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Unmount external hard drive mac os x

I've had this message despite being sure there are no open files on the volume.

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In my case, it was a sign that the file system is corrupt. Running Disk Utility or if that wasn't enough, DiskWarrior solved the problem and made the disk ejectable again. My experience: I had a Volume which constantly could not be ejected properly as in the OP's screenshots , and always needed a "force eject", sometimes even a forceful physical disconnection nor recommended!

My fix: The ejection issue can be caused by corrupted or legacy file content on that Volume. Removing the troubled content can fix this permanently. In detail:. Determine which file is accessed with lsof or fseventer.

Mount & Unmount Drives from the Command Line in Mac OS X

In my case it was a Classic Mac OS file with a resource fork that remained open, likely as some background disk parsing process Spotlight, QuickLook, or thelike hung on it. Backup that troubling data into a file archive which preserves Classic Mac specific resource data. I simply used Finder's native "Compress" function from it's context menu. Try unmounting the volume again.

It may still fail, as the background processes, which failed, could be still in a irrecoverable state. Then try unmounting again. From then forth the Volume worked fine again. Only when a file was indeed open by a user process, unmounting was prevented. Perfectly normal behaviour again. I prefer the command line just slightly, as it's always there with you. On the other hand, What's Keeping Me is quicker and easier to use if you've got it installed. Solution Make sure all programs are closed.

Click the Apple icon in the top left of the screen, then click Force Quit. In the list click Finder. Now click the Relaunch button.

What to do when a hard drive won’t unmount in OS X El Capitan

Then try ejecting the drive again. Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Would you like to answer one of these unanswered questions instead? Home Questions Tags Users Unanswered. The volume can't be ejected because it's currently in use Ask Question.

When pressing the 'eject' button Finder warns me with the message: Resource busy -- try 'diskutil unmount' " As far as I am aware, I am not using this disk but Finder says I do, so I must be wrong. CousinCocaine CousinCocaine 6, 8 38 So what you are saying is that I am right? Opposite question: And if Spotlight is the culprit, save yourself some repetition: Ze'ev 1, 9 35 Paul Gilfedder Paul Gilfedder 2, 1 12 I found this as well, but I hoped someone has a non terminal solution. I'd suggest you to improve your suggested command as: Oh excellent, I did lsof without sudo which gives a totally different set of results.

Yep, sudo is definitely needed in a lot of cases. As the manpage points out: Jason Robinson Jason Robinson 3 5. I believe I tried this and it did not work. But next time I'll try it again and update my post accordingly. Your example has quotes, not apostrophes. Which is a good thing. Thanks for pointing that out, I made corrections to the answer.

Recover macOS High Sierra unmounted external hard drive data

Good catch! I suggest you to install Stellar Data Recovery Professional for Mac to recover your important documents and to avoid any data loss risk. The software scans your unrecognized SSD and list all the recoverable files. To save the files, you need to register the software. Leverage Stellar Mac Data Recovery and you can recover data from unmounted disk conviniently.

Thanks for another informative blog. Where else could I get that kind of info written in such a perfect way? Would you recommend some solution for data recovery? Yes, we have solution for unmounted data recovery on MacOS. You can watch the tutorial video and then download Stellar Mac Data Recovery to recover your files. Recently i bought it from my friend.

macos - The volume can't be ejected because it's currently in use - Ask Different

Then i upgraded it to Mac OS high sierra successfully. I installed it and tried many times to upgrade to Mac OS high Sierra. But failed to installed. After 5 hours of download, the installation requires the system to restart but the restart is failed.


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I am very depressed and stuck with the mountain lion. Did you try erasing the Apple hard drive via recovery mode? Once in Recovery Mode, you can go to Disk Utility and erase the complete hard drive to a single partitioned drive. Just the solution I was looking for.. This worked for me — easy and no separated USB drives required. Your email address will not be published. Time limit is exhausted.

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Stellar Phoenix is now Stellar. MENU Close. Summary The user often experiences a problem, while handling some of the Macs, when they are not allowed to repair permissions or directory in Disk Utility. Causes The reason for this error is the modification of the boot drive, or it is being used by some other process or application.

Solution There are many solutions when the user faces these problems. These are: The following steps can do the fixing: Problems such as these keep occurring in a digital environment. If you too have found your hard drive in unmounted condition on Mac and urgently need to recover the data then watch the below video.

The video show data recovery on an unmounted external drive with Stellar Data Recovery Professional for Mac. Once you have activated the Mac recovery tool you can recover as many numbers of files from any given external drive or SSD. Kay Frazier January 24, Vishal January 25, Hello Kay, Unfortunately, currently, we are not providing any bootable drive.

Bradley Edward November 22, Arpana November 23, Phyllis Duckworth July 11, Vishal July 11, Penney Wilson June 3, Sara April 18, Vishal April 18, Regards Vishal Reply. SHAN February 28,