Connect the drive and check if Windows or Mac recognizes it
Plug the external hard drive into a USB port on your computer. Wait 10 to 15 seconds for the operating system to detect it. On Windows, the drive should appear in File Explorer under "This PC" within a few seconds. On Mac, it will show up on the desktop or in Finder's sidebar under "Locations".
If the drive appears and you can see folders and files, you can move to the next section. If nothing shows up after 30 seconds, try a different USB port on your computer—some ports deliver more power than others, and external drives sometimes need it. If you have a USB hub, plug the drive directly into the computer instead; hubs can cause detection problems.
If the drive still does not appear, the issue may be a damaged cable, a failed connection port on the drive itself, or a problem with the drive's internal storage. These are covered in later sections.
Key Takeaways
- A working external drive appears in File Explorer (Windows) or Finder (Mac) within seconds of plugging in, and you can copy files by dragging them to your computer.
- If the drive does not show up, try different USB ports and avoid USB hubs before assuming the drive has failed.
- A drive that appears but shows no files, or shows corrupted file names, may have a file system problem that requires repair tools or professional recovery.
- If the drive makes clicking, beeping, or grinding sounds, stop using it when ready—these are signs of physical damage that will worsen with continued power.
- Recovery software can sometimes retrieve files from a drive that no longer appears in the operating system, but success depends on what went wrong inside.
Copy files from a working drive to your computer
Once the drive appears in File Explorer or Finder, open it by double-clicking. You will see folders and files stored on the drive. Select the files or folders you want to copy. On Windows, hold Ctrl and click each file to select multiple items, or press Ctrl+A to select everything. On Mac, hold Command and click, or press Command+A.
Right-click the selected files and choose "Copy" (Windows) or "Copy" (Mac). Navigate to the folder on your computer where you want to store them—your Documents folder, Desktop, or a new folder you create. Right-click in the empty space and choose "Paste". The files will copy to your computer. The time this takes depends on file size; large video files or photo libraries may take several minutes.
Do not unplug the drive while files are copying. Wait for the progress bar to finish and the status to show "Complete" before disconnecting. On Windows, you can also right-click the drive in File Explorer and choose "Eject" to safely disconnect it. On Mac, drag the drive icon to the Trash or click the eject icon next to its name in Finder.
What to do if the drive appears but shows no files
If the drive connects and appears in File Explorer or Finder, but the folders inside are empty or you see only a few files when you know there should be more, the file system may be corrupted or the files may be hidden. First, try to show hidden files. On Windows, open File Explorer, click the "View" tab at the top, and check the box for "Hidden items". On Mac, open Finder, press Command+Shift+Period (the period key), and hidden files will appear.
If hidden files do not reveal your data, the drive's file system may need repair. On Windows, right-click the drive in File Explorer, choose "Properties", click the "Tools" tab, and select "Check". Windows will scan the drive and attempt to fix errors. On Mac, connect the drive, open Disk Utility (search for it in Spotlight), select the drive from the list on the left, and click "First Aid". Mac will run a repair scan.
If repair tools do not recover your files, the data may still be on the drive but the file system is too damaged for the operating system to read. This is when recovery software becomes necessary, covered in the next section.
Use recovery software when the drive is not recognized
If the drive does not appear in File Explorer or Finder at all, or if repair tools did not recover your files, recovery software can sometimes read the drive's raw storage and extract files. Common options include EaseUS Data Recovery Wizard (Windows and Mac, free version available), Recuva (Windows, free), and DiskDrill (Windows and Mac, free version available). These programs scan the drive's storage directly, bypassing the file system.
read and install the recovery software on your computer, not on the external drive. Connect the external drive and launch the program. Select the external drive from the list of available devices. Start a scan—this can take 30 minutes to several hours depending on drive size. Once the scan finishes, the software will show a list of files it found. Select the files you want to recover and choose an output location on your computer (not the external drive). Click "Recover" and wait for the process to finish.
