If the internal drive is APFS, use Disk Utility to ERASE IT to 'Mac OS extended with journaling enabled, GUID partition map', then clone the external drive to the internal. El Cap 'can't see' APFS drives at all - at least not in the finder. You can still ERASE the drive, though. I recently noticed one of my internal SATA drives wasn't mounted, and wasn't showing up in DiskUtility to let me mount it manually. I thought nothing of it until I started rebooting and STILL couldn't get the computer to see it. I've tried the drive in all 4 of my internal bays and looked to see if shows up under BootCamp but no luck yet.
How to Solve an External Hard Drive Not Showing Up on macOS. As is usually the case, macOS trades power for usability. You don’t get nearly as many tools to diagnose your drive, but they’re. It could be SSD, yet the internal hard drive may not show up on the Mac, Finder or Disk Utility, stoping you from accessing your data or booting your Mac up. Fortunately, there are some means to fix the internal hard drive not showing up issue. Basically, it depends on if you can boot the Mac when internal hard drive is not showing up.
The internal hard drive of your Mac, also known as Macintosh HD or startup disk, is used to store operating system directory and other data, supporting computer to work in a normal manner. It could be SSD, yet the internal hard drive may not show up on the Mac, Finder or Disk Utility, stoping you from accessing your data or booting your Mac up.
Fortunately, there are some means to fix the internal hard drive not showing up issue. Basically, it depends on if you can boot the Mac when internal hard drive is not showing up.
Case 1: The internal hard drive is not showing up but Mac boots up
In Windows, my drive is not displayed in (My) Computer/This PC or Windows Explorer. New internal Seagate brand drives are not partitioned or formatted from the factory. Only external drives are sold pre-formatted. If your additional drive is new or completely erased, then to be visible in (My) Computer / This PC, it must be partitioned. It was good enough to show the drive from Disk Utility (starting from the install DVD). Which is better than before when it was not even showing the drive. But that's about it, I couldn't get to boot up. I then ordered the SATA cable (as described above in this thread) installed it, and voila, the MacBook Pro is up and running again.
If you can't see the internal hard drive but you can start and use your Mac normally, the good news is that your macOS volume (which usually is the Macintosh HD) is working fine. To access other files on the internal hard drive normally, you can try the following solutions.
Solution 1: Change the Mac's settings to show the internal hard drive
If your Mac computer works in a normal state but the internal hard drive is not showing up in Finder or on desktop. This is because the system is not set up to display hard drives in Finder or on desktop. Here are some simple fixes for this:
1. Go to Finder > Preferences > General tab and select 'Hard disks' to make internal hard drives show on the desktop.
2. Go to Finder > Preferences > Sidebar tab and select 'Hard disks'. Then your internal hard drive should be showing up in the Finder.
Instead, if the Mac doesn't display your external hard drive, you can check 'External disk' in this tab also to make it visible.
3. If the 'Hard disks' option is ticked but internal hard drive is not showing up in the Finder still, open the Finder, put your mouse at Locations in the left sidebar and see if it displays 'Show' or 'Hide'. Click and change to identify if your internal hard drive is hidden by the Finder.
Solution 2: Check whether the internal hard drive is showing up in Disk Utility
The internal hard drive still not showing up/mounting on Mac? Well, you really need to check it in Disk Utility. You can make use of Disk Utility to perform any disk volume-related tasks. Normally, if the hard disk or SSD is listed in the left sidebar of Disk Utility, you can leave out the hardware problems.
If you find the internal hard drive showing up in Disk Utility but some partitions or APFS volumes of the hard drive are lost, the drive may have some file system corruptions. Hopefully, we can provide several clues to help you isolate and troubleshoot most logical disk errors.
1. Mount the internal hard drive on Mac
Sometimes, aninternal hard drive won't mount on Mac, it's time to force it to mount. Simply go to Disk Utility > choose the unmounted internal hard drive > Mount.
2. Run First Aid to repair the internal hard drive
If the internal hard drive is still not mounting on Mac, you can run First Aid to verify and repair various issues like partition table lost and file system corruption. You can go to Disk Utility > choose the greyed out partitions under internal hard drive > click First Aid > choose Run.
Data recovery from corrupted internal hard drive
If unfortunately,Disk Utility can't repair the disk, the corruptions on the internal hard drive are so serious. In this situation, all data on the drive is so fragile that any operation will overwrite it. To prevent further data loss, especially when you have no backup of the data, it's better to immediately recover lost data from the internal hard drive with reliable Mac data recovery software like iBoysoft Data Recovery for Mac.
