Data Recovery Case File · Portable SSDs · Zero Bytes, Full Drive

"No media" over a terabyte of files: a portable SSD's mid-write collapse — and the chip-level recovery software was never going to reach

His enquiry understood its own dead end, which put him ahead of most. The SanDisk Portable SSD 1TB was fine until Windows Explorer crashed while compressing a file — and since that moment it presents, on every computer he's tried, as a drive-shaped absence: no media, no partitions, zero bytes capacity. He'd run "all the software ways to try and recover," and diagnosed their failure himself with complete accuracy: "everything has failed since there's no partition or media to access and recover from, software-wise." Exactly so. His stakes were a student's, stated without embarrassment: he'd love the files back — and failing that, at least the drive, "as it was £70 and that is a lot for me." Both halves of that get honest answers below, including the one labs prefer to mumble.

The decode: what "zero bytes" means on an SSD — and why the crash timing was no coincidence

This archive has now catalogued the three capacities a failed drive can claim — the wrong size, the right size over lost contents, and this: no size at all — and on a portable SSD the zero-byte presentation reads precisely. Every solid-state drive runs on a controller whose private, constantly-rewritten map — the translation layer between the addresses computers ask for and the physical flash where data lives — is consulted for everything, including the drive's own self-description; a controller that boots and cannot reconcile its map presents exactly as his does: alive enough to enumerate as a device, unable to declare capacity, partitions, or media, because it no longer trusts its own arithmetic. The timing convicts the mechanism: compression is a heavy, sustained write burst — read, crunch, write, update the map, thousands of times a second — and a host-side crash mid-burst is precisely the interruption that catches a translation layer between states, this archive's mid-write genre wearing flash instead of platters. Two things follow, both in his favour. His software verdict was correct and final: recovery applications need a device that presents something to scan, and a zero-byte drive offers them literally no surface — the failure of every tool he tried was structural, not a matter of finding a better one. And the flash itself — the terabyte of actual memory chips behind the confused controller — took no part in the crash: his files persist, complete, in silicon the controller has merely lost the index to, reachable at the layer where laboratories work and software cannot: beneath the controller, in technological mode, where a lost map can be rebuilt from the flash's own internal bookkeeping.

The recovery — and the honest data-or-device answer

The work ran the deep-flash road: the drive taken into manufacturer-level technological mode on the PC-3000, the translation layer reconstructed offline from the metadata every flash page carries about its own contents and place, and the terabyte resolving from "no media" into a fully mapped volume — his filesystem intact to the moment of the crash, the half-compressed casualty of the final operation the only file to bear a mark. Extraction and verification ran normally: documents opened, the student estate — coursework prominent among it — confirmed whole and delivered on fresh storage. Now the £70 question, answered the way it deserves: after this class of failure, the honest offer is data or device, and the data should win. A controller that lost its map once under an ordinary interruption has disclosed its character; even where a unit can be coaxed back to service, this laboratory won't certify a translation-layer casualty as trustworthy storage — so the straight advice, given with the quote and not after it: put the £70 down to the terabyte recovered, warranty-claim or retire the hardware, and let the replacement be whichever current drive the same money buys, used henceforth with the one habit that makes this whole page unnecessary. He took the straight version. Students usually do.

Outcome

Full recovery from a drive presenting as nothing at all — and the page's contributions to the searchable record. "No media / 0 bytes" on a portable SSD is a lost map, not lost data: the flash is almost always fully populated behind it, software genuinely cannot help (your tools didn't fail you; the surface they needed doesn't exist), and chip-level reconstruction is the actual route. Crashes during heavy writes are the classic trigger: compression, big copies, backups — let them finish, and eject properly, because the map updates last. And the budget honesty, for every student reading with his exact arithmetic: the free assessment and fixed quote exist so the can-I-afford-it question gets a real number — and when the answer includes "the drive itself shouldn't be trusted again," a lab that says so before taking your money is showing you what the rest of its answers are worth.

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.