External Drive Not Showing Mac

1.checked the same external seagate 1TB on another mac thin air system and the harddrive was working fine. 2.Checked a different seagate external hard drive on the Mac pro notebook and the external drive is not showing up in the finder or on desktop. 5 Best Ways to Fix a USB Flash Drive That Won't Show Up on a Mac. Let's take a look at some of the causes of a flash drive not showing up on a Mac to determine if you can resolve your particular issue. Some of these fixes are very simple while others may involve performing data recovery on a corrupted or damaged drive. When your Mac is not recognizing the external hard drive, use Disk Utility to mount and repair the unrecognized external drive. Steps are as follows: Go to Finder Applications Utilities. Double-click Disk Utility to launch it. Mount the External Hard Drive on Mac It could be the case that your Mac already detects an external hard drive, but it just not showing its icon on your desktop screen. If it is the case, then you can easily mount and access your drive again and all you have to do is to follow the below steps.

Summary :

Sometimes, when you connect an external hard drive to your computer, you may find it fails to show up. The external hard drive not showing up problem occurs frequently on Windows PC or Mac, and it could lead to data loss.

There are some useful fixes to the external hard drive not detected on Windows 10. Please read this page offered by MiniTool to know how to access the drive without data loss.

External Hard Drive Not Showing Up PC

Whether you're plugging in a new hard drive or an old one to your computer, it is possible that you can't see it. Some people even reported that the external hard drive is showing up in devices but not in my computer. This is not a rare issue; it has ever happened to many people and will be happening to more.

What are the possible causes for external hard drive not showing up on computer issue?

• Insufficient power supply
• Lack of drive letter
• Outdated drivers
• File system issues
• Partition problems
• Dead USB port
• …

In the following content, I'll mainly discuss external hard drive not showing up/recognized on Windows 10 in 2 different situations. After that, I'll tell you what do I do if my hard drive is not detected.

External Hard Drive Not Showing Up in File Explorer

Seagate external hard drive not showing up.

I know there are a million posts about this issue, but I haven't come across one that fixed my issue and I really don't want to have to shell out a ton of money recovering my data. Running Windows 10 on an Asus K55N and connecting a Seagate Free Agent Go Flex Desk 2TB external drive. When I connect the drive, it shows in Disk Management and the Safely Remove Hardware icon, but I can't get it to populate in File Explorer. I have not tested on another computer, but I have tested with a different USB cable and was able to connect two other external drives. I did the trial of the Seagate Recovery Suite and was able to see all my files listed, I was just hoping to not have to pay to recover the data (if that's what it boils down to, so be it).- said Corey_23 on Tom's Hardware Forum

It's easy to find that an external hard drive doesn't appear in File Explorer after you connected it to a Windows 10 computer. You should go to open Windows Disk Management to check whether your disk shows up there. If you find the external hard disk showing up in Disk Management as unallocated/not initialized/offline, it would be easy to fix the external hard drive not recognized problem. This is what people described as external hard disk detected but not showing in My Computer.

Please read Recover Data From Disk Shows As Unknown Without Damaging It to learn how to fix this.

External Hard Drive Not Showing Up in Disk Management

WD external hard drive not recognized Windows 10.

Case 1:

I have a WD My Passport portable USB hard drive which one of my computers can't detect when plugged in. It doesn't show up in My computer, Device Manager or Disk Management. The only way to get the device recognized is to reboot the computer with it connected, enter BIOS (and do nothing), and reboot again. The drive works fine on my other computer. It has the WD Unlocker Software built in.- posted by Lagnaetti on Windows 10 Forums, Drivers and Hardware

Obviously, Lagnaetti finds that his external hard drive is not being detected by My computer, Device Manager or even Disk Management. He wants to know how to fix the external hard disk not detected issue. In fact, there are some cases in which an external hard drive doesn't show up due to it being broken physically. Yet, there are still chances that the unrecognized hard disk can be repaired.

In addition, there are also some people who said their PS4 external hard drive is not recognized or Xbox One external hard drive is not detected/not showing up. I suggest that they connect the external hard drive to the computer and check.

