Dysk i Spółka • Data Recovery Laboratory
HDD recovery guides
Guides focused on HDD failures: clicking sounds, RAW partitions, CRC errors, dropped drives and the first safe steps before laboratory diagnostics.
Practical articles about HDD symptoms, common user mistakes, and the safest path from the first error message to professional diagnosis.
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Most-read HDD and disk failure guides
Start with the articles below if your drive clicks, shows as RAW, disappears from the system or throws copy/read errors.
- Damaged HDD — what NOT to do: 5 mistakes that destroy your dataDamaged HDD? Learn which five mistakes destroy recovery chances, why they are risky and what to do instead to avoid making the damage worse.
- Drive failure with accounting/HR data — how to combine data recovery with GDPR obligationsWhat to do when a drive with accounting or HR data fails. Safe first steps, GDPR-aware handling and professional data recovery support in Warsaw.
- Data error (CRC) while copying files — how to work around it and recover dataData error (CRC) while copying files usually points to read instability. See what it means, what not to do and how to protect the files.
- "Unknown, uninitialised disk" — should you initialise it? (Guide)Diagnostics: look at the drive capacity — "Unknown, uninitialised disk" — why did the drive disappear, and is it safe to initialise it?
- Drive will not start – black screen: failure diagnosis and step-by-step guidance to avoid disaster.Welcome to our guide to a problem many computer users may face: a drive that will not start and a black screen.
- RAW drive – why you should NOT click "Format" and what it meansRAW drive and a format prompt? Learn why the system shows it and when you should stop all attempts to avoid making recovery harder.
- RAW drive after a power outage – what happened to the data?RAW drive after a power outage? See why the file system may break and which actions are safe if the data still matters.
- RAW drive after being connected to another computer – what went wrong?When a drive starts throwing errors, shows up as RAW or freezes the computer, the key is to stop all writes and avoid actions that overwrite data.
- A drive appears as RAW and asks to be formatted? Do NOT click "Yes" — emergency guide (Warsaw)RAW drive asking to be formatted? Do not click Yes. Learn what the message means and which steps protect the data before recovery.
- External USB drive as RAW – why the system cannot see itExternal USB drive shown as RAW? Learn why the system cannot read it and which first steps are safest before further testing.
- The drive clicks when the computer starts – what it means and when to stop immediatelyWhat a clicking HDD usually means, why it is not a software problem and when you must stop trying to boot the drive to protect the data.
- Strange sounds coming from a drive? Symptoms of mechanical HDD failure (clicking, knocking)Hard drives (HDDs) normally operate quietly, so when they start making strange noises, it should raise concern.
- "The drive needs to be formatted" — what does this message mean?"You need to format the disk" message? Do not click format. Learn what it means and which steps protect the data before diagnostics.
- External drive disconnects while copying — causes and next stepsWhen an external drive disconnects during copying, the system usually loses a stable connection with the device.
- How to recover data from a damaged HDD?Learn which first steps are safe after HDD damage, when to stop powering the drive on, and how to improve the chance of recovering important data.
- Computer does not see the external drive? The LED is on but the drive is missing? See what to do.External drive not detected? See what LED activity, RAW state, slow response or disconnects can mean before you try more live fixes.
- Do not format the device "because I will recover it later with software"Do not format the device if you want to recover data later. Expert guide from Dysk i Spółka on the safe next steps after data loss.
- Do not install recovery software on the same driveLearn why installing recovery software on the same drive can overwrite files, and which safer first steps improve the chance of getting data back.
- Do not open a hard drive at homeWhy opening an HDD outside cleanroom conditions is dangerous, what contamination does to the platters and when only laboratory work makes sense.
- Do not use CHKDSK / "repair file system" if the drive is damagedIn data recovery labs we often hear the same story: the drive was already in trouble, and after CHKDSK the situation became far worse.
- Damaged HDD – what to do, and what absolutely not to do?How to diagnose a damaged HDD? HDDs are still popular data storage devices, but their failures can mean losing priceless files.
- "I/O Device Error" on WD Passport drives — diagnosis and repair | Dysk i SpółkaWD My Passport I/O Device Error? See what this message may indicate and why diagnosis often involves the USB bridge, drive or firmware.
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