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Could Not Unmount Disk External Hard Drive Mac

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Thanks so much for the quick and easy tip. iMac 27 inch , iMac 21 inch, Macbook 15 inch, Macbook 13 inch. Used diskmaker x to make an el capital boot disk then followed your steps and it worked on my 2013 MacBook Pro with Yosemite version. Now, take an HDD and format it to OS X extended journal 3. have a peek here

However, editing causes all not-an-answer flags on the post to be dismissed and takes the post out of the Low Quality queue. This is becoming annoying as I have to do a full erase and full Time Machine backup of the drive every time it does this.Any more suggestions? Is すごく怖 bad, or good? "Shields at 10% one more hit and..." What? Disk Utility ejects unmountable "in use" disks just fine on my unit which runs on 10.7.5. https://discussions.apple.com/thread/4503583?tstart=0

Disk Utility Couldn't Unmount Disk External Hard Drive

I'm not trying to reformat the hard disk in my Mac but my external hard disk! Here you can check out the KB article for the same. Regards Timothy Reply Vishal May 21, 2015 Hey Timothy, Thanks for writing to us. Working...

After searching for a very long time through forums of people suggesting basic things or trying to make others feel ignorant this solution worked! I wouldn't have installed it on an everyday use (production) machine, but I guess what's done is done. So the first thing to do is to startup the Mac from another bootable drive such as an external drive or OS X Recovery. Disk Utility Can't Unmount External Disk Sign in to report inappropriate content.

So much easier and clearer than anything else I read. Loading... Click to visit Stellar Partition Manager key registration page Reply Iggy December 2, 2015 I have an EXFAT partition on my 1TB usb hard drive however Stellar Partition Manager Visit Website http://www.stellarinfo.com/blog/repair-mac-hfs-hard-drive/ Hope this helps.

Tried to force unmount to no avail. Force Unmount Mac If you can't remember it, reset it (you can do so from recovery mode): https://discussions.apple.com/docs/DOC-4101 Reply Jerry says: October 5, 2016 at 5:25 pm thx Reply Nate says: October 25, 2016 Name (required) Mail (will not be published) (required) Website « Grab the iOS 7 Default Wallpapers for iPhone & iPod touch Evolution of the iPhone & iOS Home Screen » How to find punctures in inner tubes?

Couldn't Unmount Disk Mac

This should then allow you to partition and work with the physical disk again. 1) Using the Terminal application again, booting from OS X Recovery or an external bootable drive. http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/ After the Time Machine has done a few backups and seems fine, it "corrupts" and has to be completely wiped and start all over! Disk Utility Couldn't Unmount Disk External Hard Drive However, since you are erasing the drive anyway, this doesn't really matter in your situation. Can't Unmount Disk Mac Ignatius College Prep Tech Blog - trademarkable on How to read from and write to .plist files using PythonAlan Siu on Fix for disk erase failed couldn't unmount diskPages About this

Loading... navigate here He has successfully recovered number of Mac hard drives, failed drives and even unmounted drives. Browse other questions tagged mac disk-utility or ask your own question. Reply Leave a Reply Cancel reply Your email address will not be published. Partition Failed With The Error Couldn't Unmount Disk

Please try again later. Watch Queue Queue __count__/__total__ Find out whyClose Disk Erase Failed with the error: Couldn't unmount disk - FIX Mac acguevara SubscribeSubscribedUnsubscribe33,67133K Loading... Watch Queue Queue __count__/__total__ Find out whyClose Solution Disk Erase Failed with error Couldn't unmount disk mac Daniel Redfern SubscribeSubscribedUnsubscribe3535 Loading... Check This Out Reply Alan Siu says: December 11, 2015 at 12:11 pm In the terminal, there's no visual feedback for passwords.

Thanks Reply Vishal April 8, 2016 If Disk Utility is failing again & again to format the hard drive then you can try formatting with Stellar Partition Manager utility. Error 69888 Couldn't Unmount Disk See my comment here: apple.stackexchange.com/questions/142459/… –Nicolas Barbulesco Feb 19 at 16:11 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Could you also let me know the file format to which your external drive was formatted before this error?

Author Alan SiuPosted on April 13, 2015Tags disk utility, diskutil, erase drive, mac, unmount 40 thoughts on “Fix for disk erase failed couldn't unmount disk” Randall says: July 14, 2015 at

Nov 18, 2013 4:28 AM Helpful (0) Reply options Link to this post Page 1 Next Apple Footer This site contains user submitted content, comments and opinions and is for informational So now i have two broken internal hard drives. Nov 27, 2012 2:32 PM Helpful (0) Reply options Link to this post by elliswicks, elliswicks Dec 4, 2012 12:49 PM in response to Joe Gramm Level 1 (1 points) Dec Volume Erase Failed Couldn't Open Disk Enter your password when prompted.

About Us Contact Us Mac OS X Hints Ad Choices Digital Edition Customer Service Newsletters Magazines, eBooks & Apps Privacy Policy RSS Terms of Service Agreement E-commerce Affiliate Relationships Macworld CATEGORIES I usually format my hard disks to clear the documents I no longer need. But my Mac stubbornly refuses and says that an application may be using the disk. http://strobelfilms.com/unmount-disk/error-could-not-unmount-disk-external-hard-drive.html By using the System Prefs → Spotlight.

Ask Different works best with JavaScript enabled Skip to content St. Now, press the opt n reboot your system 6. I'm not a technology person? Add to Want to watch this again later?

Thanks! sudo mdutil -i off "/Volumes/Name_of_Drive" (-E erases and rebuilds the index). Chedens Alexis 4,091 views 0:44 How to Fix a Corrupt Mac Harddrive in 10.8 - Duration: 3:03. Please tell me what should I do now?

Easy Steps 14,351 views 4:05 Easy Fix: Mac: External Drive Not Ejected Properly - Duration: 6:38. Your password is being accepted. Sign in to report inappropriate content. Please type your message and try again.            elliswicks Level 1 (1 points) Q: Can't unmount my External Hard Drive?

I now have a useable disk where before it would not mount and could not be formatted or erased. The command "history" just gives me the history of the commands entered, it does not give me back their result. –Nicolas Barbulesco Feb 18 at 17:43 1 After issuing the Reply Sheryl Brown March 7, 2016 I must Thank You for resolving mu issues. Thanks a lot Kelvin 30th August 2015 at 3:21 am · Reply I got same error:-69888.

and tell TextEdit that yes, you do want to save it with a dot at the front (which will make it invisible.) I'm not sure whether that will stop it right How to respond to a ridiculous request from a senior colleague? Any OS X boot drive is needed to complete the task. You could try to reboot. –Matteo Mar 11 '13 at 6:39 add a comment| 3 Answers 3 active oldest votes up vote 3 down vote You can't have any files that

Please let me know if this resolves your issue. It is failing every time. Reply Alan Siu says: July 8, 2016 at 10:18 am Sierra is still beta, right?