How Do I Get Windows 10 to Recognize My External Hard Drive

1. Change a USB port.
2. Check the drive in Disk Management.
3. Run the Troubleshooter.
4. Update/uninstall/roll back driver.
5. Reinstall USB controllers.
6. Enable legacy USB support in BIOS.
7. Update system to the latest version.
8. Disable USB selective suspend setting.
9. Update motherboard chipset drivers.
10. Fix the system built-in drivers.
11. Kill virus on the computer and external drive.

There are many useful workarounds for fixing the external hard drive not being detected in Windows 10 (how to repair hard disk not detected in Windows 7 is basically the same).

Method 1: Change a USB Port

The most direct reason why an external hard drive is not detected by computer is a broken USB port. You should try to connect the hard drive via another USB port or on another computer. If the USB device not recognized problem is solved, it is the USB port that should be blamed.

Additionally, the USB drive not showing up Windows 10 may also occur when the power supply of a USB port is not sufficient. In this case, I advise you not to use USB hubs because some of them are not able to provide enough power supply to the external hard drive.

Method 2: Check & Fix the Drive in Disk Management

Sometimes, an external hard drive not showing in Windows Explorer could appear in Disk Management. How to open Disk Management:

1. Press Windows + X keys.
2. Click on Disk Management option from the pop-up menu.

What prevents a drive from showing up:

• External hard drive Unallocated
• External hard drive Not Initialized
• External hard drive Offline
• No drive letter

How to fix the problem in the above 4 cases:

Case 1: create a new volume.

1. Right click on the unallocated space.
2. Choose New Simple Volume (or other volume types you need).
3. Click on the Next button in the New Simple Volume Wizard Welcome window.
4. Specify the volume size and click Next.
5. Finish Assign Drive Letter or Path and click Next.
6. Finish Format Partition and click Next.
7. Click on the Finish button in the New Simple Volume Wizard Completing window.
8. Wait for the operation to complete.

Watch how to Create Partition with MiniTool Partition Wizard.

Case 2: Initialize Disk:

1. Right click on the unknown, Not Initialised disk.
2. Choose Initialise Disk from the context menu.
3. Choose a partition style from MBR and GPT and click on the OK button to confirm.
4. Wait for the operation to complete.

Vmware fusion price. Use MiniTool Partition Wizard to Initialize to MBR Disk or Initialize to GPT Disk.

Case 3: set Online:

1. Right click on the disk which shows Offline.
2. Choose Online from the pop-up menu.
3. Wait a second.

Case 4: Change Drive Letter and Paths:

1. Right click on the disk partition which has no drive letter.
2. Choose Change Drive Letter and Paths from the context menu.
3. Click on the Add button in the pop-up window.
4. Assign a drive letter to the partition and click OK to confirm.
5. Wait a second.

Change Drive Letter more easily with MiniTool Partition Wizard. https://tpen.over-blog.com/2020/12/notebooks-2-0-2-x-2.html.

Do you want to recover your files from external hard drive not detected? If yes, please read the following tutorial.

How to recover files from external hard drive not detected?

Step 1: download MiniTool Power Data Recovery. Then, install and launch it.

Step 2: Choose Removable Disk Drive from the main window and select the external hard drive.

Step 3: click on the Scan button to scan the selected external hard drive.

Step 4: browse the scan results during the scan. Alternatively, you can wait until the end of the scan and then select the files you want to restore.

Step 5: press the Save button and choose another drive with enough free space to store the recovered files.

Step 6: press the OK button to confirm the selection and start external hard drive file recovery.

At last, you can check the recovered files to put an end to the recovery work.

Please read this page if your external hard drive seems dead and you need to recover important data from it:

Whether you're plugging in a new hard drive or an old one to your computer, it is possible that you can't see it. Some people even reported that the external hard drive is showing up in devices but not in my computer. This is not a rare issue; it has ever happened to many people and will be happening to more.

What are the possible causes for external hard drive not showing up on computer issue?

• Insufficient power supply
• Lack of drive letter
• Outdated drivers
• File system issues
• Partition problems
• Dead USB port
• …

In the following content, I'll mainly discuss external hard drive not showing up/recognized on Windows 10 in 2 different situations. After that, I'll tell you what do I do if my hard drive is not detected.

External Hard Drive Not Showing Up in File Explorer

Seagate external hard drive not showing up.

