Case Study · Apple iMac Hard Drive
Smashed with a sledgehammer. Not written off.
A Western Digital WD5000AAKS 500GB drive, pulled from an Apple iMac after being taken to with a hammer — broken PCB, bent chassis, seized heads. Here is what the recovery actually involved, in our own cleanroom laboratory.
The case
A media company, a migration, and a hammer.
The client, a media company in Northern Ireland, was retiring an Apple iMac from 2010 and moving to a new machine.
They used Apple's Migration Assistant to copy everything across. The assistant reported the transfer complete, so the old iMac — and the Western Digital WD5000AAKS 500GB drive inside it — was taken outside and destroyed with a sledgehammer.
After rebooting the new iMac, the client discovered the migration had not brought everything over. What was missing was still sitting on the drive they had just smashed.
The drive arrived at our lab with a broken PCB, holes punched through the frame, and a completely bent chassis. Not a promising start for any data recovery job.
Damage assessment
Nearly every failure mode at once.
Initial inspection found four separate problems stacked on top of each other — any one of which is enough to end a DIY attempt.
- Damaged PCB. The circuit board itself was broken by the impact.
- Damaged body and frame. Holes in the casing and a chassis bent out of shape.
- Damaged reading heads. The head stack was physically wrecked.
- Seized spindle and engine. The motor that spins the platters would not turn.
- Platter contamination. Debris from the impact had reached the platter surface.
A workable PCB, a seized engine, a contaminated platter and broken heads — on their own, each is routine. Together, on one drive, this is about as bad as a case gets.
The recovery
PCB swap, cleanroom teardown, full platter transplant.
- 01
Donor PCB prepared
A donor board was sourced and the adaptive data from the original ROM chip was transferred across, giving the drive a working circuit board again.
- 02
Cleanroom inspection
With power restored to the electronics, the drive was opened in a laminar flow cabinet for a full internal inspection. The reading heads were confirmed badly damaged and the spindle motor seized.
- 03
Full platter transplant
With the engine seized, a platter swap was the only route forward. The platters were removed from the smashed drive and transferred into a matching donor housing — the most demanding procedure in physical hard drive recovery, and one only used when the motor or bearings have failed.
- 04
Donor heads and platter clean
The damaged original heads were removed. A pair of suitable donor heads was fitted to the transplanted platters, which were then cleaned in preparation for a read attempt.
What a case like this costs
Why physical recovery is quoted after diagnosis, not before.
A job combining a PCB swap with a full platter transplant onto donor mechanics sits at the top end of hard drive recovery work. For a case of this severity, expect a fixed quote in the region of £500–£700 once the drive has been assessed and the donor parts identified — a fraction of the cost of losing a media company's working files outright.
It is also a good illustration of why "the migration finished" is not the same as "everything copied". Verify a transfer before you destroy the source.
Physical damage, a broken PCB, a seized motor — describe what happened and get an honest recoverability view and a fixed quote before any work begins.