Data loss: what not to do if the files matter

The hardest moment after data loss is the first decision. A person in Warsaw loses photos, a company share disappears, a laptop asks to format a disk, and the instinct is to click something quickly. If the files matter, slow down. The wrong repair attempt can do more harm than the original failure.

Do not keep powering the device on

Repeated power cycles are risky when an HDD clicks, an SSD disappears, or an external drive freezes the system. Each attempt can add stress or change the device state.

Do not format, initialize or create a new partition

RAW and uninitialized messages are not invitations to rebuild the volume. Formatting and GPT/MBR initialization write new metadata over a layout that may still help recovery.

Do not run CHKDSK on a possibly damaged drive

CHKDSK repairs file-system structures. On unstable media, it can alter the MFT, move entries and make later analysis harder. Use it only when the hardware is known to be healthy and the data is not at risk.

Do not install recovery software on the source

Installers, temporary files and recovered output can overwrite deleted data. On SSD/NVMe media, TRIM may also remove references quickly. If software is appropriate, run it from another disk and save results outside the source.

Do not open an HDD at home

Dust, fingerprints and improvised tools can damage platters. If the drive has mechanical symptoms, keep it powered off and note the sound instead of opening the enclosure.

Do not rebuild RAID without a plan

RAID recovery depends on disk order, member health and metadata. A rebuild on the wrong disk or after a second drive error can overwrite useful parity and make reconstruction harder.

Do not trust an unverified backup

Before experimenting, check whether the backup actually contains the current files and opens on another device. A stale or damaged backup is not a safety net.

What to do instead

1. Stop writes to the device or array.
2. Write down messages, sounds, capacity and what happened before failure.
3. List the most important folders or applications.
4. Keep disk order and labels in RAID/NAS cases.
5. Ask for a diagnosis before another repair attempt changes the evidence.

Which guide fits your case?

Use RAW drive: do not format for format prompts, do not use CHKDSK for repair warnings, and do not install recovery software on the same drive if files were deleted or lost after formatting.