Case 2: Internal hard drive is not showing up and you can't boot up the Mac
When you can't access the internal hard drive because the Mac is not booting up, you can try these solutions.
Solution 1: Repair the internal hard drive in macOS Recovery Mode
When your Mac won't boot as there is no statup disk, you can try to check if you can find the internal hard drive in macOS Recovery Mode by the following steps.
Step 1: Boot your Mac into macOS Recovery mode. Start your Mac and hold down the Command +R + Option keys simultaneously until you see an Apple logo or spinning globe. Then release the keys.
Step 2: Select Disk Utility from the macOS Utilities menu.
Step 3: Select the corrupted internal hard drive from the left-hand panel if you can see it.
Step 4: Click First Aid on the top and wait while it verifying and repairing errors.
Solution 2: Check the internal hard drive that won't show up in Terminal
If the internal hard drive disappeared from your iMac or Mac mini, you can check the internal hard drive in Terminal, especially for a internal Fusion drive. The reason is that when an internal Fusion drive is split, you can't see it showing up on Mac normally. Instead, it would be split into an extra SSD and a hard drive, making the internal fusion hard drive invisible.
If you can see them with correct storage capacity by the command line 'diskutil list', you need to recover lost data from the internal hard drive with iBoysoft Data Recovery for Mac to avoid data loss and then fix a split fusion drive as soon as possible.
But if you can't see the fusion hard drive with right disk information, you'd better call 1-800-275-2273(US) or contact Apple for support.
How to recover lost data when the internal hard drive is not showing up on Mac?
When your internal hard drive is not showing up in Terminal or in Disk Utility under Recovery Mode, then your hard drive should have some serious corruption. In this case, the data on the unbootable Mac is a great concern for you for sure. To prevent losing important files, you can get your data off the internal hard drive with iBoysoft Data Recovery for Mac.
iBoysoft Data Recovery for Mac is free Mac hard drive data recovery software that helps you recover documents, pictures, audios, videos, emails from internal and external hard drives. It can recover lost data when the hard drive is not showing up, not recognized, not mounted, not readable. What's more, this program can also recover lost data from formatted or corrupted Macintosh HD external hard drives, USB flash drives, SD cards, etc. Even when your Mac is not booting up, the program can regain access to your machine without taking out the internal hard drive.
It is compatible with macOS 10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.
How to recover lost data from internal hard drive when Mac can access the Internet?
If you have only one Mac computer, please directlyrun iBoysoft Data Recovery for Mac in macOS Recovery mode and recover lost data from the unbootable Mac computer. This solution is highly recommended because it is easier and more effective.
Note: Before you follow the steps below, you have to make sure your Mac has Internet connection.
1. Reboot this Mac and press Command +Option +R keys.
2. Choose a network for your Mac. You need to make your Mac connected to the Internet all the time.
3. Click Utilities in the top menu and select Terminal from the drop-down menu.
4. Run the following command:
This will launch iBoysoft Data Recovery for Mac through iBoysoft Server.
5. Select the internal hard drive and recover lost data with iBoysoft Data Recovery for Mac with its wizard.
How to recover lost data from internal hard drive when Mac can't access the Internet?
If the unbootable Mac is unable to be connected with the Internet or WiFi, additionally, you need to find another workable Mac to help you recover lost data.
Step 1: Download iBoysoft Data Recovery for Mac on another Mac computer.
Step 2: Install and launch iBoysoft Data Recovery for Mac on the healthy Mac computer.
Step 3: Click iBoysoft Data Recovery on the menu bar and then select 'Create Boot Drive'.
Step 4: Insert a USB drive into the healthy Mac computer.
Step 5: Follow the wizard to create a bootable recovery drive on the USB drive.
Step 6: When the creation process completes, you can insert the USB drive into the unbootable Mac computer, and then press the Power button and Option key (⌥) to start the Mac up.
Step 7: Select iBoysoft Data Recovery for Mac from the boot options.
Note: If you're running macOS Mojave or earlier, iBoysoft Data Recovery for Mac will launch immediately when your Mac boots up. But, if your Mac is running macOS Catalina, you need two additional steps to launch this program.
Step 8: Wait for your Mac to boot up, open 'Terminal' application from 'Utilities' drop-down menu.
Step 9: Run the following command:
Now you can recover lost data from the corrupted internal hard drive.
Erase the internal hard drive and reinstall macOS
After retrieving data from the corrupted internal hard drive, you can reformat the internal hard disk to make it usable again.
Step 1: Boot your Mac to macOS Recovery mode.
Step 2: Select Disk Utility from the macOS Utilities menu.
