A plumber’s LaCie Rugged had slowed to a crawl — ten hours to copy two small files, larger ones failing outright — with the business’s invoices and client records on it. A drive that slow isn’t just old; it’s dying, spending all its time retrying sectors it can no longer read. Every hour of use loses more. We stopped it, imaged it against the clock before it failed completely, and rescued the business.
A plumber brought in a LaCie Rugged external drive that had become almost unusable. Files took hours to open or copy, Finder and File Explorer crawled or froze when browsing it, and in one attempt only two small files copied in ten hours while anything larger failed. On the drive were job invoices, client details, equipment logs and financial records — the paperwork the business ran on. They’d kept trying to copy files off, which is understandable but risky, and once they realised it was getting worse they stopped and sent it to us. With this fault, stopping is exactly right — a slow, failing drive is on borrowed time.
A drive that has become glacially slow is almost never ‘just old’ — it’s failing, and the slowness is the symptom. The cause is bad sectors: areas of the platter surface the heads can no longer read reliably, through magnetic degradation, wear or tiny physical defects. When the drive meets a bad sector it doesn’t give up immediately — it retries, over and over, for seconds at a time, trying to wring a good read out of it before moving on. Multiply that by thousands of bad sectors and every file access becomes an exercise in waiting, which is precisely why the LaCie took hours to do almost nothing. Worse, bad sectors spread: as the media degrades the count grows, and all that constant retrying works the heads hard — so a drive in this state can tip from ‘slow’ into a full mechanical failure at any time. Every hour it runs, more data goes out of reach.
The instinct — keep copying and hope it finishes — is the one that finishes the drive off. Ordinary copying, in Finder or Explorer, has no way to skip a bad sector gracefully: it hits one, waits through the drive’s full retry cycle, and stalls, all while the heads labour over failing media. Left running like that, a marginal drive is being pushed towards the head crash that ends the recovery. The right approach is the opposite of ‘keep trying’: stop, and get the readable data off in a single, carefully-controlled pass before the drive deteriorates further.
Recovering a failing drive is really a triage operation, and it’s where specialist imaging hardware earns its place. The LaCie was imaged sector by sector to healthy storage, write-blocked, with the imager configured for dying media: read retries capped low, so a bad sector is skipped in a fraction of a second rather than retried for minutes; the healthy areas read first, to secure the great bulk of the data quickly while the drive still cooperated; and the weak zones revisited afterwards in several gentle passes — including reading in reverse across stubborn regions — to coax out the maximum without stalling the heads on any one sector. The drive’s condition was watched throughout so work could pause if it started to slip. That sequence — secure the easy data, then chase the hard data — is what gets the most off a drive that could die mid-recovery.
Everything captured went onto a healthy image, and all further work happened there, with the failing drive read only once. From the image, the file system was repaired and the plumber’s data reconstructed, with files that had run partly through the bad areas rebuilt at file level as fully as the readable data allowed. The genuinely dead sectors — where the surface was too far gone to read — accounted for a small permanent loss, leaving a 98% recovery, with the invoices, client details, equipment logs and financial records all restored and verified before return on a fresh external SSD. The lesson we passed on: a drive that has become very slow is warning you it’s failing, so the moment that happens, stop using it, get the data off, and keep a backup — because the difference between 98% and nothing is often just how many more hours the drive was run before it was switched off.
Retry-limited sector imaging with healthy-areas-first strategy and reverse-read passes · drive-health monitoring during imaging · file-system repair on the image · file-level reconstruction of partially-read files · verification and transfer to fresh media. All work in-house at our Belfast lab.
A drive that’s crawling is usually failing, and every hour of use loses more — so stop copying and switch it off. Send it in for a free, no-obligation diagnostic; we’ll image it safely before it degrades further. We’ll tell you what can be recovered and put a fixed price in writing before any work starts, and on most jobs it’s no fix, no fee. UK-wide by post, or drop it to us in Belfast.
Usually yes. A drive that’s crawling is almost always failing, not merely old — the slowness comes from the drive retrying bad sectors it can no longer read. Because bad sectors spread and the retrying stresses the heads, a very slow drive can fail completely at any time, so the safest thing is to stop using it and get the data recovered before it degrades further.
No — that’s the most likely way to lose them. Ordinary copying stalls for minutes on each bad sector and keeps the failing drive working hard, pushing it towards a total failure. Professional imaging skips bad sectors quickly, secures the healthy data first, then goes back for the difficult areas — recovering far more than repeated copying ever could.
Usually most of it, yes, if the drive is stopped in time. Imaging the drive carefully recovers everything the heads can still read, and files that ran partly through bad areas can often be repaired. Only the sectors that are truly dead are lost — and how many that is depends largely on how long the drive was run while failing.