Casebook entry · Portable drives · MKD-2025-4925
It Rattles Too Much and No Longer Shows Up.
The Expansion had spent the summer in a toolbox in the back of a surveyor's van — it goes everywhere I go, site to site
— and after a fortnight of rutted farm tracks on a barn conversion near Winslow it started rattling as soon as it spins up
. She carried on for another few days. Then it disappeared completely: not even in Disk Management now
, on her own laptop and the office machine both, and a brand new cable made no difference
.
Same fault? Start here.
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Without the jargon.
In a working drive the only parts free to move are the ones meant to: the platter stack turning on its bearing, the heads swinging on their pivot. A rattle when it spins says that arrangement has broken down — something loose in the casing, a fixing backed out, or a head assembly with slack in it — and every revolution hands the loose part another chance. Her own testing had already done the useful sorting: two computers, a new cable, the same silence from all of it. That put the fault inside the case before the parcel was even taped up.
The kit this job needed.
See how a job runs here →| Kit | Why it was used | What it gives us |
|---|---|---|
| PC-3000 Data Extractor | Directed the read after the rebuild, one surface at a time, tightly limited | The PC-3000 imager, driven from the firmware side of the tool |
| DeepSpar Disk Imager 4 | Its head map separated the five sound surfaces from the damaged one | Maps the heads, then images each — resets, timeouts and power cycles controlled |
| UFS Explorer Professional Recovery | Brought the NTFS volume up off the image with the directory tree intact | Ahead of the pack on difficult filesystems: APFS, ReFS, XFS, ZFS, Btrfs |
What happened on the bench.
Find out which part is rattling
Under laminar flow the noise identified itself at once. The actuator's crash-stop had sheared, and the broken end was rolling around inside the casing; the stack had picked up movement no design allows, one suspension bent out of line with the rest. Every platter surface then went under the stereo microscope, since a stack with that much slack can touch down on any seek it makes.
Fix the mechanism first, then measure every surface
A matched donor assembly went in, replacing both the ruined stack and the sheared stop, and the first thing asked of the rebuilt drive was a survey rather than a copy. The head map answered honestly: five clean surfaces, and a sixth scored round its outer edge — the price of the days it was made to keep working after the noise began.
A single careful read, then permanent retirement
The read ran as one unbroken sitting: the sound surfaces first, then the scored band, last of all and slowly, with the imager supplying the patience. Donor heads are borrowed, not fitted for good. The drive gave its one performance, then left service permanently.
The outcome.
The five sound surfaces returned complete. The scored one cost her part of one chapel survey, every missing file listed by name. Her archive sits on two drives now, and neither rides in the van.
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.