I know there are a million posts about this issue, but I haven't come across one that fixed my issue and I really don't want to have to shell out a ton of money recovering my data. Running Windows 10 on an Asus K55N and connecting a Seagate Free Agent Go Flex Desk 2TB external drive. When I connect the drive, it shows in Disk Management and the Safely Remove Hardware icon, but I can't get it to populate in File Explorer. I have not tested on another computer, but I have tested with a different USB cable and was able to connect two other external drives. I did the trial of the Seagate Recovery Suite and was able to see all my files listed, I was just hoping to not have to pay to recover the data (if that's what it boils down to, so be it).- said Corey_23 on Tom's Hardware Forum

It's easy to find that an external hard drive doesn't appear in File Explorer after you connected it to a Windows 10 computer. You should go to open Windows Disk Management to check whether your disk shows up there. If you find the external hard disk showing up in Disk Management as unallocated/not initialized/offline, it would be easy to fix the external hard drive not recognized problem. This is what people described as external hard disk detected but not showing in My Computer.

Please read Recover Data From Disk Shows As Unknown Without Damaging It to learn how to fix this.

External Hard Drive Not Showing Up in Disk Management

WD external hard drive not recognized Windows 10.

Case 1:

I have a WD My Passport portable USB hard drive which one of my computers can't detect when plugged in. It doesn't show up in My computer, Device Manager or Disk Management. The only way to get the device recognized is to reboot the computer with it connected, enter BIOS (and do nothing), and reboot again. The drive works fine on my other computer. It has the WD Unlocker Software built in.- posted by Lagnaetti on Windows 10 Forums, Drivers and Hardware

Obviously, Lagnaetti finds that his external hard drive is not being detected by My computer, Device Manager or even Disk Management. He wants to know how to fix the external hard disk not detected issue. In fact, there are some cases in which an external hard drive doesn't show up due to it being broken physically. Yet, there are still chances that the unrecognized hard disk can be repaired.

In addition, there are also some people who said their PS4 external hard drive is not recognized or Xbox One external hard drive is not detected/not showing up. I suggest that they connect the external hard drive to the computer and check.

How Do I Get Windows 10 to Recognize My External Hard Drive

1. Change a USB port.
2. Check the drive in Disk Management.
3. Run the Troubleshooter.
4. Update/uninstall/roll back driver.
5. Reinstall USB controllers.
6. Enable legacy USB support in BIOS.
7. Update system to the latest version.
8. Disable USB selective suspend setting.
9. Update motherboard chipset drivers.
10. Fix the system built-in drivers.
11. Kill virus on the computer and external drive.

There are many useful workarounds for fixing the external hard drive not being detected in Windows 10 (how to repair hard disk not detected in Windows 7 is basically the same).

Method 1: Change a USB Port

The most direct reason why an external hard drive is not detected by computer is a broken USB port. You should try to connect the hard drive via another USB port or on another computer. If the USB device not recognized problem is solved, it is the USB port that should be blamed.

Additionally, the USB drive not showing up Windows 10 may also occur when the power supply of a USB port is not sufficient. In this case, I advise you not to use USB hubs because some of them are not able to provide enough power supply to the external hard drive.

Method 2: Check & Fix the Drive in Disk Management

Sometimes, an external hard drive not showing in Windows Explorer could appear in Disk Management. How to open Disk Management:

1. Press Windows + X keys.
2. Click on Disk Management option from the pop-up menu.

What prevents a drive from showing up:

• External hard drive Unallocated
• External hard drive Not Initialized
• External hard drive Offline
• No drive letter

How to fix the problem in the above 4 cases:

Case 1: create a new volume.

1. Right click on the unallocated space.
2. Choose New Simple Volume (or other volume types you need).
3. Click on the Next button in the New Simple Volume Wizard Welcome window.
4. Specify the volume size and click Next.
5. Finish Assign Drive Letter or Path and click Next.
6. Finish Format Partition and click Next.
7. Click on the Finish button in the New Simple Volume Wizard Completing window.
8. Wait for the operation to complete.

Watch how to Create Partition with MiniTool Partition Wizard.

Case 2: Initialize Disk:

1. Right click on the unknown, Not Initialised disk.
2. Choose Initialise Disk from the context menu.
3. Choose a partition style from MBR and GPT and click on the OK button to confirm.
4. Wait for the operation to complete.

