Mac Not Recognizing Usb Hard Drive

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Mac Not Recognizing Usb Hard Drive

Mac Not Recognizing Usb Keyboard
Mac Not Recognizing External Drive
Mac Not Recognizing Usb Mouse
Mac Not Recognizing Usb Device
Mac Not Recognizing Usb Hard Drive
I restarted the MAC and it still won't recognize it - I've tried eSATA, USB, firewire- and nothing. The hard drive was all 3 connections. So, I tested the HD on a friend's MacBook Pro and the hard drive is recognized without any hesitation and it works fine. So, there is nothing wrong with the Hard Drive - its my MacBook that won't recognize it. A forceful pull out can easily damage the Flash drive and could be a possible reason why your Mac not recognizing USB. You must follow a proper way of ejection of the Flash drive. Before removing the Flash drive from the port, request for a safe ejection procedure. Hard Drives Mobile Drive. If you have followed all of these steps and the drive is still not recognized, shut down your computer, wait 3 to 5 minutes, restart your computer and try again. In the event that the drive is still not recognized, take the drive to another computer and attempt to connect the drive. At this point I assumed I had a broken hard drive cable. As one last ditch effort, I tried plugging in the old thought-to-be-damaged hard drive into into an external USB SATA dock. To my surprise it was detected by the OS when doing an 'Option' boot and I was able to load OS X. From there the OS could see the internal SSD drive I had installed. The components that convert that SATA drive into USB can fail, meaning the drive could be just fine if you connect it some other way. If you have a desktop PC available, you can open it up and plug.
Summary: While trying to access data from a USB drive, you may get an error 'USB Device not recognized: One of the devices attached to this computer has malfunctioned and windows does not recognize it'. Do you want to know the reasons & solutions for this issue continue read this blog.
There could be many factors that can lead to this issue, such as:
Corrupt or unstable USB driver
Windows is missing important updates
USB controllers may have become unstable or corrupt
Corrupt USB drive or partition
However, you can still fix the issue and extract the files from the USB drive with the help of the solutions provided in this post. In the worst-case scenario, you may have to format the drive to make it usable again and lose the data that was on the USB drive to circumvent the device not recognized error. Therefore, we have also mentioned how you can recover your data from a formatted, damaged, corrupt, and inaccessible hard drives.
Solution 1: Restart
A simple reboot can fix a lot of issues including the 'USB Device not recognized' issue. Unplug your USB drive, shut down the system, and then remove the power cord from the power supply as the modern systems don't go off completely and the motherboard still gets power.
Then connect the power supply, boot the system, and plug in your USB drive. Check if it's recognized and you are able to access the drive via File Explorer.
Solution 2: Try Different PC
Try connecting your USB drive to a different PC. If the drive doesn't work on the second PC, the USB drive could be damaged or corrupt. You can try to repair USB drive by formatting but that'll lead to data loss. Read on to know how to handle data loss situation in such case.
Solution 3. Re-Install USB Drivers
Corrupt or unstable USB drivers can sometimes cause severe problems. The current issue you are facing could be a problem with the USB drive drivers. You can fix this by re-installing the USB drive drivers using Device Manager. Follow these steps to fix the issue:
Press ‘Windows+S' and type Device Manager.
Click on ‘Device Manager' from the results.
Double-click on Universal Serial Bus controllers. Then right-click on the USB drivers and select Uninstall. You can do this for all other listed USB drivers.
After uninstallation, restart your system. The drivers are automatically installed by Windows and this possibly fixes the USB drive not recognized the problem.
Solution 4: Unplug all connected USB devices
Sometimes too many connected USB devices on the same machine create conflict that can stop other USB devices from functioning.
You can simply unplug all connected USB devices and then connect the USB drive to check if that solves the issue and you are able to access the files.
Solution 5. Fixing USB Root Hub
Open Device Manager and double-click the 'Universal Serial Bus controllers' option.
Right-click on USB Root Hub and select Properties.
Click Power Management tab and uncheck ‘Allow the computer to turn off this device to save power' option. Then click ‘OK' to save changes.
Restart the system and plug in the UBS drive to check if you are able to access the drive via File Explorer.
Solution 6. Using a Software Tool
Mac Not Recognizing Usb KeyboardIf the above-mentioned solutions didn't work for you, you can rely on a safe, reliable, and secure data recovery software—such as Stellar Data Recovery- Standard—that helps you recover data from such a USB drive that is not recognized by the system.
The Stellar Data Recovery- Standard for Windows recovers data from a corrupt, logically damaged, formatted, and even from a re-formatted USB drive. Follow these steps to recover data from your USB drive that is not recognizable and fix the drive after recovery:
Download and install the Stellar Data Recovery- Standard on your PC.
Plug in the USB drive and launch the program.
Select what data you want to recover – office documents, files, folders, audio, pictures, videos, etc. You may click ‘All Data' to recover all file types.
Mac Not Recognizing External Drive

