How to Recover Data from an External Hard Drive

Yvette Bonnet updated Jul 10, 26

5 min(s)

TL;DR:

Recovering data from an external hard drive requires immediately halting all new data writes to prevent permanent overwriting and extracting the lost files to a separate storage device using a tool such as Recoverit Hard Drive Recovery.
    ● Ignore all system prompts to format a RAW or corrupted partition and prioritize creating a disk image first to recover from if the drive connection is unstable or the scan freezes.
    ● Cease all software recovery attempts and seek professional diagnosis if the drive produces clicking sounds, smells burnt, overheats, or fails to appear in Windows Disk Management or Mac Disk Utility regardless of the cable or port used.
    ● Data locked behind encryption, password protection, or proprietary backup formats strictly requires the correct credentials and original software environment for successful retrieval.

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Data can often be recovered from an external hard drive if the drive is still detected, the files were deleted recently, or the partition was formatted by mistake. The safest approach is to stop writing new data, check whether the external HDD appears in the system, and choose a recovery method based on whether the issue is deletion, formatting, file system damage, or hardware failure.

Step 1
Stop using the external hard drive as soon as data loss is noticed. Avoid saving new files, formatting, running repair tools, or copying recovered data back to the same drive.
Step 2
Check basic detection first. Try another USB port, cable, adapter, power source, or computer. Open Disk Management on Windows or Disk Utility on Mac to see whether the drive appears, even if files are not accessible.
Step 3
If the drive opens but files are missing, scan the external hard drive with recovery software and save recovered data to a different storage device.
Step 4
If the drive asks to format, shows as RAW, or reports corruption, do not confirm format prompts. Recover files or create a disk image first, then consider file system repair only after important data is copied elsewhere.
Step 5
Stop software attempts if the drive clicks, smells burnt, disconnects repeatedly, overheats, or is not detected at all. These symptoms can indicate hardware damage that needs professional diagnosis.

Common Issues and Fixes

External hard drive not showing up: likely cause is a bad cable, weak power, failed port, or enclosure issue; fix: test another cable, port, powered connection, or computer.
Drive detected but files are missing: likely cause is accidental deletion, hidden files, or damaged file records; fix: check visibility settings and run a recovery scan before writing new data.
Drive asks to format before use: likely cause is a damaged file system or RAW partition; fix: avoid formatting and scan the full disk or a disk image first.
Scan is very slow or freezes: likely cause is bad sectors, unstable connection, or failing hardware; fix: use a stable direct connection and consider imaging the drive before repeated scans.
Recovered files will not open: likely cause is partial overwrite, missing fragments, or file corruption; fix: preview files when possible and recover alternate versions if found.

Quick Tips

Recovery results are usually better when no new data has been written to the external HDD after file loss.
Saving recovered files back to the same external hard drive can overwrite remaining recoverable data.
Encryption, password protection, or proprietary backup formats may require the correct credentials or original software environment.
If warranty, insurance, business data, or sensitive files are involved, check handling rules before opening the drive or replacing hardware parts.

💡Protip:

If an external hard drive is unstable but still readable, create a disk image first when possible and recover from the image instead of repeatedly scanning the original drive.