Recover Data from a USB External Hard Disk
A USB external hard disk or external SSD is often used to store photos, videos, documents, backups, and work files. If files are deleted, the drive asks to be formatted, or Windows no longer shows the volume correctly, the most important step is to stop using the drive immediately. New files, formatting, or repair operations can overwrite lost data and make recovery much harder.
Important: Do not format the USB external hard disk, do not run CHKDSK, do not create a new partition, and do not save recovered files back to the same drive. Recover files to another healthy disk instead.
Free Data Recovery Policy
Lazesoft Data Recovery Home Edition is free for home users. Home users can recover data from a USB external hard disk, external SSD, USB flash drive, memory card, or other personal storage device without a recovery size limit.
Professional and business users can recover up to 1TB of data for free. This gives technicians, IT support users, and business users a practical way to scan the USB external hard disk, check the recovery result, and recover important files before purchasing a license if more capacity or commercial use is needed.
The free policy applies to data recovery software use. For the safest result, always save recovered files to another healthy disk, not back to the problem USB external hard disk.
Check the USB Connection Before Starting Recovery
A loose cable, weak USB power, unstable hub, or poor USB adapter can make an external hard disk disappear during a scan. Before you start recovery, connect the drive in the most stable way possible. A stable connection does not repair lost files, but it helps prevent the scan from being interrupted.
USB 2.0, USB 3.0, USB 3.1, and USB-C ports
USB 3.0, USB 3.1, USB 3.2, and USB-C ports are usually faster than USB 2.0, so they are a good choice for scanning a large external hard disk. However, if an older external hard disk enclosure disconnects, freezes, or is detected only sometimes on a USB 3.x port, try a USB 2.0 port. USB 2.0 is slower, but it can sometimes be more stable with older USB-to-SATA bridge chips.
Front USB port vs back USB port
On a desktop computer, the back USB ports are usually connected directly to the motherboard and are often more stable than the front case USB ports. If the external hard disk is not detected, disconnects during scanning, or makes repeated spin-up/spin-down sounds, try a back USB port first. Front USB ports are convenient, but the internal cable or power quality may not be ideal for an external hard disk.
Avoid unpowered USB hubs when recovering data
For recovery work, connect the external hard disk directly to the computer whenever possible. Avoid unpowered USB hubs, monitor USB ports, keyboard USB ports, and long extension cables. They may not provide enough stable power, especially for portable 2.5-inch external hard disks. If you must use a hub, use a powered USB hub with its own power adapter.
Check the cable, adapter, and enclosure
A damaged USB cable or loose Type-C adapter can cause read errors or sudden disconnection. Try a short, good-quality USB cable and avoid moving the drive while scanning. If the disk was removed from another external enclosure, make sure the USB-to-SATA adapter or docking station supports the disk size and is working correctly.
External hard disks with separate power input
Many 3.5-inch external hard disks need a separate power adapter. Connect the power adapter first, wait for the disk to spin up, and then connect the USB cable to the computer. Use the correct original power adapter when possible. A wrong or weak power adapter can make the disk appear and disappear, fail to spin up, or make unusual sounds.
When to stop testing the connection
If the external hard disk clicks loudly, scratches, spins up and down again and again, or becomes very hot, stop repeatedly reconnecting it. These signs may indicate a physical disk problem. Repeated power cycles can make damage worse. For very important files, consider a professional data recovery service before trying more software recovery.
Common USB External Hard Disk Data Loss Situations
1. Files were deleted from the external hard disk
If files were deleted and the external hard disk still appears normally in Windows, recovery is usually easier. Connect the USB external hard disk to a working computer, install Lazesoft Data Recovery on the computer's internal drive or another safe disk, and scan the external drive for deleted files.
2. Windows asks you to format the drive before using it
If Windows shows a message such as “You need to format the disk before you can use it”, the file system or partition information may be damaged. Do not click Format. Use a recovery scan first to search the disk for lost files and lost partitions.
3. The external hard disk appears in Disk Management but not File Explorer
Open Computer Management > Disk Management. If the physical disk is listed at the bottom but no readable volume appears at the top, the drive may have partition table or file system damage. Do not initialize the disk, create a new volume, assign a drive letter, or format it. Scan it with data recovery software first.
4. The external hard disk is not detected at all
If the drive does not appear in Disk Management, try another USB port, another USB cable, and another computer. For a 3.5-inch external hard disk, also check the power adapter. If the disk still cannot be detected, makes clicking noises, spins down repeatedly, or has been dropped, it may have a physical problem. In that case, stop testing and contact a professional data recovery service.
How to Recover Files from a USB External Hard Disk
- Disconnect the drive if you are not ready to recover. This helps prevent Windows or other software from writing new data to it.
- Connect the USB external hard disk to a working Windows computer. Prefer a back motherboard USB port on a desktop computer. Use USB 3.x for speed when it is stable, try USB 2.0 if the drive disconnects, avoid unpowered hubs, and connect the separate power adapter first if the external hard disk requires one.
- Download and install Lazesoft Data Recovery. Home users can use the Home Edition for free. Professional and business users can recover up to 1TB of data for free. Install the software on the computer's internal drive or another healthy disk, not on the problem external hard disk.
- Start the Data Recovery module. Choose the recovery option that best matches the problem, such as deleted file recovery, formatted drive recovery, or partition recovery.
- Select the USB external hard disk or the lost partition. Make sure you select the correct disk before scanning.
- Scan the drive for lost files. A quick scan may find recently deleted files. If the file system is damaged or the first scan does not find what you need, run a deeper scan.
- Preview and select the files you want to recover. Check important documents, photos, videos, and folders before recovery.
- Save recovered files to another disk. Never save recovered files to the same USB external hard disk until all important data has been recovered and verified.
You can download the recovery tool from the Lazesoft download page. For more detailed product steps, see the basic data recovery steps and the guide for recovering data from a formatted or damaged partition.
What Not to Do Before Recovery
- Do not format the drive, even if Windows asks you to.
- Do not initialize the disk in Disk Management.
- Do not run CHKDSK or disk repair tools before recovering important files.
- Do not copy new files to the external hard disk.
- Do not recover files back to the same external hard disk.
When Software Recovery May Not Be Enough
Data recovery software is designed for deleted files, formatted partitions, damaged file systems, and lost partitions. It cannot repair a physically failed disk. If the external hard disk is making unusual noises, is not detected by multiple computers, has a burnt smell, or disconnects constantly, stop using it and consider a professional data recovery lab.
FAQ
Is Lazesoft Data Recovery free for USB external hard disk recovery?
Yes. Lazesoft Data Recovery Home Edition is free for home users. Professional and business users can recover up to 1TB of data for free before purchasing a license if more capacity or commercial use is needed.
Can I recover files after accidentally formatting a USB external hard disk?
Yes, in many cases files can still be recovered after a quick format, as long as new data has not overwritten the old files. Stop using the drive and scan it as soon as possible.
Can I recover data if the drive shows as RAW?
A RAW drive usually means Windows cannot read the file system. Do not format the drive. Use data recovery software to scan the disk and copy recoverable files to another location.
Where should I save the recovered files?
Save recovered files to another healthy disk, such as your computer's internal drive or a different external drive. Saving files back to the problem drive can overwrite data that has not yet been recovered.
Lazesoft Recovery Suite is an easy-to-use recovery toolkit for recovering data, repairing crashed Windows systems, resetting forgotten Windows passwords, cloning disks, and creating backups.