Mac Not Recognizing Usb Keyboard
Mac Not Recognizing External Drive
Mac Not Recognizing Usb Mouse
Mac Not Recognizing Usb Device
Mac Not Recognizing Usb Hard Drive
I restarted the MAC and it still won't recognize it - I've tried eSATA, USB, firewire- and nothing. The hard drive was all 3 connections. So, I tested the HD on a friend's MacBook Pro and the hard drive is recognized without any hesitation and it works fine. So, there is nothing wrong with the Hard Drive - its my MacBook that won't recognize it. A forceful pull out can easily damage the Flash drive and could be a possible reason why your Mac not recognizing USB. You must follow a proper way of ejection of the Flash drive. Before removing the Flash drive from the port, request for a safe ejection procedure. Hard Drives Mobile Drive. If you have followed all of these steps and the drive is still not recognized, shut down your computer, wait 3 to 5 minutes, restart your computer and try again. In the event that the drive is still not recognized, take the drive to another computer and attempt to connect the drive. At this point I assumed I had a broken hard drive cable. As one last ditch effort, I tried plugging in the old thought-to-be-damaged hard drive into into an external USB SATA dock. To my surprise it was detected by the OS when doing an 'Option' boot and I was able to load OS X. From there the OS could see the internal SSD drive I had installed. The components that convert that SATA drive into USB can fail, meaning the drive could be just fine if you connect it some other way. If you have a desktop PC available, you can open it up and plug.
Summary: While trying to access data from a USB drive, you may get an error 'USB Device not recognized: One of the devices attached to this computer has malfunctioned and windows does not recognize it'. Do you want to know the reasons & solutions for this issue continue read this blog.
There could be many factors that can lead to this issue, such as:
Corrupt or unstable USB driver
Windows is missing important updates
USB controllers may have become unstable or corrupt
Corrupt USB drive or partition
However, you can still fix the issue and extract the files from the USB drive with the help of the solutions provided in this post. In the worst-case scenario, you may have to format the drive to make it usable again and lose the data that was on the USB drive to circumvent the device not recognized error. Therefore, we have also mentioned how you can recover your data from a formatted, damaged, corrupt, and inaccessible hard drives.
Solution 1: Restart
A simple reboot can fix a lot of issues including the 'USB Device not recognized' issue. Unplug your USB drive, shut down the system, and then remove the power cord from the power supply as the modern systems don't go off completely and the motherboard still gets power.
Then connect the power supply, boot the system, and plug in your USB drive. Check if it's recognized and you are able to access the drive via File Explorer.
Solution 2: Try Different PC
Try connecting your USB drive to a different PC. If the drive doesn't work on the second PC, the USB drive could be damaged or corrupt. You can try to repair USB drive by formatting but that'll lead to data loss. Read on to know how to handle data loss situation in such case.
Solution 3. Re-Install USB Drivers
Corrupt or unstable USB drivers can sometimes cause severe problems. The current issue you are facing could be a problem with the USB drive drivers. You can fix this by re-installing the USB drive drivers using Device Manager. Follow these steps to fix the issue:
Press ‘Windows+S' and type Device Manager.
Click on ‘Device Manager' from the results.
Double-click on Universal Serial Bus controllers. Then right-click on the USB drivers and select Uninstall. You can do this for all other listed USB drivers.
After uninstallation, restart your system. The drivers are automatically installed by Windows and this possibly fixes the USB drive not recognized the problem.
Solution 4: Unplug all connected USB devices
Sometimes too many connected USB devices on the same machine create conflict that can stop other USB devices from functioning.
You can simply unplug all connected USB devices and then connect the USB drive to check if that solves the issue and you are able to access the files.
Solution 5. Fixing USB Root Hub
Open Device Manager and double-click the 'Universal Serial Bus controllers' option.
Right-click on USB Root Hub and select Properties.
Click Power Management tab and uncheck ‘Allow the computer to turn off this device to save power' option. Then click ‘OK' to save changes.
Restart the system and plug in the UBS drive to check if you are able to access the drive via File Explorer.
Solution 6. Using a Software Tool
Mac Not Recognizing Usb KeyboardIf the above-mentioned solutions didn't work for you, you can rely on a safe, reliable, and secure data recovery software—such as Stellar Data Recovery- Standard—that helps you recover data from such a USB drive that is not recognized by the system.
The Stellar Data Recovery- Standard for Windows recovers data from a corrupt, logically damaged, formatted, and even from a re-formatted USB drive. Follow these steps to recover data from your USB drive that is not recognizable and fix the drive after recovery:
Download and install the Stellar Data Recovery- Standard on your PC.
Plug in the USB drive and launch the program.
Select what data you want to recover – office documents, files, folders, audio, pictures, videos, etc. You may click ‘All Data' to recover all file types.
Mac Not Recognizing External DriveClick Next. Select the USB drive from the Connected Drives list and then turn ON the Deep Scan toggle switch that appears at the bottom-left corner of the wizard.
Click Scan. Wait for few minutes to hours (depending on the disk size) until the data is scanned.
After the scan, in the left tree-view pane, all recovered files and folders are listed. You can use the search box present at the top-right corner of the software window to find, preview, and recover specific files or folders. Alternatively, you can click on the ‘File Type' tab to easily browse specific files via type and recover them.
Click the checkboxes of the files and folders that you need to recover and then click the ‘Recover' button. A pop up appears.
Mac Not Recognizing Usb MouseClick the ‘Browse' button to select the location where you want to save the recovered data. Make sure to select a different drive.
Mac Not Recognizing Usb DeviceWait for the process to complete. Again, it may take some time depending on the amount of data to be recovered. After recovery, format the USB drive to make it usable and move your recovered files to the formatted USB drive.
ConclusionMac Not Recognizing Usb Hard DriveUse S.M.A.R.T. – drive monitoring system that comes embedded with all modern drives (HDDs, SSDs). The monitoring system helps you to keep an eye on the disk health and take appropriate measures before it fails or gets damaged to avoid data loss. Turn on automatic Windows updates. Always check and install the latest available Windows updates and drivers for your hardware. You can visit the support site of your hardware provider and download the latest drivers and tools to keep your system clean and free from any instability. However, in a worst-case scenario, you can always trust Stellar Data Recovery- Standard tool and recover your precious data from not recognising USB device or any other storage device with FAT (FAT16, FAT32), NTFS, or exFAT file system.