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Could Not Unmount Disk

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Reply Jak says: January 29, 2015 at 5:37 pm Much appreciation! Bu videoyu bir oynatma listesine eklemek için oturum açın. Reply Monish d kothari says: September 13, 2015 at 6:17 am For people unable to boot from other disk ( elaborated method) : * Download the OS X firmware form App How can I turn rolled oats into flour without a food processor? http://jessriegel.com/unmount-disk/mac-lion-disk-erase-failed-could-not-unmount-disk.html

However, this is not applicable for the modification of the boot disk with the help of partitions or formatting. share|improve this answer edited Jul 29 '14 at 12:39 answered Oct 18 '13 at 16:28 grgarside 78k14116172 Thanks! Once you are satisfied with the recovery performance of the software, you can purchase the software through its buy page. Reply TE says: March 26, 2016 at 9:59 am Couldn't get around this problem until I found your solution… Used diskmaker x to make an el capital boot disk then followed https://discussions.apple.com/thread/3342839?start=15&tstart=0

Disk Utility Couldn't Unmount Disk External Hard Drive

Launch up Terminal.app (through /Applications/Utilities or through a Spotlight search). Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.6. Locate your drive and right click on it. Stellar Partition Manager doesn't resize EXFAT partitions.

Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. The following steps can do the fixing: The USB boot drive is attached to the Mac, and the system is rebooted The OPTION key is held during the booting and then Any ideas? Volume Erase Failed Couldn't Open Disk But I kept it, lets see what I can do :) –Peter S Dec 9 '15 at 7:37 Good luck, hope it works! –Dannid Dec 9 '15 at 8:00

I would recommend looking for anything with the white, thumb disk-icon that looks like it might have come with the new drive, and eject it. You can organize filters to the software so that it recovers only specific files. Thank you! This will bring in the drive menu. 4) Select the newly created boot DVD from this option.

You should now be able to erase the drive. Error 69888 Couldn't Unmount Disk Have an external hard drive, which i used to boot up the iMac with el capitan, but i am still in the process of trying to erase the internal drive. Or if you have any other files open that came pre-installed on the drive, close them. Reply Andrés says: March 31, 2016 at 6:00 am Thank you very much!!!!!

Volume Erase Failed Couldn't Unmount Disk

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The vacant space will then be reoccupied with your Mac HD 2. Disk Utility Couldn't Unmount Disk External Hard Drive Reply Eugene May 19, 2015 Why the software is not showing my Boot Camp partition? Partition Failed With The Error Couldn't Unmount Disk It will look like ‘diskx' where ‘x' is an integer starting at 0.

Causes The reason for this error is the modification of the boot drive, or it is being used by some other process or application. navigate here NOTE: Use of the ‘sudo' command may not be necessary for some of these actions, however, as long as you know the administrator account's password, starting any unix command with ‘sudo' Reply uzz says: July 21, 2016 at 1:05 pm You don't need any boot drive nor recovery partition utility to fix this error. Make sure to search before asking. –grgarside Jun 9 at 11:33 add a comment| up vote 1 down vote Disable Spotlight for that Hard Drive (System Preferences) https://discussions.apple.com/thread/1454712?start=0&tstart=0 share|improve this answer Can't Unmount Disk Mac

Worked like a charm for me to reformat an external drive. 100x easier than the other ways I read to solve the unmount issue, like boot disks, etc. Hot Network Questions How to replace not found reference "??" in an another constant e.g "REF"? United States Copyright © Apple Inc. http://jessriegel.com/unmount-disk/mac-repairing-disk-failed-with-error-could-not-unmount-disk.html from there i booted the iMac on its original OS X lion and from there downloaded the public beta of mac os sierra, which i was supposed to in the first

Reply John says: August 10, 2016 at 1:13 am You can force unmount a drive by running the following Terminal command: diskutil unmountDisk force /Volumes/VOLUMENAME Replace VOLUMENAME with the name of At Least One Volume Could Not Be Unmounted Then select the desired external drive from the startup manager screen and press the enter key. Maybe using utilities in Linux would also work.

Use Disk Utility<

Or if you have any other files open that came pre-installed on the drive, close them. Reply Alan Siu says: June 26, 2016 at 8:06 am The only thing I can think of is that you're accidentally typing it wrong. Back up as many of your files as possible, reformat the disk, and restore your backed-up files' I unsure of my disk right now and need some solution asap. Force Unmount Mac Dilinizi seçin.

Thank you ! -Bobby Reply Lissett says: October 11, 2015 at 10:19 am Worked for me as well! I searched high and low and your directions were the easiest to follow and actually worked!! I tried this but it still didn't work, it says "unable to unmount 1 or more part" or something like that. this contact form Many thanks.

Took about 5-10 minutes. However, since you are erasing the drive anyway, this doesn't really matter in your situation. Open the disk untility and eras your disk normally - the error will be gone. Open Menu Close Menu Apple Shopping Bag Apple Mac iPad iPhone Watch TV Music Support Search apple.com Shopping Bag : CommunitiesSign inPostBrowse discussionsContact SupportSearchCommunitiesContact SupportSign inContentPeopleSearch Support CommunitiesNotebooksMacBook Pro Please enter

If the external El Capitan absolutely refuses to unmount the disk, can you try booting into Recovery Mode (hold down Cmd-R while booting up) and then using Disk Utility there? Thank you so much. Skip to content St. We're trying to find the best answers and those answers will provide info as to why they're the best.

I love you so much Reply Leave a Reply Click here to cancel reply. WhyNotVideo211 46.082 görüntüleme 4:57 Mac OS X (10.11 El Capitan) - Format Drives with Disk Utility - Süre: 4:52. Just keep typing your password and then hit Enter when you're done.