Bench file · Pocket-size drives · MHD-2025-7134
It Tries Five Times, Then Stops.
Twelve years of camcorder tapes transferred to disk, and her mother’s photograph albums scanned page by page, all on one Passport whose final copy had been cut short by a move to Wokingham when the lead came away mid-write. It then spent the winter shut in a drawer. Tried again in March, the laptop still does its little welcome noise
, and Windows is perfectly willing to eject it, yet a drive letter never turns up. What it does instead can be counted: five quiet hums, and then it gives up
, always the same five.
Much the same fault? Call us.
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In everyday terms.
The number is neither random nor a fault code: it is written into the firmware. At each power-up the drive asks the motor for rotation, checks whether the platters are up to speed, and after a fixed number of failures it shuts the attempt down rather than cook the coil it is driving. Those five hums are the drive meeting a ceiling it set for itself, because something inside refuses to move. The USB electronics in the enclosure are a separate small computer in good order, which is why the laptop sounds its chime, shows a device in the list, and cheerfully proposes ejecting a drive it has never read a byte from.
What the bench used here.
How a job is handled →| Tool | Why we used it | What it brings |
|---|---|---|
| ACE Lab PC-3000 Express | Watched the five attempts on a controlled supply, then supervised the read afterwards | Reaches the vendor-specific commands that ordinary ATA has no way of issuing |
| DeepSpar USB Imager | Imaged through the drive’s own USB board, keeping WD’s hardware encryption in place | Imaging held to the usual pace, over the USB bridge |
| UFS Explorer Professional Recovery | Opened the completed image and checked every folder in it by hand | Reads the awkward filesystems others stumble over: APFS, ReFS, XFS, ZFS, Btrfs |
The lab work.
Do it once more, with the current in view
One controlled repetition on a current-limited bench supply settled the question: five rising surges as the motor put its shoulder against something, no trace of the platters getting anywhere near speed, then the firmware standing down. A spindle working against a fixed obstruction behaves exactly that way. It also meant every attempt made at home had done no further harm.
Into clean air, and lift the heads clear
Clean air explained the history. The copy cut short by the move had left the heads down on the recording surface instead of returning them to the ramp, and a winter in a drawer had welded them there. They were eased off by hand, and both contact marks were inspected under magnification before the motor was given another opportunity.
A single unbroken pass, over its own board
My Passport drives encrypt on the USB board itself, so imaging ran through that same board, with the hardware placed downstream of it, along exactly the path WD intended the data to travel. It went from first sector to last without a pause. A head assembly that has once bonded to a platter is never allowed a second cold start.
How the job closed.
All of it came back — the transferred tapes, every album page that had been scanned, the lot — handed over on new media with a single piece of advice. The second copy belongs under somebody else’s roof. That Passport will not be going back into service.
More of the jobs we've closed.
Filed under Portable drives too.
Does any of that match your case?
Nothing needs deciding until the diagnosis is back: switch the device off, send it in, and let the findings settle it.