Portable hard drives · bench notes · NTG-2025-2075
A Fortnight of Rattling, Then Nothing Would List It.
Getting to a barn conversion out past Sewstern meant a fortnight of rutted farm track, in and back out again twice a day, and the drive rode every yard of it in a toolbox jammed behind the seats. Wherever the job is, it is with me
, says the building surveyor in Grantham whose drive it is, and nothing had ever come of that arrangement before. Afterwards there was a rattle the second it starts turning
. A few more days of use and no machine would list it at all: Disk Management shows me nothing either
. Laptop on site, desktop at the office, silence out of both, and a different cable changed nothing
.
Yours doing the same? Say what it is up to — looking is free.
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What went wrong, and why.
Moving parts inside a hard drive come to two: the discs on their spindle, and the arm that carries a set of heads over their surfaces. Everything else in the casing is meant to stay put, so a rattle at spin-up leaves a short list rather than a long one — a screw adrift, a component sheared off, or slack in a head assembly built to be rigid. She had done half of the narrowing herself: two machines, a second cable, the same silence from each, so whatever it is sits behind the lid, where nothing you can do at a desk will reach it. The catch is that every revolution takes the loose piece over a recording surface once more. We charge nothing to look, and the day the noise starts is worth a great deal more to you than the week after.
The bench work this one took.
How the work runs →| Kit on the bench | What it did on this job | Why we reach for it |
|---|---|---|
| PC-3000 Data Extractor | Imaged the rebuilt drive one surface at a time, every limit set short | Reads through the drive's own firmware and controller instead of working round them |
| DeepSpar Disk Imager 4 | Head map before anything else: five surfaces answering, the sixth scored near its rim | One platter side per pass, with the heads mapped before a single sector is taken off, and the resets, the timeouts and the power all held under our control |
| UFS Explorer Professional Recovery | Put the NTFS folder tree back together from the finished image | Reads APFS, ReFS, XFS, ZFS and Btrfs where other tools give up |
What happened on the bench.
The loose piece, once the lid was off
Laminar flow, lid off, and there it was without any searching. The end stop had sheared where it meets the actuator, leaving half of itself to roll about the casing. The head stack showed play far beyond what the design tolerates, with one suspension no longer sitting square to its neighbours. Slack of that order will drop a head onto a platter at more or less any seek, so before a single decision was taken about copying, all six surfaces were graded beneath the stereo microscope.
Mechanics first, then measure what the delay cost
One matched donor supplied the pair of parts wanted here — a head stack, and an intact end stop. Nothing at all was copied until the drive, back together, had produced a full head map. Five surfaces answered without complaint. On the sixth there was a score running the whole way round the outer edge, and that band is what those few extra days of use cost her.
One pass, and then the drive is retired
One sitting and one copy. The five sound surfaces went quickly; the scored band was left until the end and then worked at with no limit set, the imager allowed whatever time each sector wanted. What donor heads buy is access, not a repair, so the rebuild had exactly one purpose. That purpose served, the drive came off the bench and never went back on it.
What was returned.
Five surfaces of the six came off whole. The sixth held part of a church survey, and every document still missing is named individually in the report — no percentages appear in it anywhere. The archive now lives on two drives, and neither of them leaves the office. Before any chargeable work began she had the figure in writing: the published single-drive band, £300 + VAT.
Start here if the same thing is happening to yours.
More portable-drive jobs on the log.
Sounds like yours? Switch it off before anything else.
£250 + VAT covers a card or a USB stick; a single drive is £300 + VAT; RAID and NAS start from £500 + VAT. Nothing is charged for the first look, and a fixed figure reaches you in writing before any chargeable work begins. Switch the device off, leave it alone, and post it in. On most jobs, no data back means no fee.