My Passport For Mac Disk You Inserted Was Not Readable By This Computer
The Disk You Inserted Was Not Readable By This Computer Error [Fixed]
Are you getting “the disk you inserted was not readable by this computer” error message on your Mac PC screen? And can not able to access the files inside the unit? If the answer is yes, then do not get panic, since it is possible to fix the disk that you have placed was not readable by this Mac pc.Disk Utility is the built-in app provided by Apple, if your Mac gives you the error” The disk you inserted was not readable by this computer” you can use these solutions to fix the problem.
Generally, this particular error information comes with three different options, and here they are, ‘Initialize, Ignore and Eject’. In case you select the first option, the format of the particular unit that should not be done will be requested.
While on the other hand if you select the second option then the message will certainly disappear and the same thing will happen along with the third option as well.
Even though it is a crucial situation, however, you are also likely to recover the information from the unreadable unit in the original file format. Under these conditions, make sure that no absurd experiments are useful for file recovery.
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Error caused – The Disk you Inserted Was Not Readable by This Computer
errAENotAnEnumMember = -10023 enumerated value in SetData is not allowed for this property, kInvalidRegEntryErr = -9081, kernelInUseErr = -2416, twoSideErr = -78 tried to read 2nd side on a 1-sided drive, afpPwdNeedsChangeErr = -5045 the password needs to be changed, tsmNeverRegisteredErr = -2504 app never registered error, kRATCPIPNotConfigured = -7125 TCP/IP not configured could be loaded, dsMacOSROMVersionTooOld = 120 the version of the Mac OS ROM is too old to be used with the installed version of system software.
Learn everything about the “The Disk you Inserted Was Not Readable by This Computer” error
Mac systems are one of the best operating systems present in the world but that doesn’t mean that you won’t get any problem in MAC systems. Generally, this problem can cause the Mac system to run slow or give some unexpected problems as well.
Many times due to these problems mac system can block, and due to the issue of The Disk You Inserted Was Not Readable by This Computer error, you may not be able to access your hard drive or the Mac applications as well that you have installed on your system.
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Hence, if you are faced with a problem like this, then simply do not get panic. If the mac system is running slow, it is not working properly or the hard drive is inaccessible, don’t worry, as here in this post we will give you a solution to solve this problem.
What cause the Disk to be non-readable?
The problem of The Disk You Inserted Was Not Readable by This Computer can be caused by several reasons and here they are:-
User problem
Accidentally there are possibilities to delete the mac files or the format of the hard disk and the volumes of the mac. However, the fact is that this can happen to anyone while the system is running.
Cleaning the Trash
There are times when you empty the trash without checking if there are any important files in it.
Power failure
Sometimes there is unexpected termination of mac system files due to a sudden power failure. This causes the programs to abruptly end up causing the problem and loss of mac data in the disk you inserted.
Interruption of the read/write operation
There are times when we interrupt the read/write operations at some point halfway, which may cause a problem.
Data not supported
Sometimes, we receive some data through shared use, but they are not compatible with Mac systems and end up being corrupted.
Virus attack
We know that Mac is free of viruses, but this is not the case, as there are Mac viruses that can cause a huge loss to your system.
Bios Configuration Modifications
If we change the BIOS settings, then it could simply cause several problems, as we are not experts in the configuration of the BIOS and this can lead to problems that can cause the loss of Mac data.
Corruption of header file
The most important file of any document is header files. Save all the information about the document you are going to access. But sometimes this file gets corrupted and leads to several problems.
Node corruption of catalog files
These nodes of catalog files keep records of the file type and type of access, and these are files generated by the system and are sometimes damaged.
The Sciologness.com™ agent utility uses data collection technology to conveniently update multiple PC drivers. Drivers are the property and the responsibility of their respective manufacturers, and may also be available for free directly from manufacturers' websites. 
Boot sector problem
The problems of the boot sector make the data or files inaccessible, which causes the loss of data from the mac.
Problem in the kernel
Like BSOD in Windows, the Mac users can also deal with problems related to the kernel.
Problem in the installation of the program
There are many programs designed specifically to create problems in your system. If you install any application or program without checking its source, it may cause a problem with the disk you inserted.
Software or hardware problems
Any software or hardware failure can also cause loss or corruption of Mac data.
So, now without wasting much time let’s get started and simply explore the whole tutorial that we have mentioned below.
First method: Check the cable and the port
First, we suggest you to change the port and try to connect to another port. In case this does not work, replace the cable and connect the unit. But, still, if you face the same problem then simply try to connect the unit on a Windows PC and simply verify that the unit works or not.
Second method: Repair the unit on another Mac
After joining the trip on another Mac, however, you are receiving the same error, then there is only one problem with your external drive. So let’s try to repair the disk directly from your Mac.
- First of all, simply open the “Disk Utility.”
- Then simply find and click on the defective disk which is located on the left side.
- After that now simply choose the First Aid Option and click the run button.
- That’s it, now you are done.
Third method: Format the disk
If still you are facing the same problem, and none of the above solutions works for you, then we have the last option is to format the entire drive, which will remove all the damaged files that interrupt the disk opening. So, you should have to keep in mind that you will lose all your data after formatting the disk.
