Apple machines · clicking drive · ADR-2025-3453
A Model This Bench Has Opened Before.
It reached us already out of the iMac, which is the right order to do things in: a repair centre had lifted the drive out and passed it on. The model was on the label — a Seagate Barracuda 3TB, ST3000DM001 — and the symptom ran to one line. It was making a clicking noise
. Everything else in the message was about the photographs. They were the family's pictures, they were the whole reason for the enquiry, and there was no second copy of them anywhere. He asked to be dealt with by email rather than by telephone.
Same story on yours? Tell us what it does — the look is free.
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What failed, and why.
There is nothing unusual about this one, and that is the useful part. A drive that clicks has heads unable to find the marks telling them where they are above the surface, so it tries, fails, resets and tries again. On this particular Barracuda the pattern is familiar to the point of routine. The model has a long and well-documented history of failing, enough have been through here for the donor question to be settled before the parcel arrives, and the repair is ordinary work under clean air. What is never routine is the platter underneath. Each click sends heads that are not reading across the surface the photographs are written on.
What the bench did with it.
The order of the job →| Equipment used | Its work on this job | The reason for it |
|---|---|---|
| DeepSpar Disk Imager 4 | Imaged with the picture folders read first and the rest of the disk after | Heads mapped first, then one platter side to a pass, with every reset, every timeout and the power itself kept under our own control |
| PC-3000 Data Extractor | Held each pass in check, easing off at a refusal instead of insisting | Works with the drive's firmware and controller directly rather than around them |
| R-Studio Technician | Read the Mac volume out of the image and drew the photographs from it | Puts an array back together from the images, and reads nearly every file system |
What the bench did with it.
A known model shortens the guessing
It was not switched on so that we could hear the noise for ourselves. It went onto a current-limited supply with the draw watched, which showed a mechanism reaching speed and then getting nowhere at all, and the model number did the rest of the work. A donor of the same family and firmware revision was already on the shelf, so nothing waited on sourcing.
Clean air, matched parts, alignment set
Under laminar flow the stack came away and every slider went beneath the microscope. The heads had failed. The surfaces had not, and carried no scoring anywhere along them. A donor assembly matched to this model went in with its alignment set on the bench, and with power restored the drive completed its start-up and reported itself correctly.
Photographs first, and the rest afterwards
The photographs were what the job existed for, so the imaging was ordered around them. The regions holding the picture folders were read at full rate first, and the remainder of the disk followed once those were secure. Whatever hesitated was noted and left for short passes at the close. The drive stayed powered from the beginning of the copy to the end of it, because a repaired mechanism gives its best on the first run after the work and not later.
What went home.
Every photograph was opened and looked at before anything was reported, because a picture that will not open is not a picture returned, whatever the totals say. They went home on fresh media with the rest of the disk alongside them. The Barracuda itself stayed here. A drive wearing a donor stack is a step in a recovery rather than something to keep.
Begin here if yours is doing the same thing.
Other desktop disks on the log.
Yours doing something similar? Power it down first.
Prices are published and fixed. Memory cards and USB sticks are priced at £250 + VAT. A drive on its own comes to £300 + VAT. Anything holding a second disk, whether RAID, NAS or a server, opens at £500 + VAT. The first look costs nothing, and the figure that follows is fixed and in writing before a penny is charged. Switch it off and post it in. Most jobs carry no fee where no files return.