Guide
Drive failed or files disappeared? What to do (and not do) in the first hour
What you do — or don't do — right after realizing a drive is failing or files are missing has more effect on whether that data is recoverable than almost anything that happens afterward.
Data loss situations are unusual in that the most important decisions happen in the first few minutes, almost always before anyone with actual recovery experience is involved. That's because the instinctive response — try again, restart it, run a repair tool, see if it fixes itself — is often the exact thing that turns a recoverable situation into one that isn't. This guide is about what to stop doing, more than what to try.
Stop using the drive immediately
This is the single most important thing on this page. If a drive is clicking, grinding, failing to mount, or throwing errors, every additional read or write to it is a chance to turn recoverable data into unrecoverable data — especially if the failure is mechanical rather than logical. Continuing to use a failing drive, or repeatedly restarting the computer hoping it'll "catch" this time, is the most common way a recoverable situation gets worse. If you can safely shut the machine down and leave it off, do that and stop there.
Don't install recovery software onto the same drive
A common, well-intentioned mistake: downloading a data recovery program and installing it directly onto the drive that's having problems. Every file written to a drive — including the recovery tool's own installation files — can overwrite the exact data you're trying to get back, particularly in the case of accidentally deleted files, where the original data often still physically exists on the drive until something else writes over it. If you're going to try any software approach, it needs to run from a different drive entirely, targeting the problem drive only as a destination to read from, not write to.
Don't open a physically damaged drive yourself
If a drive was dropped, exposed to water, or shows physical damage, opening the enclosure or the drive itself outside of a controlled environment introduces dust and static risk that can turn a mechanical problem that was recoverable into one that isn't. This is one of the clearest lines between "safe to try yourself" and "needs a professional" on this entire page.
Don't keep repeating the action that triggered the problem
If a specific action seemed to cause the issue — an update that was interrupted, a drive that was unplugged while in use, a laptop that was dropped — repeating that action or forcing the same process again "to see if it works this time" rarely helps and often compounds the damage. Once something has gone wrong, the priority shifts to stopping further change to the drive, not retrying the thing that broke it.
What is reasonable to do while you decide next steps
- Note exactly what happened right before the problem started — an update, a drop, a power outage, an accidental deletion — since that detail meaningfully narrows down what's actually wrong.
- If the drive is external and removable, safely disconnect it rather than continuing to plug and unplug it while troubleshooting.
- Check whether the data might already exist somewhere else — a cloud backup, an email attachment, a shared drive, a second device it was also saved to — since sometimes the "lost" copy isn't actually the only copy.
- Resist the urge to try several different recovery tools in sequence "just in case" — each one is a chance to make things worse, and it's better to make one deliberate decision than several rushed ones.
Why we don't walk through DIY recovery steps here
Whether a given drive should be worked on with software, opened for a hardware-level attempt, or left completely alone depends on exactly what failed and how — a logical issue and a mechanical failure call for opposite approaches, and guessing wrong is how a recoverable drive stops being recoverable. That's a diagnose-first situation, not a checklist to follow blind. It's also why an honest assessment matters more than a fast one here.
Drive acting up or files missing right now?
Stop using the drive if you haven't already, then tell us what happened and where you're located — we'll follow up to schedule an assessment. See our data recovery page for how the assessment and recovery process works.
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