Vmware fusion price. Use MiniTool Partition Wizard to Initialize to MBR Disk or Initialize to GPT Disk.

Case 3: set Online:

1. Right click on the disk which shows Offline.
2. Choose Online from the pop-up menu.
3. Wait a second.

Case 4: Change Drive Letter and Paths:

1. Right click on the disk partition which has no drive letter.
2. Choose Change Drive Letter and Paths from the context menu.
3. Click on the Add button in the pop-up window.
4. Assign a drive letter to the partition and click OK to confirm.
5. Wait a second.

Change Drive Letter more easily with MiniTool Partition Wizard. https://tpen.over-blog.com/2020/12/notebooks-2-0-2-x-2.html.

Do you want to recover your files from external hard drive not detected? If yes, please read the following tutorial.

How to recover files from external hard drive not detected?

Step 1: download MiniTool Power Data Recovery. Then, install and launch it.

Step 2: Choose Removable Disk Drive from the main window and select the external hard drive.

Step 3: click on the Scan button to scan the selected external hard drive.

Step 4: browse the scan results during the scan. Alternatively, you can wait until the end of the scan and then select the files you want to restore.

Step 5: press the Save button and choose another drive with enough free space to store the recovered files.

Step 6: press the OK button to confirm the selection and start external hard drive file recovery.

At last, you can check the recovered files to put an end to the recovery work.

Please read this page if your external hard drive seems dead and you need to recover important data from it:

If you are stuck in finding ways to recover files from dead external hard drive efficiently, this passage will be very helpful.

Method 3: Run Troubleshooter

For USB device not recognized in Windows, there is a useful tool to help: Hardware and Device Troubleshooter.

How to run Hardware and Device Troubleshooter:

1. Open Settings the way you like.
2. Choose Update and Security from Windows Settings panel.
3. Go to the Troubleshoot tab.
4. Scroll down to choose Hardware and Devices from the right pane.
5. Click on the Run the Troubleshooter button.
6. Wait for the detecting to complete.
7. Once the scan is completed, Windows will list the found issues.
8. You should choose the issue you want to fix and click Next.

Method 4: Fix Device Driver Problems

You can open Device Manager to check and fix the issue.

1. Press Start + X keys on the keyboard.
2. Choose Device Manager from the pop-up menu.
3. Expand Disk drives option.
4. Right click on the problematic drive.
5. Choose from Update driver, Uninstall device and Properties.
6. Finish the rest steps by looking at system prompt.

• The Update driver feature helps to fix the USB drive not recognized problem due to a corrupted/outdated device driver.
• The Uninstall device feature is used to uninstall your USB external hard drive with the issue. After that, you should remove the USB device from the computer and then reconnect it after at least 1 minute. This is useful when your USB driver has become unstable or corrupt.
• The Properties feature will help you further diagnose the problem by looking at the error Besides, you can choose to Roll Back Driver by shifting to Driver tab after clicking Properties.

Method 5: Reinstall USB Controllers

Also, you should open Device Manager using the above method or other ways you like. Then, finish the following steps:

1. Find and expand Universal Serial Bus controllers.
2. Right click on a device and choose Uninstall device from the context menu.
3. Click on the Uninstall button in the pop-up window.
4. Repeat step 2 and step 3 to uninstall all devices under Universal Serial Bus controllers.
5. Restart your computer and Windows will install the USB controllers automatically.

Method 6: Enable Legacy USB Support

Sometimes, you may find your hard disk not detected in BIOS. This may be caused by the disabled Legacy USB Support.

How to enable USB support:

1. Restart your PC.
2. Press the corresponding button to enter the BIOS utility.
3. Shift to Advanced tab.
4. Choose USB Configuration.
5. Select Legacy USB Support and set it to be Enabled.
6. Exit and save changes.

It's not an easy task to recover data from a hard disk that is not detected in BIOS especially when the disk is an internal one. The good news is MiniTool Power Data Recovery bootable edition provides an easy way to recover data when the PC won't start. As for how to recover data from undetected internal hard disk step by step, please read:

If you're stuck in the data recovery from corrupted internal hard disk, the solutions and software provided here will be of great help.

