• Mac Software To Repair External Hard Drive System

Mac OS Diagnostics The MacOS has great tools for testing hard drives. This program is called First Aid. Always backup your data before running First Aid scans of your hard drive. If there is a bad sector, any data that may have been accessible before running “Repair Disk” will likely become inaccessible once the bad sector is re-allocated. IBoysoft Mac Data Recovery is free external hard drive data recovery software, which can recover lost data from external hard drives that First Aid failed to repair and recover lost data from encrypted APFS external hard drives. What's more, when the disk is corrupted, formatted, unmountable, unreadable, or even erased, this software can still.

Disk Utility User Guide

Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have.

If you run First Aid on a disk, Disk Utility checks the partition maps on the disk and performs some additional checks, and then checks each volume. If you run First Aid on a volume, Disk Utility verifies all the contents of that volume only.

1. In the Disk Utility app on your Mac, choose View > Show All Devices.

   Note: If you’re checking your startup disk or startup volume, restart your computer in macOS Recovery, select Disk Utility in the macOS Utilities window, then click Continue. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD - Data).

2. In the sidebar, select a disk or volume, then click the First Aid button .

   If Disk Utility tells you the disk is about to fail, back up your data and replace the disk—you can’t repair it. Otherwise, continue to the next step.

3. Click Run, then click Continue.

   If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. You can click Show Details to see more information about the repairs. Otherwise, you may need to do one of the following.

   • If Disk Utility reports “overlapped extent allocation” errors, two or more files occupy the same space on your disk, and at least one of them is likely to be corrupted. You need to check each file in the list of affected files. Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.

     • If you can replace a file or re-create it, delete it.

     • If it contains information you need, open it and examine its data to make sure it hasn’t been corrupted.

   • If Disk Utility can’t repair your disk, or you receive a report that the First Aid process failed, try to repair the disk or partition again. If that doesn’t work, back up as much of your data as possible, reformat the disk, reinstall macOS, then restore your backed-up data.

If your Mac has a Fusion Drive and you see a flashing question mark or alert, see the troubleshooting section of the Apple Support article About Fusion Drive, a storage option for some Mac computers.

If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. For information about servicing your Mac, see Find out how to service or repair your Mac.

Jun 23, 2020 • Filed to: Answer Hard Drive Problems • Proven solutions

There are several times when our system works in a strange manner, making us wonder about the consequences, the major of them being data loss. To overcome this issue, the hard drive was widely used by people for backing up their data in a secure place. However, the hard drive is an electronic device itself is prone to physical compromise that may result in data loss that might be impossible to recover until you search for ways to do so.

This question can puzzle you. But here, you can get the answer. This article will walk you through how to recover data from an external hard drive and repair external hard drive not working.

• Part 1. How to Repair External Hard Disk Not Detected?
• Part 2. How to Recover Files from External Hard Drive Without Formatting
• Part 3. How to Fix External Hard Drive with Error Messages

Part 1 How to Repair External Hard Disk Not Detected?

If your external hard drive isn't recognized, you can take the following different solutions and steps to get the external hard disk error fixed.

Way 1 Check IDE / SATA to USB Connection:

1. Ground Yourself:
   It is important that before you open up any hardware, make sure you ground yourself for obvious reasons that include being shock resistant.
2. Install the Drive:
   Use an IDE / SATA data cable and a power connector to install the hard drive internally on your system. You can also try connecting the drive externally via USB.
3. Conclude the observations:
   The above two steps will help you determine whether or not the enclosure was the reason that you were not able to recognize your hard drive in the system. By this reconnecting technique, you will figure out if you need to narrow down the issue further.

If the external hard disk enclosure is not the issue, you need to dig further to find out the culprit by following up on another series of steps.

Way 2 Check the sound the hard drive is making:

Listen up to the sound that your connected hard drive is making. Are you able to hear it? If it is spinning you'll possibly know the sound.

• Compare the sound with failing hard drive sounds listed by Data Cent.
• Try figuring out the possible scenarios which cause the sound you hear.
• However, if there is no sound made by the hard drive, it is dead in all probability.
• This damage can be internal, due to the faulty printed circuit board (PCB).

Mac Software To Repair External Hard Drive System

If your drive is spinning but the system doesn't recognize your hard drive, follow the next series of steps to manually check the settings on your computer.

Way 3 Enter into BIOS:

Press the trigger key that could be [DEL], [ESC], [F2], [F10] or [F12], depending upon your system. Check out the list of the types of devices that are connected with your system. You can fetch this information under the BOOT menu or Advance menu of the system.

On Windows: If you are working on windows, here are the steps to check the devices connected:

1. Click the key combination [Windows] + [R] to launch 'Run'.
2. Open the Command Prompt by inputting cmd in the field, and then hit Enter.
3. Type 'diskpart' and press Enter to launch the diskpart.exe.
4. Type list volume in the diskpart menu to see the connected drive.

Way 4 Fix external hard drive by formatting

You can also directly use the diskpart.exe to repair external hard drive not detected. Here are the steps:

1. Once the diskpart.exe is launched, type 'select disk 0' and press Enter.
2. Type 'clean' and hit Enter. This input will entirely erase all data on the external hard drive.
3. Input 'create partition primary' and also the same, Enter.
4. Finally, click the 'x' icon at the upper right corner.

