A USB drive may be physically detected while its volume is inaccessible, RAW, or accompanied by a Windows format prompt. That is a logical-access problem until evidence shows otherwise. The first goal is to recover files from the existing state. File-system repair and reformatting belong after the recovery set has been verified.
Recognize the recoverable boundary
Open Disk Management and identify the device by capacity. The most useful distinction is between the physical disk and the volume on it.
- A physical disk with a plausible capacity and a RAW, unallocated, or inaccessible volume can be a software-recovery candidate.
- A healthy-looking volume that lacks only a drive letter may need a mount correction, though recovery should still take priority if data is missing.
- A disk that repeatedly disappears, freezes the system, reports “No Media,” or shows an implausible capacity may have a device-level problem.
Do not initialize a disk containing needed data. Microsoft’s initialization procedure is intended for new disks without existing data. Do not accept a Windows format prompt merely to obtain a drive letter.
Avoid repair-first instructions
CHKDSK is a repair tool, not a read-only recovery scan. Microsoft documents that `/f` fixes errors, `/r` locates bad sectors and recovers readable information, and `/x` forces a dismount when necessary. Microsoft also warns that FAT repairs can change the allocation table and cause data loss.
Those changes may make a damaged volume mount again, but they can also alter evidence a recovery scan would use. If the files matter, recover first. Run repair only after the recovered files have been checked and the source has been preserved or imaged when appropriate.
The same rule applies to formatting and repartitioning. A new empty file system may make the device usable, but it does not recover the old content.
Record the symptom before it changes
Capture the exact Windows message and the capacity shown in Disk Management. Note whether the partition is RAW, unallocated, offline, or simply lacks a drive letter. Record whether the problem followed an unsafe removal, power loss, interrupted format, or use in another device. These observations help distinguish a damaged file system from an unstable USB controller.
Do not repeatedly open folders or accept prompts while collecting evidence. A screenshot or written note is enough. The goal is to preserve the current state and choose the lowest-risk readable source.
Stabilize the connection
Use one known-good USB port. For a drive connected through an adapter or hub, test one known-good alternative if the device is otherwise stable. Avoid repeated plug-and-unplug cycles. Stop if the drive becomes hot, disconnects during reads, or causes long system stalls.
When a device has unreadable regions, XRecovery can time out on bad reads and continue scanning later areas. That behavior can collect accessible content; it cannot reconstruct data stored in unreadable cells. An unstable or uniquely valuable drive deserves a lower threshold for professional evaluation.
For a stable device with intermittent read errors, creating a byte-for-byte image can reduce repeated reads of the original. XRecovery supports loading disk images, and it can save and restore scan sessions. Imaging is not a cure for unreadable sectors: the copy can include only bytes the system succeeds in reading. Store an image on a different disk with enough free space and keep the source unchanged.
Scan the source on Windows
XRecovery 3.1.6 is a Windows application. It can scan partitions, physical disks, and external devices visible to Windows. Supported Mac or Linux file systems can be scanned when the media is attached to Windows; the application itself does not run on those operating systems.
- Verify the target by device type and capacity.
- Select the physical USB device or the relevant volume in XRecovery.
- Start the scan. Quick scanning runs first, followed automatically by deep scanning.
- Review found partitions, folder-based results, and signature-based results.
- Preview representative files where supported.
- Export a small sample to a separate physical drive.
- Validate the sample, then recover the remaining useful candidates.
Scanning is read-only, but saving recovered files is a write operation. XRecovery warns against using the source as the destination, and the warning can be overridden. Keep the source and destination separate.
Interpret folders, names, and file types carefully
Corruption can damage directory records without destroying every file body. A scan may therefore present two kinds of evidence. File-system-aware results may preserve original paths, names, dates, and relationships. Signature-based results identify supported content patterns even when directory metadata is missing.
Signature results can lose names and folders. They may also include duplicates, partial files, or false positives. XRecovery supports common photo, video, and document formats; format recognition is not universal. No result list can prove completeness without opening the files.
Verify files before changing the drive
Inspect recovered files from the destination:
- Open documents and move through multiple pages.
- View original-size images rather than relying on thumbnails.
- Play videos through different timestamps and check audio.
- Test archives with their integrity or extraction function.
- Compare important files with known sizes, checksums, or backups when available.
Keep the source unchanged if important files are absent or damaged. A second method may interpret surviving metadata differently, and a professional lab may need the original device state.
Why recovered files can be incomplete
Corruption can affect metadata, file content, or both. A directory entry can point to clusters that no longer form a complete file. A signature scan can find a beginning without knowing every fragment that belongs to it. Later writes can replace only part of a file, producing an export that opens but fails at a later page or timestamp.
For that reason, a successful preview is useful evidence but not final proof. Preview several files and then validate exported originals with the software that normally uses them. Preserve multiple candidate versions when they differ; the one with a familiar name is not always the most complete.
Cases that need a different response
If BitLocker or another encryption layer protected the volume, recovery still requires the correct key or credentials. If the USB drive was used as boot media, an installer, or a multi-partition device, identify the relevant partition before scanning. If it came from a Mac or Linux system, connect it to Windows as a secondary device; XRecovery runs only on Windows even though it can scan supported file systems from those platforms.
Decide whether repair is appropriate
After recovery and backup, repair can be considered for a stable device. If CHKDSK, formatting, or repartitioning is used, treat the result as a test of future usability, not proof that the flash memory is healthy. A USB drive that became RAW without an explained interruption should not hold the only copy of important data.