Method 7: Install the Latest Windows Updates

This method has the same functionality as the Update driver.

1. Type Windows Update into the Cortana search box.
2. Select Check for updates from the Best match.
3. Click on the Check for updates button and wait.
4. Finish the rest operations according to prompts.

If you find some files get lost after Windows Update, please use MiniTool Power Data Recovery to recover data at once.

Method 8: Disable USB Selective Suspend Setting

1. Type power plan into the Cortana search box.
2. Select Choose a power plan from the search result.
3. Click Change plan settings next to the plan used currently.
4. Click Change advanced power settings.
5. Find USB settings and click on the + button to expand it.
6. Click on the + button to expand USB selective suspend setting.
7. Change Setting to be Disabled.
8. Click on the Apply button to confirm and click on the OK button to close.

Method 9: Install the Latest Chipset Drivers for Motherboard

Hard Drive Not Showing Up Windows 10

1. Look for the documentation of your computer to find the name of the motherboard manufacturer.
2. Visit the website of the manufacturer.
3. Find the drivers proper for your motherboard and install it on your computer.

Method 10: Repair the System Built-in Drivers

• Press F8 or another button to enter the safe mode during the boot process; select restart or shut down the computer and power on it later to enter the normal mode (to repair the registry).
• If the problem persists, please enter safe mode again to choose System Restore in order to restore your system to an earlier point when there's no such problem.
• If the problem persists, please use the system disk to repair; open the command prompt, enter SFC / scannow, press Enter and insert the original system disk to repair the system
• If the problem persists, please set the CD-ROM as the first boot device in the BIOS; then, insert the system installation disc and press R key to select repair installation.
• If the problem still persists, I advise you to reinstall your OS.

Method 11: Run Anti-virus Program

If your PC is attacked by virus, unfortunately, any external hard drive connected to this PC will be affected. The virus may cause the external hard drive not showing issue. Please run anti-virus software to kill the virus and get Windows 10 to recognize your external hard drive.

RECOMMENDATION:

To recover data from virus infected external hard drive, you can try using MiniTool Power Data Recovery because of its excellent performance, high security, and simple operations. How to recover files after virus attack:

I feel glad to share solutions with users to help them recover files deleted by virus attack quickly and safely.

How to Fix: External Hard Disk Detected But Not Opening

There are also some people saying that their external hard drive could be detected by Windows, but can't be opened. The most direct reason is the file system problem.

When the file system of your hard drive is not supported by Windows, you won't be able to access the drive. For instance, Windows gives no support for the ext4 file system (designed for Linux) and the HFS + file system (designed for Mac).

After clicking on the drive, you'll be asked to format the disk before you can use it.

• If you choose Format, you should know that all your data saved here will be lost.
• If you choose Cancel, you will see the message: The volume does not contain a recognized file system.

Actually, themost common causes are:

• The file system is damaged.
• The file system is not supported.
• The drive becomes RAW.
• The parameter is incorrect.
• The file or directory is corrupted and unreadable.
• …

2 Methods for Solving External Hard Disk Detected But Not Opening

1. Run CHKDSK in Command Prompt.
2. Reformat the drive by using MiniTool Partition Wizard.

There are two useful methods for fixing the external hard drive detected but not opening error: run CHKDSK and format the drive.

Method 1: run CHKDSK.

1. Type cmd into the Cortana search box on the taskbar (what if Windows 10 taskbar is not working?).
2. Right click on Command Prompt from the search result.
3. Choose Run as administrator from the context menu.
4. Choose Yes in the User Account Control window.
5. Type chkdsk /r * (* stands for the drive letter) and press Enter.
6. Wait for the stages to complete.

Method 2: format the drive.

1. Launch MiniTool Partition Wizard.
2. Select the drive with an unsupported file system.
3. Choose Partition from the menu bar and choose Format from the submenu.
4. Choose NTFS or FAT32 as the new file system.
5. Click on the OK button to confirm.
6. Press the Apply button in the main software window.
7. Choose Yes in the pop-up window to apply pending changes.
8. Wait for operations to complete.
9. Click on the OK button in the Successful window.

Minolta camera serial number lookup. Click to see Format Partition Tutorial.

