Data Recovery Case File · Trust, Practice & Honest Limits · Count the Copies
Almost Everybody in This Archive Had One Copy
Her enquiry contains an apology before it contains a symptom. A drive she has kept all her files on: "it was silly of me to not be keeping a backup of files on other drives." That sentence, or a version of it, appears in a large share of the enquiries in this archive — and it is worth saying plainly that single-copy storage is the ordinary condition rather than a personal failing, and that the reproach helps nobody make a good decision now.
| Media | 1TB external hard drive holding the owner's sole copy of accumulated personal files — access difficulties developing |
| Reported situation | External drive used as the owner's principal file storage over an extended period · no second copy maintained · access difficulties developing recently · contents required |
| Fault class | Undetermined pending assessment — sole-copy exposure material to handling and to sequencing of any capture |
| Equipment used | Sole-copy status established as a handling constraint before any attempt · no repeated connection permitted · Atola Insight Forensic error-rate assessment · imaged write-blocked under per-sector timeouts · second copy provided on delivery |
The decode: why the confusion is built into the words
Where the guilt comes from: everybody has been told to back up, and she believes she did not. What almost nobody is told is what a backup actually is, which is where the difficulty starts.
The distinction that matters: a backup is a second copy of something that exists somewhere else. A drive holding the only copy of your files is primary storage, regardless of what it is called, what it was sold as, or what folder is on it. Moving files onto an external drive and deleting them from the computer does not create a backup — it relocates the original.
Why the marketing makes this worse: external drives are sold as backup drives. The word is on the box. So people who bought one, used it as instructed, and moved their photographs onto it reasonably believe they have done the thing they were told to do. They have one copy on a device named after having two.
Why the reproach is actively unhelpful right now: somebody who feels foolish makes hurried decisions. They keep plugging the drive in to check whether it has recovered. They run software they found in a search. Guilt produces exactly the behaviour that turns a recoverable fault into a worse one, which is the practical reason to set it aside rather than a kind one.
What to do instead, and it is the whole of it: stop connecting it. Whatever the fault, repeated attempts do not improve it, and the position today is better than the position after another six attempts.
The rule worth taking away afterwards, which is simpler than any advice about backing up: count the copies. Not devices, not drives, not folders — copies of the actual thing, in different places. If the answer is one, it is not backed up, whatever the device is called. If the answer is two and they are in the same room, count again after imagining a burst pipe.
Why that formulation works better: it is a question with a number for an answer, asked about the material rather than the hardware. Everybody knows what "back up your files" means and almost nobody knows whether they have done it. Everybody can count to two.
On the bench
Sole-copy status was established as a handling constraint before any attempt — a drive holding the only instance of its contents permitting no exploratory connection, since each attempt trades an unknown amount of remaining margin for information already obtainable by measurement. No repeated connection was permitted. The Atola Insight Forensic assessed error rates, imaging ran write-blocked under per-sector timeouts, and a second copy was provided on delivery.
The outcome
Sole-copy status treated as a handling constraint, error rates measured, and a second copy provided with the recovered material. Free assessment, one fixed written figure including VAT; where a drive has to be opened, 50% of parts and labour is payable upfront with the balance only on success — otherwise no recovery, no fee. The decode: a backup is a second copy of something that exists elsewhere, so a drive holding your only copy is primary storage whatever it was sold as. Most people in this archive were in exactly your position. Stop connecting it, and afterwards count copies rather than devices.
Realising you only had one copy
Set the reproach aside and stop connecting the drive — those are related, because feeling foolish is what makes people keep plugging it in to check, and repeated attempts are what turn recoverable faults into worse ones. Single-copy storage is the ordinary condition rather than a personal failing. A backup is a second copy of something that exists somewhere else, so a drive holding your only copy is primary storage whatever the box called it, and moving files onto an external and clearing the computer relocates the original rather than duplicating it. Afterwards, use a rule that has a number for an answer: count the copies of the actual material. If it's one, it isn't backed up.
Stop connecting it — call Oxford Data Recovery on 01865 593000; sole-copy status treated as a handling constraint, error rates measured, imaged under per-sector timeouts, second copy provided on delivery.
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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.