area grows each time. The difference between a drive connected twice and one connected fifty times over a fortnight is frequently the difference between a near-complete recovery and a substantially partial one. He stopped at the first click, which puts him in the best group.
The second — the shop referred rather than tried. A general repair shop working on a clicking drive can do real damage: repeated power cycling to reproduce the fault, imaging software that retries indefinitely, and occasionally opening the case. His did none of that. So the drive arrives in its original condition, which is exactly what a recovery wants.
Why his material helps too: twenty years of documents and spreadsheets is a great many small files spread across the whole disk. That matters because head damage is usually zonal — confined to particular areas rather than covering a surface — so a bounded damaged region takes out the files that happen to live there and leaves the rest intact. A large media archive can lose a great deal to one bad zone; thousands of small documents distributed across a 2TB drive lose proportionately less.
What the answer should look like: not a percentage but a map. The drive is serviced, imaged with damaged regions deliberately deferred, and every unreadable area resolved to the specific files it affects. He receives a list of what came back complete, what came back partial and what did not come back, rather than an estimate.
On the bench
The drive was not powered on arrival, since clicking is a fault to be inspected rather than reproduced. It was opened under the laminar flow bench and the head assembly and platter surfaces examined before anything was switched on — the scoring located and measured against the intact area, which is the measurement that answers his question rather than estimating it. Matched donor heads were fitted, and imaging ran on the PC-3000 Express under Data Extractor: head-mapped and prioritised, the healthy expanse captured completely first, in one supervised session. Every unreadable region was resolved to the individual files it affected.
The outcome
The surfaces measured, the head assembly replaced and the drive imaged in one session, with the result delivered as a per-file map. Free assessment, one fixed written figure including VAT, 50% of parts and labour upfront with the balance only on successful recovery. The honest answer to his question: nobody can give a percentage before the surfaces are inspected, because the outcome depends on whether the heads have made contact and how much area is scored — anyone offering a figure in advance is guessing. But two things already shift it in your favour: stopping at the first click, which is the largest variable an owner controls, and a shop that referred rather than experimented. Thousands of small documents spread across a large drive also fare better than a media archive, because head damage is usually confined to zones.
Asking what the chances are on a clicking drive
Be suspicious of anyone who gives you a percentage before opening it. Clicking means the head assembly is failing to position itself, and the outcome depends on whether the heads have touched the platters and how much area is scored — which nobody can see from outside. What you should be offered is an inspection that converts the range into an answer, and a result reported file by file rather than as an estimate. Meanwhile, the biggest factor is already in your hands and it's decided in the first few minutes: stop using it. Every power-up moves a damaged head assembly across your data, and the difference between a drive connected twice and one connected fifty times is often the difference between nearly everything and a partial result. Don't let a general shop keep testing it either — referring it on rather than experimenting is the right call.
Nobody can give a number before looking — call Glasgow Data Recovery on 0141 404 0294; surfaces measured under inspection, serviced with matched donor parts, and losses named file by file.
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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.