Notes: 0 means the drive letter of the external hard disk to be repaired. It can be also 1 or 2.

As we can see, to learn how to repair an external hard drive is handy as it helps in avoiding unprecedented circumstances about your data. For the ones keen to repair an external hard drive, we have multiple options, each catering to different issues and users. Therefore, you no longer need to worry if your Seagate or WD external hard drive not recognized.

Part 2 How to Recover Files from External Hard Drive Without Formatting

1. Recover External Hard Drive with Recoverit

A corrupted external hard drive can always bring about data loss, even if sometimes you repair it successfully. If you lost data on your external hard drive, unfortunately, don't worry! You still have the chance to get lost data back. To recover files from external hard drive, you can have a try Recoverit Data Recovery.

This external hard drive recovery software can help you recover data from an external hard drive no matter it is corrupted, dead, crashed, damaged, or not detected. Before external hard drive data recovery, Recoverit also allows you to preview the scanned files to make a selective recovery.

2. Watch the Video for External Hard Drive Recovery

This video can instruct you how to recover files from external hard drive without formatting. Just take one minute, and you can get the surefire way to retrieve data from hard disk on Windows or Mac.

3. How to Retrieve Data from External Hard Drive

To start external hard drive recovery, you should firstly get Recoverit Data Recovery free downloaded and installed on your computer. After the installation, connect the external hard drive to your Windows computer and then follow the next steps to regain the lost data from an external hard drive.

Step 1. Select external hard drive

Among all the hard drives which have been shown on the screen, please select the corrupted external hard drive and click the “Start” button to move forward.

Note: Please ensure that the selected external hard drive has been connected and can be recognized by the computer.

Step 2. Scan the external hard drive

Recoverit will start a quick scan on the undetected external hard drive. If the quick scan can't help you get the lost data, turn to the “All-around Recovery” mode. It can search for more files for you on the external disk.

Step 3. Recover data from external hard drive

Once the scan finishes, you can preview all the found data, select the wanted ones, and click “Recover” to restore the files from the external disk.

Part 3 How to Fix External Hard Drive with Error Messages?

While using your external hard drive, there has been observed an error message, which asks the user to format the hard drive. In these cases, it is recommended not to follow the instructions blindly and do some researches on your own. Some of the error messages are:

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While accessing the file:

While attempting to run chkdsk:

Commonly, a user will not able to understand what a RAW file system means, therefore, they may follow the critical step of formatting the data to solve the issue. However, if you understand the requirements of the system, you might solve without the loss of any data. A RAW file system is a file that the Windows cannot recognize. As a result, available drivers could not mount the file system to a drive. Maybe, the filesystem type or location on the disk is corrupted. When the Windows are unable to find these files, it prompts the user to format the data.

This usually happens because many users disconnect their hard drives without choosing the 'Safely Remove Hardware?' option. Here is a way to fix this issue without formatting your hard drive.

1. Use CMD for external hard disk check

• Press and hold Windows icon and R keys.
• Input 'cmd' and hit Enter in the pop-up window.
• Type 'chkdsk f: /f ' and hit Enter to begin the scan process.
• Upon completion, you can usually find the external hard disk errors fixed.

Generally speaking, the external hard drive errors can be repaired using CMD. What you should note is that regarding 'chkdsk f: /f ', the first f should be replaced with the drive letter of the external hard drive.

2. Access S.M.A.R.T Data

If there is any physical damage to your hard disk, S.M.A.R.T Data will help you quickly figure out the problems that are being faced. S.M.A.R.T stands for Self-Monitoring, Analysis, and Reporting Technology and is used to alert the impending failure of the drive. This technology gives the user a deadline that they require to save the data.

Functions of S.M.A.R.T:

• S.M.A.R.T helps the user to retrieve the data from the drive.
• Save your data and prevents the user from attempting absurd mistakes that make the situations worse.
• S.M.A.R.T Data also helps in determining whether the damage is physical or logical. In case of physical damage, save the important data at another safe location and replace your hard drive. However, if the damage is logical, you can trust the drive and use Recoverit Data Recovery to retrieve corrupted files after the repair.

If at any point in time, your hard drive reports that S.M.A.R.T health is not able to access the search or in anyways, FAILED, the primary step one must take is to save the data immediately as the drive is of no longer use.

3. Youtube Video Tutorial on How to Repair External Hard Drive

Follow these steps if you are wondering how to fix the external hard drive. However, if your problem is still not solved, there are chances that the PCB of your external hard drive is damaged. There are ways to replace your hard drive's PCB, but for your record, these methods are not recommended as they may cause further damage to the device.

Closing Words

Before looking for professional repairs, it is recommended that you repair the external hard drive on your own. And his detailed external hard drive repair tutorial must help you, which is aimed at smoothing the way for you to fix a corrupted external hard drive. Another advice is that you should take good care of the data stored on it during or after external hard drive repair. If unfortunately, you find them lost, please turn to Recoverit Data Recovery in less than no time so that you can promptly recover data from external hard drive not detected or not working.

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