Conclusion

Though it may seem strange, it is not a rare problem that the external hard drive is not showing up/recognized/detected. There are many factors that could lead to this problem. When you find that your external hard drive is not showing up in your computer, please use the methods mentioned above to help your computer recognize the hard drive. You can also refer to this post to learn how to recover data from your external hard drive in different ways.

External Hard Drive Not Showing Up FAQ

Summary: External hard drive not mounting on Mac means that you can't access data stored on it. This page helps you mount external hard drives, as well as SD cards and USB flash drives, etc. on Mac. If the external hard drive won't mount on Mac, you can download iBoysoft Data Recovery for Mac to recover lost data from unmountable external hard drives.

Usually, an external hard drive will appear (aka mounted) automatically on your Mac once you plug it in, and you can access data on this drive. So, it's annoying when you find that your external hard drive is not mounting or recognized by your Mac, just like the user below.

'I have a 500 GB LaCie external hard drive, formatted as macOS Extend journaled on MacBook Pro 2014 and I have been using it to do Time Machine backups. Now after updating, macOS is not mounting this external hard drive. The main drive is greyed out in Disk Utility and the partition is not showing up. I can't do First Aid as my LaCie external drive does not mount on the MacBook Pro. Any ideas? Thanks!'

Wondering 'why my external hard drives won't mount on Mac'? This post explains the reasons and teachs how to fix this disk problem without losing data.

Dos and Don'ts When External Hard Drive Not Mounting on Mac

Before you go further, it's better to know what you can do and can't do.

1. Do not go straight to reformat this not mounted external hard drive, especially when you have important files on it. Reformatting will wipe the data on this disk and cause serious data loss.

2. Do not run First Aid to directly repair the disk, any further operation is very likely to overwrite your original files and make them unrecoverable.

3. Check if you have a copy of a data backup. If not, recover important files from this unmountable external hard drive first to avoid data loss.

Now, let's make the external disk accessible on Mac.

Fix external hard drives not mounting issue on Mac

To access your external hard drive on Mac, try solutions suggested in this part one by one. Hopefully, you'll be able to open this external hard drive on Mac again.

First, try some simple tricks to mount external hard drive on Mac

In case you miss anything necessary, you can first have some basic checks as following:

Iphone emulator mac. 1. Re-plug your external hard drive to another port or try another USB cable.

Download music from mac to android. A faulty connection, though it is foolproof, might be the key fix if LaCie thunderbolt drive is not mounting, in that users always forget to check if the port is wobbly or if the cable is broken.

2. Try a super slow jam.

Strange but true, some users found that their external will mount properly when they plug it in exceptional slow motion. However, if they try and plug in the external hard drive normally, the Mac doesn't recognize the disk.

3. Check your Finder Preferences.

When your external hard drive does not appear on the desktop, you can open Finder, choose 'Preference' (or press Command +, ) and check 'External disks' both in General tab and in Sidebar tab to show your external hard drive on your Mac computer.

If Mac could not mount the external hard drive on desktop still, let's troubleshoot this issue with the following solutions.

Solution 1: Force mount this external hard drive in Disk Utility

If you can't find the external hard drive on the desktop or in the Finder, you can try to make the disk online manually in Disk Utility (a native disk management tool in your Mac).

Here is how to mount an external hard drive on Mac:

• 1. Click Go at the upper left of your desktop and go to Utilities, then launch Disk Utility on your Mac computer.
• 2. Click on 'Show All Devices' in View option to list or connected drives.
• 3. Choose the grayed external hard drive in the left sidebar.
• 4. Select Mount in the top center of Disk Utility.

However, if you find that your external hard drive is not showing up in Disk Utility (not a single volume but the whole disk disappears), it is very likely that your disk is suffering some physical damage. In this case, you need to send it to a local data recovery service. But if the Mount option is grayed out and you can see this external hard drive in Disk Utility, you can try another solution then.

Solution 2: Repair this unmountable external hard drive with First Aid

The second suggestion is First Aid in Disk Utility if you are unable to mount the external hard drive on Mac. First Aid is a very simple tool that is built in your Mac, and it is able to detect and repair directory damage and other disk errors. You are advised to run the tool more than once to ensure you are receiving a consistent result.

Follow the instructions and repair the external hard drive that is not accepted by your macOS or Mac OS X.

