Case notes · Desktop externals · MKD-2025-4334
Two Drives in One Parcel From Dunstable.
A Dunstable letting agency shut a branch and posted both drives together. The old Iomega came out of a stationery cupboard for one last archive copy and would not finish it — a folder takes ten minutes, then it disappears
, which everyone put down to age, what else
. The Seagate was newer and went the way of the furniture: swept off a filing cabinet by a removals trolley, after which it just ticks to itself
and no computer sees it at all
.
Same fault? Start here.
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Without the jargon.
The branch had triaged by ear, and ears get this the wrong way round. The quiet Iomega was the emergency. Its reads had slowed past what the USB bridge would wait for, so Windows kept dropping it part-way through a copy, and it shed a little more ground with every power-up: a drive failing with good manners. The ticking Seagate was the worse fault but the calmer patient. Heads damaged in a fall cannot locate themselves on the platters, and a fortnight on a shelf changes that not at all. Noise tells you a drive is in trouble. It will not tell you which one to open first.
The kit this job needed.
See how a job runs here →| Kit | Why it was used | What it gives us |
|---|---|---|
| DeepSpar Disk Imager 4 | Ran the Seagate after surgery: heads mapped, the best surfaces emptied first | Maps the heads, then images each — resets, timeouts and power cycles controlled |
| PC-3000 Data Extractor | Walked the Iomega through a single complete pass, each stall time-limited and recorded | The PC-3000 imager, driven from the firmware side of the tool |
| R-Studio Technician | Put each drive's directory tree back together out of its completed image | Copes with almost any file system; dependable array rebuilds |
What happened on the bench.
The order came from physics, not from volume
Arriving in the same box earned them nothing; each was judged on its own. Left unpowered, the ticking Seagate would be in the same condition next month as this one, which made it the rare case where waiting costs nothing. The Iomega had no such luxury. Every hour it spent under power took sectors away permanently, so it went on the bench first and the Seagate waited its turn on the shelf.
The Iomega went first, and quickly
The stall was the enemy here, so the stall was rationed. Each read got a fixed short allowance; anything that overran it was logged, skipped, and revisited later at a gentler setting. Nothing timed out on a bus, nothing restarted at sector zero. The failures that had defeated every attempt in the office became lines in a list, and the body of the old drive came over at a steady rate.
Donor parts for the Seagate, and no clock on it
Nothing short of a new head stack was going to help the Seagate, so a matched donor went in under laminar flow and every head was graded before a sector was asked for. The fall had scored one surface. The others were sound and gave up everything they held; the scored one gave what it could.
The outcome.
The results turned the branch's expectations upside down. The Iomega everyone had written off came back all but complete. The Seagate lost the scored band of a single surface, and with it a set of client files, each one listed by name in the report rather than waved past.
Other jobs from the casebook.
Other Desktop externals cases.
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.