Step 3: Select the corrupted internal hard drive from the sidebar.
Step 4: Click on Erase from the top.
Step 5: Setup the required information to reformat the disk and click Done when finished.
Step 6: Go back to macOS Utilities screen and select Reinstall macOS.
But if your internal hard drive is not showing up in Disk Utility, the drive may have hardware problems. In this case, none of software is helpful. But you can try to boot up your Mac in Safe Boot or reset the PRAM / NVRAM, and then see if the internal hard drive is showing up on your Mac.
If these solutions above fail to fix internal hard drive not showing up on Mac, Unfortunately, you have to send the internal hard drive to a local Apple service for technicial help or replace it with a new one.
Get a data lifeguard for Mac
Most of the time, when you connect an external hard drive to your Mac’s USB port, you soon see it mount on the desktop. Apple likes to ensure these are easy to find, so they also appear in the Finder in the left-hand column under Devices, since Mac’s treat them the same way as another computer.
However, sometimes, an external hard drive doesn't show up. It’s annoying, especially when you need to transfer something right then. And besides, there can be a risk that data on the external USB pen, hard, or flash drive is corrupt, which means you can’t transfer what you need between devices at all.
Corrupt data can be one reason your Mac won't recognize an external drive, but there are other reasons too. Let’s take a look why this is happening and how you can get an external drive to appear on your Mac and get recover data to access to your documents.
How to fix an external disk drive that won't show up on a Mac
Why an external disk drive is not showing up? There could be a few reasons why a USB flash drive isn’t making an appearance.
Open an External Drive Not Showing on Mac
Get a huge set of top utilities for troubleshooting external hard drives not mounting on a Mac
Start with the basics:
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- Check whether the drive is properly plugged in. It sounds obvious, but since this relies on a wire - either a USB cable or HDMI cable - if it’s not connected properly then it won’t appear on your desktop.
- Faulty cable. Assuming it’s plugged in correctly, not wobbly or loose, the cable could be at fault. Try connecting the same device with a different cable.
- Damaged USB or flash drive port. It could be a hardware issue with the Mac. If you’ve got another port, try connecting the device to that one.
- Reboot your Mac. Sometimes, if a USB disk won't boot, the cause is macOS issue. Hopefully, some data damage that can be fixed by restarting. Choose the Apple menu > Restart. Or press and hold the power button and, when a dialog box appears, click the Restart or press R. Restarting your Mac essentially clears your macOS’s memory and starts it up fresh.
- Incorrectly formatted drive. Not every external drive is optimized for Macs. It could be that you are trying to connect something only fit to interact with Windows devices. If you’ve got a PC or laptop, it’s worth connecting and seeing if you can access the files through another device. The best way to look for an incorrectly formatted drive is to go to
Apple (in the top toolbar menu) > About This Mac > Storage.
See if the external drive shows up here. For more information, go to the same menu option, then select System Report.
- Mac not formatted to display external drives on the desktop. It could be that your Mac already recognizes the device, but just isn’t showing its icon on the desktop screen. Even if that is the case, the drive will still appear in the left-hand column of the Finder menu under Devices. You should be able to access your drive that way, and, in the Finder menu under Preferences > General, you can check External Drives to ensure that from now on it shows up on your desktop too.
- Reset NVRAM. To do this, shut down or restart your Mac, switch it back on and immediately press these four keys together for at least 20 seconds: Option, Command, P, and R. It should look as though your Mac has started again; if it has, release the keys when you hear the second startup chime. Hopefully, the hard drive has shown up now.
- Check Apple’s Disk Utility to see if an external drive is showing up. Disk Utility is within System Preferences, or you can find it using Spotlight. If it is visible, then click the option to Mount, which should make it visible on the desktop and in the External Drives option in the Finder menu.
Unfortunately, if none of those options has worked and the external drive still isn’t visible, then it could have crashed, or be well and truly broken. But there might still be a way you can recover the data on the external drive.
How to show connected devices in Finder
- Go to the Finder menu and select Preferences (Cmd+comma).
- From General tab tick External disks to ensure that from now on it shows on the desktop.
In the Sidebar tab you can choose which folders and devices will be shown in the left-hand column of the Finder window.
How to add cloud storages to Finder
You can also mount cloud storage as local drive on your Mac. By connecting Google Drive, Dropbox, or Amazon to your computer, you get more space for securely accessing and sharing files. For your ease, add cloud drives to Finder with CloudMounter app, so that you keep them close at hand. You can read detailed instructions on managing cloud storage as local drives here.