• 1. Go to Utilities and launch Disk Utility on your Mac computer.
• 2. Select the unmountable external hard drive on the left sidebar.
• 3. Select First Aid in the top center and click Run.

Solution 3: Reformat the unmounted external hard drive

If your external hard drive still can't be mounted in Disk Utility after you perform First Aid, or if First Aid failed to repair it like the situation below, your drive should have some serious errors like file system corruption.

• Disk Utility can't repair this disk, what do to?

Wd External Drive Not Showing Up Mac

• How to format external hard drives on Mac?

In this case, you need to back up your important data on the external hard drive, such as family photos, valuable work documents, or any other files. If you don't have a copy of a data backup in hand, the following guide can help you recover lost data from this unmountable external hard drive. And then, you can reformat your exteranl hard drive to make it work again on Mac.

How to recover data from an external hard drive that won't mount?

As long as your external hard drive doesn't have any hardware problem, fortunately, you can retrieve your files with professional Mac data recovery software - iBoysoft Data Recovery for Mac with no fuss.

Best External Hard Drive Data Recovery - iBoysoft Data Recovery for Mac

• Recover lost data from unmountable, formatted, inaccessible, unreadable, corrupted external hard drives.
• Supported storage devices: external hard drives, USB flash drives, memory cards, SD cards, etc.
• Supported file types: photos, videos, audio files, documents, emails, etc.
• Suppported Mac OS: macOS Big Sur 11/10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.

Read-only & risk-free

Tutorial for external hard drive data recovery on Mac with iBoysoft Data Recovery for Mac

• 1. Free download and install iBoysoft Data Recovery for Mac on your computer, and then restart your Mac.
• 2. Launch iBoysoft Data Recovery for Mac.
• 3. Select the external hard drive that is not mounting and click Scan button to scan for all lost data.
• 4. Preview the searching results, choose files you need, and click Recover to get them back.
• 5. Have a check to ensure you have got all lost data back.

Note: You need to save the recovered files to another usable drive.

After having successfully restored all data on this drive, you can set out to erase this external hard drive to fix the disk not mounting on Mac issue.

Tutorial to reformat unmountable external hard drives on Mac

• 1. Launch Disk Utility.
• 2. Click the icon of your unmountable external hard drive on the left sidebar.
• 3. Click on the Erase button function on the top of the Disk Utility window.
• 4. Complete the related information (name, format, scheme), then click Erase button to finish reformatting.

Mac Can't Find Hard Drive

After reformatting, your external hard drive will be assigned with a new file system so that you can mount this unmountable hard drive again.

Then, why we can't access the external hard drive on Mac?

Probably, the user above would never know why his MacBook is not mounting the external hard drive. As a matter of fact, this problem could be caused by many factors, such as damaged file system, virus attack, unsafe ejection or any other improper operations.

Here are some common ones.

1. A damaged file system: If your external hard drive is attacked by virus or if you abruptly eject this drive, it's likely that the file system of this disk would be damaged or corrupted. As a result, the operating system is unable to recognize this disk, and the disk will not be mounted or read by macOS.
2. Connection problems: Another reason that hard drive won't mount on Mac could be a dirty or loose connection between your cable, USB-C multi-adapter, Thunderbolt 3, or other connecting ports. A clear, clean, snug and fit tightly connection is the premise of mounting an external hard drive successfully.
3. Hardware issue: Also, problems related to hardware could also make the disk unmountable, especially when your external hard drive has too much bad sectors or have been physically damaged.

Knowledge Base: What does 'Mount' mean on Mac?

Mounting an external hard disk means the macOS gives a mount point (entrance) to read and access information on the hard drive. Information is accessed by the disk file system and partition table. So, it's a necessary step before the operating system can access a disk (including read from and write to).

Therefore, if an externalhard drive won't mount on Mac, it means the system gets into trouble in recognizing the file system or other information of this hard drive.

Conclusion:

If your external hard drive is not mounting on your Mac, don't panic. Most of the time, you are going to fix this disk problem with the solutions above. Moreover, if you worry about data loss when the disk becomes unmountable, you can use iBoysoft Data Recovery for Mac to recover your files first. Remember that, no matter what disk problem you meet, you should perform hard drive data recovery in case of losing data.