- First of all, simply open the “Disk Utility” again.
- Then simply choose the unreadable disk and then click on the “Erase” button.
- After that again click on the “Erase” button which is located at the top of the window.
- Now simply enter the information and then select the “Erase” option.
- Once the unreadable disk is formatted, now you can use it again.
- That’s it now you are done.
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So, what do you think about this? Simply share all your views and thoughts in the comment section below. And if you liked this tutorial then simply do not forget to share this tutorial with your friends and family.
Usually, when we connect the external drive to Mac, it shows up quickly on the desktop. But when you don’t find the external drive on the desktop, then it is frustrating cause you can’t copy or post anything on your Mac internal drive. We all have some important stuff like backups, documents, movies and much more things stored in the external drive. However when you find that your Mac doesn’t recognize external hard drive then different thoughts come in mind like the drive is corrupted or crashed. Sometimes Drive not appear on the desktop, then you should check for a disk in the left frame of finder Windows and under the ‘’Devices’’ heading.
Even if you have an external drive which contains corrupted data, then Mac won’t recognize the external drive on macOS Mojave. Before judging the exact reason, we will try to solutions and fix this issue.
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Mac Doesn’t Recognize External Hard Drive anymore and why your Mac is not mounting or won’t detect specific popular brand drives including Seagate, wd, Toshiba, Iomega, Lacie, and exfat. Don’t worry, Apply my task, I’m sure that you will get rid of on this issue. Our, this article got many thanks from our readers so hope you will get success too. Let’s dive on it to know correct problems and its solution!
Hold, before getting started the tutorial, keep in mind that Apple Mac Computer and Apple notebook including (MacBook Pro, MacBook Air, MacBook), etc. need the hard drive that must be formatted with a file system so you Mac can support. Usually, a tech-savvy guy knows that formatting drive erases all of the data on it. In case, your hard drive is pre-formatted as NTFS then your macOS can only read data from it, not write any files and data of it.
Solutions to fix Mac Doesn’t Recognize External Hard Drive on Mojave
Are you sure the port is correct for the hard drive? If it isn’t found a right slot, then try giving useful clues.
Solution 1: Faulty USB Cable of your hard drive
Before trying any other solution, you must look on cable (in most case USB cable) which you are using while connecting the external hard drive to the Mac. If the wire has defected, then Mac won’t recognize the external hard driveon Mojave. Plug the USB cable correctly, or you can try to connect the external drive using another USB cable.
Hint: if your hard drive comes with a Thunderbolt or FireWire cable, then please find the right port to plug your external hard drive. Otherwise, get an adapter in case of don’t have a port on your Mac.
Solution 2: Damaged Port
When we roughly use the USB port of Mac and connect and disconnect so many times in a day can result in damaged port. So this can be considered as a hardware issue. Try connecting the external drive to another USB port.
Solution 3: Incorrectly formatted drive
I would like to remind you that Mac uses a different format. So if you are trying to connect the same Windows formatted drive, then Mac won’t show external hard drive on macOS Mojave.
Connect the same drive with another Windows PC and check if your hard drive is showing their or not. If it is showing on Windows, then change the format that is compatible with macOS.
Solution 4: Restart Mac
Evergreen way to fix any weird issue is to reboot the system and give a fresh start to the system. However, after restarting the Mac hopefully, your problem will get fixed.
Step #1: Go to the “Apple” menu and “Restart” the Mac.
Solution 5: Mac is not formatted to show external drives
It could be possible that Mac successfully recognizes the external drive, but it is not showing on the desktop of Mac. To cross verify and enable Mac to show external drives on the desktop you have to follow the steps,
Step #1: Go to Finder” menu and click on “Preferences.”
Step #2: There check the box near “External disks.”
Solution 6: Check Apple’s Disk Utility
Disk Utility keeps the record of how much storage is used, and unused along with it also shows externally connected drives. If you found any external hard drive on the Disk Utility, then Mount the drive.
Step #1: Click on the “Apple” menu and open “System Preferences.”
Step #2: Select “Disk Utility.”
Step #3: If you see your connected external hard drive on the list then click on “Option” and Mount the drive.
Solution 7: Check Power of your Hard disk
Some of the external hard drives required separate power connection so if you have powered hard drive then you make sure that the drive has enough power. For this, you may need a dual USB cable.
If none of the above solution work for you then it might be possible that external hard drive is crashed or damaged.
Solution 8: You consider Replacing your Drive
Test your Drive on other Mac or Windows computer, and if it is not showing on there too then, your hard drive fails and this the time to buy a new one. If you hard drive new and its under warranty or guaranty, then please contact particular seller or company.
Wrap up:
If unluckily, your Mac is old or even in new Mac the hardware Port frailer, then what next? Apple Store? Yes, you should go to your nearest Apple Authorized service center and ask them your problem regarding Mac doesn’t mount external hard drive. Hope they will guide you honestly. Stay in touch with us for further assistance.
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Jaysukh Patel is the founder of howtoisolve. Also self Professional Developer, Techno lover mainly for iPhone, iPad, iPod Touch and iOS, Jaysukh is one of responsible person in his family.
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