Data Recovery Case File · Cameras, Drones & Cards · What the Price Is For

Reading Memory Directly Is Slow, Skilled and Destructive, Which Is What It Costs For

His enquiry asks a fair question about a figure he found alarming. A card that "died while transferring the files to the computer" and is now unreadable everywhere, where another provider said the memory would have to be accessed directly and quoted accordingly. The technical explanation he was given is accurate, and it is worth setting out what that work actually is, so the figure can be judged rather than simply reacted to.

The decode: what the work involves, and why it is priced as it is

Why the diagnosis is likely correct: the card is unreadable on every reader and on its own camera. Absence across all of them means it never completes its introduction, which places the fault at the controller — the component that manages the memory and speaks for it.

Why that closes the ordinary routes: every consumer reader and every piece of software works through that controller. None of them can address the memory when the controller will not present it, so the alternative is to reach the memory another way.

What reaching it involves physically: removing the memory from the card and reading it on equipment built for that purpose. On many cards the memory is not a separate component but part of a single moulded assembly, which makes the removal delicate and sometimes not possible at all.

Why the removal is the least of the work: what comes off is raw memory content, not files. The controller had distributed data across the memory by its own scheme, remapped regions as they wore and maintained the map relating apparent to physical position — and none of that comes with the chip.

What therefore has to be done afterwards: the scheme is reconstructed in software, from the data itself, by working out how the original controller must have arranged things. That is the substantial part of the job, and it varies with the controller, the card and how the content was written.

Why it is irreversible, and this is the part that matters commercially: the card does not go back together. The effort is expended whether or not the reconstruction succeeds, which is why work of this kind carries different terms from ordinary recovery.

What those terms are here: part of the parts and labour payable upfront with the balance only on success. An unsuccessful attempt costs the upfront portion rather than the full figure — which is a different arrangement from paying in full regardless.

Why comparing quotations is reasonable and what to compare: not the headline figure alone. What is payable if it fails, whether the assessment is free, and whether less invasive routes are attempted first — those change the real cost more than the quoted number does.

Why less invasive routes should be attempted first: some controllers that will not present to a host can still be worked with through diagnostic modes. That route is cheaper, reversible and yields the same content, and it should be excluded before anything is removed.

What must not happen meanwhile: no further insertion into readers or the camera. Each attempt is another power cycle on a failed controller, and the offer to format will appear.

On the bench

Less invasive routes were assessed before direct memory access was accepted as necessary — absence across all readers and the originating camera indicating enumeration never completes, which places the fault at the controller and closes routes that work through it. Direct access requires physical removal, yielding raw content rather than files, since the distribution scheme, wear remapping and position mapping remain with the controller and must be reconstructed in software — the substantial and irreversible part of the work.

The outcome

Less invasive routes assessed first, the device addressed through hardware, and the memory read directly with the arrangement reconstructed. Free assessment, one fixed written figure including VAT; where a chip has to be removed, 50% of parts and labour is payable upfront with the balance only on success — otherwise no recovery, no fee. The decode: what you were told is accurate. The removal is the smallest part — what costs is rebuilding the arrangement the controller kept, from the data itself, and the fact that the card cannot be reassembled afterwards.

Our case files are drawn from genuine enquiries received by our laboratory over the past ten years, anonymised to protect client confidentiality. Each one describes the diagnostic and recovery procedure our engineers apply to that fault, using the equipment listed.