Recovery software works best on drives that have failed recently or have minor file system damage. It is less effective on drives with physical damage or those that have been overwritten with new data. Success is not may provide, and the recovered files may have corrupted names or missing data.
Recognize physical damage and when to stop trying
If the external drive makes sounds, stop using it when ready. A clicking sound usually means the read head inside the drive is hitting the spinning platter—a sign of mechanical failure. A beeping sound often indicates the drive's circuit board is failing. A grinding or whirring sound means internal parts are rubbing or misaligned. Continuing to power on a drive with these symptoms will cause more damage and make professional recovery harder or impossible.
Other signs of physical damage include the drive getting very hot, the computer not recognizing it even after trying multiple ports and cables, or the drive appearing and disappearing randomly. If you see any of these, do not attempt recovery software—the drive needs professional attention.
Professional data recovery services can sometimes retrieve files from physically damaged drives, but the cost is usually $300 to $3,000 depending on the damage and the amount of data. Recovery is not may provide. If the data on the drive is not critical or irreplaceable, it may not be worth the cost.
Try a different cable or port if the drive is not detected
Before concluding the drive has failed, test with a different USB cable. The cable connecting the drive to your computer can wear out, fray, or develop internal breaks that prevent power or data from flowing. Borrow a cable from another external drive or purchase a replacement USB cable that matches your drive's connector type (usually USB-A to Micro-USB or USB-C). Plug the drive in with the new cable and wait 15 seconds to see if it appears.
If a different cable does not work, try every USB port on your computer, including ports on the back of a desktop tower if you have one. Some ports deliver more power than others, and a drive that does not respond on one port may work on another. Avoid USB hubs, docking stations, and keyboard USB ports—these often do not provide enough power for external drives.
If the drive still does not appear after trying multiple cables and ports, the drive's internal connection or storage is likely damaged. At this point, recovery software or professional recovery is the only remaining option.
Understand what recovery software can and cannot do
Recovery software reads the raw storage on the drive and looks for file signatures—patterns of data that mark the beginning and end of photos, documents, videos, and other file types. It does not need the file system to be intact. This is why it can sometimes retrieve files from a drive that the operating system cannot recognize.
However, recovery software cannot retrieve data from a drive with physical damage, such as a failed read head or damaged circuit board. It also cannot retrieve data that has been overwritten—if new files have been written to the same storage location, the old data is gone. Recovery is most successful on drives that have been recently disconnected or have minor file system corruption.
The recovered files may have generic names like "File001.jpg" instead of their original names, and some files may be partially corrupted. This is normal and does not mean the recovery failed—it means the file system information was lost, but the file data itself survived.
Frequently Asked Questions
Can I recover files from a drive that was formatted?
Yes, recovery software can often retrieve files from a formatted drive because formatting only erases the file system, not the actual data. The data remains on the storage until it is overwritten. The sooner you stop using the drive and run recovery software, the better your chances.
What if the drive shows up but is very slow to open files?
Slowness usually means the drive is failing or the connection is unstable. Try copying files to your computer as soon as possible rather than working directly from the drive. If the drive becomes unresponsive, disconnect it and do not use it again until you have recovered the data you need.
Do I need to remove the drive from its case to recover files?
No. Opening the external drive case will void any warranty and expose the internal drive to dust and damage. Try all software and cable options first. Only a professional data recovery service should open the case.
Will recovery software work if the drive is making clicking sounds?
No. Clicking sounds indicate physical damage inside the drive. Running recovery software or continuing to power on the drive will make the damage worse. Stop using it when ready and contact a professional recovery service if the data is critical.
How long does it take to recover files from an external drive?
A recovery scan can take 30 minutes to several hours depending on the drive's size and the type of damage. Copying recovered files to your computer takes additional time based on how much data you are retrieving. Plan for several hours if you are recovering a large amount of data.