Data Recovery Case File · Legacy & Obsolete Media · Six Jobs, Not One
Drives From Different Eras Share Nothing Except the Person Who Owns Them
Her enquiry arrives with an itemised list from elsewhere, which is unusually easy to work with. Six system drives from a succession of operating system generations, with "forensic recovery of deleted sectors, around 3,652 files to be recovered", and a line item for each drive. Six drives of that spread are six separate jobs, sharing an owner and an objective and very little else.
| Media | Six hard drives from personal computers of successive generations, in differing formats — deleted content sought across all; prior itemised quotation held |
| Reported situation | Six hard drives retained from computers of successive generations · drives in various formats · access to historical files sought · deleted content included in the requirement · approximate file count identified from a prior assessment · itemised quotation obtained elsewhere · comparison sought |
| Fault class | Legacy media across multiple generations — interface, geometry and filesystem differing per drive; deleted content recoverable where subsequent use was limited |
| Equipment used | Each drive treated as an individual job with its own interface and filesystem · period-appropriate controllers used with current draw measured on a controlled bench supply · each imaged write-blocked at the block level before any interpretation · filesystems identified from structures within each image · deleted content carved from unallocated regions per drive |
The decode: what varies between them, and what the file count really means
Why six drives is not six times one drive: they differ in almost every respect. Interface, capacity, geometry, filesystem and the conventions of their era all change across that span, and each has to be approached on its own terms.
What varies most practically: the interface. Drives of that period use connections no longer present on modern machines, requiring period-appropriate controllers — which is a matter of having the right equipment rather than a technical obstacle.
What varies most consequentially: the filesystem. Earlier generations used simpler arrangements with different deletion behaviour, and how recoverable deleted content is depends on which one a given drive used.
Why that matters for the deleted-content requirement specifically: older filesystems frequently leave more behind. Simpler deletion handling means entries and content survive where a modern extent-based filesystem would have cleared the pointers — so the oldest drives may be the most rewarding.
Why the file count should be treated as an estimate rather than a target: a figure of that precision comes from a scan, which reports what it located at that moment. It counts candidates rather than verified recoverable files, and some will prove to be fragments, duplicates or system files of no interest.
Why that is worth saying rather than glossing: a quotation anchored to a file count implies a deliverable it cannot guarantee. The honest measure is which drives yield and what they contain, established drive by drive.
Why the age of these drives is favourable in one respect: they are small. Capacities of that era image completely in a fraction of the time a modern drive takes, so the per-drive effort is lower than the count suggests.
Why it is unfavourable in another: board components age chemically with elapsed time regardless of use, and lubricant thins. Some proportion of six drives of that vintage will not spin up, and that is a realistic expectation rather than a pessimistic one.
Why they should be assessed before any figure is agreed: a drive that starts and images cleanly is a very different job from one needing board work or a head assembly. Six drives may span both, and quoting a uniform rate across them serves nobody.
What is worth agreeing at the outset: a per-drive decision point. She should be able to stop after any of them, particularly since the earliest drives may contain what she is looking for.
On the bench
Each drive was treated as an individual job with its own interface and filesystem — successive generations differing in interface, capacity, geometry and filesystem conventions, with earlier filesystems handling deletion more simply so entries and content survive where later extent-based arrangements clear pointers. Period-appropriate controllers were used with current draw measured, capacities of that era imaging completely in a fraction of modern time while board components age chemically irrespective of use.
The outcome
Each drive treated as an individual job, read on period-appropriate controllers, and deleted content carved from unallocated regions per drive. Free assessment, one fixed written figure including VAT, quoted per drive with a decision point after each. The decode: six drives of that spread share an owner and an objective and little else. Treat the file count as an estimate of candidates rather than a promise — and note that the oldest drives may be the most rewarding, because early filesystems left more behind.
A set of drives spanning several computer generations
Have them quoted per drive with a decision point after each, rather than as one job — they differ in interface, capacity, geometry and filesystem, and a uniform rate across them serves nobody. Treat any file count you've been given as an estimate of candidates rather than a deliverable, since a scan reports what it located and some will prove to be fragments, duplicates or system files. Two things about age are worth knowing: older filesystems often left more behind after deletion, so the earliest drives may yield most, while board components age chemically and some may not spin up.
Have them quoted per drive — call Manchester Data Recovery on 0161 871 0788; each treated as an individual job, read on period-appropriate controllers, deleted content carved per drive.
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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.