Case file · PCs & notebooks · BHD-2025-8326
The Health Check Passed. The Full Scan Never Finished.
He had a buyer lined up for the IdeaPad, which is how a routine wipe turned into a case. Lenovo’s own built-in diagnostics, run before he erased anything, came back with two answers that cannot both be true: it says the disk is healthy, then the long scan stops on an error every single time
. His reading of that was sound — there is nothing wrong with the laptop, so it has to be the drive
— and three folders were all he wanted back.
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What that means.
Trust the test that actually went and read the platter. SMART is the drive’s opinion of itself, measured against thresholds the maker chose with plenty of headroom, so a disk can be carrying a great deal of real wear and still report itself well. An extended test does something else entirely. It reads the surface from one end to the other and halts at the first thing it cannot get past. Both answers can be given in good faith and still point opposite ways, and the disagreement between them is the part worth acting on. Most drives give no warning before they stop. This one had been giving warnings for months.
What did the work here.
The order of the work →| Equipment | The job it did | What it adds |
|---|---|---|
| ACE Lab PC-3000 Express | Pulled the service logs and defect tables SMART never shows you | Gets at the factory service commands that standard ATA cannot carry |
| DeepSpar Disk Imager 4 | Two imaging passes: the willing areas first, then the slow band mapped out | Head mapping first, then one surface at a time, with resets, timeouts and power all governed |
| R-Studio Technician | Lifted the three folders out of the image and opened every file | Broad file-system support, with RAID rebuilds that can be trusted |
What we did.
Look underneath the headline pass
The detail was less comfortable than the verdict. Reallocated sectors had climbed steadily for most of a year, another set of addresses sat waiting for judgement, and one band of the platter handed its data back many times slower than the surface either side of it. No count had used up its allowance, so the drive went on calling itself healthy. Plenty of disks die inside that gap.
He wanted three folders, so the whole disk was read
Pulling three folders on request would have sent the heads chasing back and forth over a surface already giving way, because the files themselves lay scattered across every platter. One steady sweep from end to end asks far less of the mechanism, and the awkward band could be left to a closing pass. It also puts the rest in the bank while the drive is still handing things over.
A directory listing proves nothing
Out of the completed image came letters, spreadsheets and photographs, and every file was opened rather than counted, since a name on a listing says almost nothing about the state of what is under it. The unreadable sectors were matched up against the file table too, and none of them turned out to sit inside the three folders he wanted.
How it closed.
The three folders went out to Yardley checked, and a complete image of everything else stayed here. A fresh SSD replaced the old disk in the IdeaPad ahead of the sale. It had been going downhill far quicker than its own report card let on.
Other pages worth a look here.
More from the PCs and notebooks file.
Is yours behaving the same way?
Switch the device off, post it in, and decide nothing until the diagnosis comes back to tell you where you stand.