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uk Technology & digital loss disk errors warning • hard drive error alert • ssd error warning • repair disk prompt • disk repair might erase data • file system corruption message • drive might be failing • windows wants to scan and repair • mac disk utility first aid warning • chkdsk prompt • startup disk needs repair • disk check found errors • bad sectors warning • storage device failing • protect files before repair • urgent backup before disk fix • computer says drive error • save data from failing drive

What to do if…
your computer warns of disk errors and offers a repair that could risk data loss

Short answer

Pause the repair and prioritise getting a copy of your important files to another device first. Repairs can change or remove damaged data, so treat this as a “copy-first” situation.

Do not do these things

  • Don’t click “Repair/Fix now” (or run a repair tool) before you’ve copied what you can.
  • Don’t keep using the computer for normal work (downloads, installs, updates, lots of browsing) — extra writing can make recovery harder.
  • Don’t “tidy up” by moving/renaming masses of files or running cleanup/defrag tools.
  • Don’t repeatedly reboot over and over if it keeps failing the same way — stop and switch to copying data.
  • Don’t open lots of large files (especially videos/photos) “to check they’re OK” — that can stress a failing drive.

What to do now

  1. Stop new writing immediately. Save only what’s open and essential, then close apps. If you can, keep the computer plugged into power so it doesn’t die mid-copy.
  2. Choose “Skip/Cancel/Not now” on the repair prompt (or close it) and focus on copying data first.
  3. Connect a destination that won’t be touched by the repair (an external USB drive or another computer with enough space). Don’t copy onto the same internal disk.
  4. Copy the irreplaceable things first, in this order: work/documents, photos, passwords/2FA backup codes, finance/tax files, project folders, email archives.
    • If copying errors appear, skip that file/folder and keep going (you’re trying to rescue what you can, not make it perfect).
  5. If the drive is making unusual sounds, becomes extremely slow, or files vanish: stop heavy copying and switch to fewer, smaller, most-important items only. If it’s physically failing, pushing it hard can finish it off.
  6. If you have a Mac and the warning involves Disk Utility “First Aid”: copy first if you can.
    • If you can’t boot normally, you may still be able to copy files to another Mac using Apple-supported transfer options before you run repairs (for example Share Disk from macOS Recovery on Apple silicon Macs, or Target Disk Mode on some Intel Macs).
  7. After you have a backup you trust, run one repair attempt using the built-in tool your system is offering. If it reports it can’t repair or the warning returns quickly, treat the disk as unreliable.
  8. Plan for replacement. If the system indicates the disk is failing, replacing the drive (or the whole device) is often the real fix — repairs can’t make failing hardware “healthy”.
  9. If the computer is under warranty / recently bought: pause DIY fixes after you’ve backed up data and contact the retailer/manufacturer. In the UK, your contract is usually with the retailer for faulty goods, and you may have repair/replace/refund rights depending on timing and circumstances.

What can wait

  • You don’t need to decide today whether to reinstall the operating system, wipe the disk, or upgrade hardware.
  • You don’t need to “prove the cause” (software vs hardware) right now — focus on getting a safe copy of files first.
  • You don’t need to organise or deduplicate your backup during the panic moment.

Important reassurance

Disk-error warnings are common, and the right first move is simply to protect your data before trying to “fix” anything. Even if some files won’t copy, rescuing the most important items first is a meaningful win.

Scope note

This is first steps only — once your files are safe, you can take time to troubleshoot, replace hardware, or get professional help if needed.

Important note

This is general information, not professional IT or legal advice. If the disk contains sensitive or business-critical data, or the device is still in a support/warranty period, consider using official support channels or a reputable data recovery professional rather than repeated repair attempts.

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