Repair the failed external drives with First Aid
If your drive is having problems, you can try to fix them yourself with First Aid and therefore get access to your files. First Aid tool will check the disk for errors and then attempt a repair as needed. It helps to verify and repair a range of issues related to startup HD and external drive problems. If you are able to fix the hard drive or SSD in your Mac (or an external drive) using Disk Utility you will hopefully be able to recover your files.
To run Fist Aid on an external hard drive:
- Open Disk Utility. You can searching for it using Spotlight Search or via Finder > Application > Utility
- Check on your external hard drive, click the First Aid tab and select Run to start running diagnostics.
If First Aid successful in fixing errors, the external drive should be available to mount. If the utility unable to repair issues, your drive truly is broken or formatted using a file system that the Mac cannot read - in this way we suggest you follow the next steps to recover data from a damaged disk drive.
How to recover data from a crashed drive
Thankfully, there is an app for that. Disk Drill is the world’s premier data recovery software for Mac OS X. Powerful enough to retrieve long-lost, mistakenly deleted files from Macs, external hard drives and USB drives and camera cards.
Get a file recovery app
With Setapp you get a pack of professional tools for file recovery and Mac maintenance.
An easy way to recover lost files on an external hard drive
Providing you already have Disk Drill Pro version, which you can get automatically by downloading from Setapp:
- Connect your drive to the Mac.
- Quit all other applications on the Mac, especially those that may be trying to access the external drive (e.g. iPhoto, Words)
- Launch Disk Drill.
- Click on the external drive that you are trying to recover files from. If it has partitions, you will see all of them. If, however, you still don’t see any volume to the external drive then you may need to try some of the steps above again or read the Disk Drill Scanning FAQs.
- To avoid the external drive being accessed during the recovery process, click Extras next to the drive or drive partition or file, then select Remount Volume As Read Only. A padlock will appear, protecting the drive during the process.
- Now click Rebuild (or Recover) next to the file(s) you are trying to recover. Once the scan is finished - it may take some time if the files are large - a list of files will appeal.
- Next, click Mount Found Items as Disk button on the bottom-left below the scan results.
- Disk Drill “strongly suggest saving the files to a different drive than the one you are trying to recover files from. Saving to the same drive substantially lowers your chances of recovery.”
- A drive icon will appear, which once you double click will give you the option to open the files as you would do before they were lost. Drag them to another location, such as your desktop or a folder on your Mac.
- Open the files to ensure they have been recovered properly and safely eject the external drive.
Disk Drill does have other ways to recover lost files but assuming there aren’t complications, this method is the most effective. Disk Drill Pro recovery app is available from Setapp, along with dozens of Mac apps that will make your life easier. Never have to worry about a crashed or corrupted external drive again.
A few more tips on getting your files back
- Macs and third-party apps that look after Macs, such as Disk Drill and iStat Menus come with a S.M.A.R.T. (also known as Self-Monitoring, Analysis and Reporting Technology) status monitor. If a SMART check reports errors, then it could mean the hard drive is at risk of failing completely. Within Disk Utility and Disk Drill, there are several solutions for this: Repair Disk Permissions and Repair Disk. If neither work, it’s recommended that you backup all of the data from the disk, erase, then run a SMART check again. The external hard drive should show up as Verified.
- Partitions can get lost within hard drives, temporarily hiding all of the information contained within. Disk Drill can help to identify and restore this information.
- Within Disk Drill, you can restore data when a hard drive is damaged or add formatting, which is also something Disk Utility can help with.
- CleanMyMac, another useful app available from Setapp, can help you identify external hard drive errors and repair them. It is an essential tool worth trying when you’re having external hard drive difficulties.
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Alternative ways to recover data from an external hard drive
Reset the System Management Controller (SMC) if your Mac shuts down when you plug in an external hard drive. Then use a different port to connect the external hard drive. If you’ve got a battery that you can’t remove:
- Shut down and unplug the power adapter
- Press Shift-Control-Option and the power button at the same time. Do this for 10 seconds
- Release all keys
- Plug the power adapter back in and switch your Mac back on
For Macs with removable batteries, you need to switch them off, remove the battery, then press and hold the power button for 5 seconds. After that, put the battery back in, plug in the power adapter and switch the power on again.
What’s your file format? One reason your Mac isn’t recognizing the hard drive is the file format. Windows uses NTFS file formats, while Macs, up until the introduction of Sierra, have used HFS+. Now, Apple has introduced the Apple File System (APFS) for newer operating systems. It is possible to format a hard drive so it can be read on Mac and Windows computers, providing you format using exFAT. However, if you’re having problems accessing the files and the issue is due to formatting, you will need to connect it to a device it can be read on, and then format the files correctly for the computer you are going to use it on next.
