Job record · Portable drives · MKD-2025-4635
That Tick Is the Head, Not Your Cable.
The diagnosis reached us a day before the drive did. The IT firm that keeps his site laptops going had listened once, put the lid straight back on, and said it plainly — that tick is the head, not your cable
and you want a lab for this, not a workshop
. The Seagate had come to him used, off a local selling page. It went off his Wolverton office desk mid-copy when the lead caught a chair arm. On it: a photo of every drive and patio I've laid since I started up
.
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Without the jargon.
Two things are worth saying about that verdict. It was right, and it was also the end of what a workshop can usefully do. A head flies over its platter at a height set on a production line, in units nobody measures in millimetres; bend the arm and no bench in the country puts that back. The remedy is a donor stack from an identical family, or nothing. What no one can tell you beforehand is the state of the surfaces underneath. Drop a drive while it is reading and a head can touch down. Contact marks get avoided, never decoded. A firm price quoted before the lid comes off is a guess wearing a suit.
The kit this job needed.
See how a job runs here →| Kit | Why it was used | What it gives us |
|---|---|---|
| DeepSpar Disk Imager 4 | Graded each head for reliability once the new stack was reading | Maps the heads, then images each — resets, timeouts and power cycles controlled |
| PC-3000 Data Extractor | Sequenced the reads so the damaged zone came last, after the safe ground was banked | The PC-3000 imager, driven from the firmware side of the tool |
| ACE Lab PC-3000 Express | Pulled the drive's own service log — the one record a used disk cannot fake | Talks to drives in each maker's own command set, beyond what standard ATA covers |
What happened on the bench.
Open it first, and let the surfaces set the plan
Under the microscope the verdict stood: one arm sat proud of the others, and a stack out of alignment is scrap as an instrument. The surfaces mattered more. A landing had left a light band of contact on the second platter — real damage, but shallow, and not the deep circular scoring that puts a case beyond reach. The firmware log filled in the rest: this drive had been retiring sectors long before he owned it.
Finding a donor a slim mechanism will accept
Portable Seagates are built thin, and thin mechanisms are particular about what goes inside them. Donor and patient had to share a family and a firmware generation; the number on the label narrows the field and settles nothing. A stack came off our donor shelf, went in under laminar flow, and the drive spun up steadily. Head by head, we graded what it could read before a single byte was copied in bulk.
Safe surfaces early, the marked band last
The healthy platters were copied first, end to end, while the transplant was at its best. The damaged band waited until the finish and was treated sparingly — brief passes, retries capped, the drive rested in between. It gave up a fair share of itself, then stopped paying its way, and we stopped asking.
The outcome.
Almost the whole record came back: years of job photographs, verified and sorted by address, on new media. He also got the shortfall in writing — one folder, his first summer's work, lay under the contact band and stayed there. He had wanted that set for a warranty argument. For a used drive dropped while running, with no copy anywhere, the balance still fell his way.
Other jobs from the casebook.
Also filed under Portable drives.
Does that sound like your device?
One lesson runs through the lot: cut the power, let us look for free, then decide with the facts in hand.