How to make Ext2/Ext3 drives readable on Mac
The common issue is Ext2- and Ext3-formatted drives are not readable on macOS. There are two ways to access such external drives on your Mac – via Linux OS or FUSE system. The easiest would be installing Linux to a secondary drive or virtual machine.
If you go with Linux installation, dual boot your Mac with Linux on another drive and use FAT32 as a transfer intermediary. If you don’t have a drive to install Linux to, use virtual machine as an interface for it. Transferring can be done the same way – with FAT32, or via network.
Find External Hard Drive Mac
Another option for reading Ext2/Ext3 disks is mounting disk with Filesystem in Userspace (FUSE). Basically, it works as an extra interface enabling file system access via specially installed modules. Here’s how to mount drives with FUSE:
- Install FUSE for macOS or MacFUSE as well as fuse-ext2 module.
- Use the following Terminal command to enable Disk Utility’s debug menu and see all partitions: defaults write com.apple.DiskUtility DUDebugMenuEnabled 1
- Attach your Ext2/Ext3 drive and locate the device name via Disk Utility.
- In your user account, create a folder to be used as a mount point.
- Use the following Terminal command to mount the drive as read-only: fuse-ext2 /dev/disk2s2 /Volumes/mountpoint
- For write support, use the command: fuse-ext2 -o force /dev/disk2s2 /Volumes/mountpoint
And that’s not the only case where Terminal helps you access external drive.
External Drive Not Showing Up Windows 10
Employ the handy all-powerful Terminal, which always comes forward with solutions for difficult problems. Especially if System Information does recognize the USB or hard drive, but continues to hide it from you, disconnect the drive and try to find it using the Terminal, which you can find in Applications > Utilities.
External Hard Drive Not Showing Up Mac Os 10
- Once in the Terminal, type in the command diskutil list
- A list with information about volumes and drives should appear
- Look for a section labelled /dev/disk_ (external, physical)
- Make a note of the whole line after the word disk
- Now put the following command into the Terminal diskutil info disk followed by the number or digits assigned to that disk
- Now you should see detailed information about the drive, therefore confirming that your Mac can and does recognize it
- Eject using the Terminal by entering the command diskutil eject disk followed by the number or digits assigned to that disk
- Physically remove the disk from you Mac
- Plug it back in and your Mac should recognize it
External Hard Drive Not Showing Up Mac Os X
Console is also reliable when it comes to solving tricky problems, although it isn’t always that easy to use. You can find Console under Applications > Utilities > Console. Console shows if an external drive or any error is detected under the Errors and Faults tab. If no errors show up, then the problem is not caused by the device.
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Find External Hard Drive Mac
To sum up, there are lots of potential solutions for a Mac not reading an external hard drive. If we were to pick one, Disk Drill seems to be the most well-rounded, offering plenty of customizations and power in an easy-to-use interface. Disk Drill Pro recovery app is available via Setapp, along with 150+ Mac apps that strive to make your life much much easier. At the very least, you’ll never have to worry about a crashed or corrupted external drive ever again.
I ereased current MacOS system and tried to setup new version from scratch. But Macbook can't show internal SSD in diskutil anymore. I can't access my SSD in Macbook. Whan I tried until now and results:
1) I was have bootcamp in it and I tried to access to Windows on Macbook, I accessed, but Macbook's own firmware couldn't see it anyway.
2) I have tried SSD and tested everything on it (GTP opening, format settings etc.) everything works very fine for SSD.
3) I have tried install a MacOS to my flash disk from internet recover system, it worked.
4) I have booted 2 different USB sticks (3.0, 2.0) they both never seen as bootable but I can see them in disk utils.
5) I tried reset thing on Macbook (CMD + Option + R + P) didn't work for me.
6) I tried 4 different DMG files with 4 different versions of MacOS (by using TransMac) and I tried to boot all of them on Mac but never worked.
7) Everything was fine until I pressed to 'Erase' button on Disk Utility in CMD + R at startup. I just wanted to reset everything and install a fresh setup but that locked my whole day.
I have tried everything what I can find on the internet but it never see any internal storage anyway.(I mean OS never sees it but bootcamp was still working when even OS can't see it. Until I reset SSD on my Windows PC, I can access to Bootcamp Windows from Macbook Pro after Erasing MacOS Catalina.)
Thank you everyone...
I found the solution. I have an NVME SSD because of that Yosemite or El Capitan can't see it. I just created an High Sierra boot USB and that solved my problem.