If I open it in disk util I sometimes see an actual name of a partition, but most likely it's not the real name. You can not post a blank message. Reply abdul rahaman says: February 23, 2015 at 12:04 pm I want to install couldn't Reply Gary Bridger says: June 1, 2015 at 3:25 pm Ok I guess I done this How much overhead / throughput penalty does it create? http://gsbook.org/unmount-disk/partition-failed-could-not-unmount-disk-wd.php
To create your own bootable disk, refer to our blog ‘Creating a Mavericks bootable install disk'. However, since you are erasing the drive anyway, this doesn't really matter in your situation. Wife Works in LA. Not the answer you're looking for? http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/
It will look like ‘diskx' where ‘x' is an integer starting at 0. You should also see the name of the disk such as ‘Macintosh HD'. You can also subscribe without commenting.
WhyNotVideo211 46,082 views 4:57 How to Fix a Corrupt Mac Harddrive in 10.8 - Duration: 3:03. Enter your admin password if prompted. I love you so much Reply Leave a Reply Click here to cancel reply. Error 69888 Couldn't Unmount Disk Rating is available when the video has been rented.
Loading... Can't Unmount Disk Mac His OS X and iOS tips have been some of the most popular posts on the blog. Sign in to make your opinion count. http://www.stellarinfo.com/blog/couldnt-unmount-disk-error-mac/ You might erase this disk but this will lead to loss of data and erase process may end up unexpectedly.
Cox 356,526 views 5:16 How to Erase or Partition a Drive in Mac OSX - Duration: 6:50. Disk Erase Failed With The Error Couldn't Open Device I went back into my home directory (cd ~) and ran the command again and it worked. Now click on the :PLAY: button to apply your changes. share|improve this answer edited Oct 10 '12 at 15:31 CajunLuke 14.1k53963 answered Oct 10 '12 at 15:03 Michael 1 1 I've had cases where I get this error even when
PLEASE HELP!! Thanks in advance. Couldn't Unmount Disk External Hard Drive Reply Vishal November 20, 2015 Hi Sam, To enjoy full features of the Stellar Partition Manager software you need to register the product by purchasing it from the website. Partition Failed Couldn't Unmount Disk External Hard Drive George W. 4th November 2015 at 1:16 pm · Reply >Alysha S. (9th August 2015 at 7:12 pm) >I’ve got mine booted into a Yosemite installation USB.
Reply Vishal December 2, 2015 Hello Iggy, Thanks for writing to us. this page Reply abdul rahaman says: February 23, 2015 at 12:04 pm I want to install couldn't Reply Gary Bridger says: June 1, 2015 at 3:25 pm Ok I guess I done this You will need any OS X boot drive to complete this task, I used a Mavericks boot installer drive for this purpose but others should work too, whether they are installation Then expand the first partition to include the whole drive (bottom right hand corner). Volume Erase Failed Couldn't Open Disk
Apr 29, 2012 7:12 AM Helpful (0) Reply options Link to this post by goldish, goldish Apr 29, 2012 3:53 PM in response to Linc Davis Level 1 (0 points) Apr It looks as if the failure came from the wiping part. At the unix prompt enter: diskutil list Press RETURN. get redirected here What are these boxes mounted inline on each of the 3 phase wires of a high voltage power line in Miami?
Reply Alan Siu says: December 11, 2015 at 12:11 pm In the terminal, there's no visual feedback for passwords. Force Unmount Mac Published on May 19, 2016Technicalconfessions.comThis video show an alternative way to reformat and erase your SD drive when you receive the following error within the disk utility GUISolution: Disk Erase Failed Tried everything under disk utility, couldn't unmounted disk or said couldn't open disk, depending which disk.
Give it a shot: http://emsooriyabandara.blogspot.com/2014/11/solved-external-hard-drive-not-detected.html Reply Jaycie Turner says: December 11, 2015 at 12:06 pm Whenever I go to type the password, it has a round dot and won't let me Loading... There are just no dots or asterisks to indicate so. Usb Boot Drive Mac 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
macos hard-drive disk-utility partition share|improve this question edited Oct 8 '15 at 21:36 asked Oct 8 '15 at 21:22 Peter S 10817 Just to be clear - you don't Glassed Silver 214,416 views 2:57 How To Format an External Hard Drive for Mac - Duration: 3:41. JonoKimonoDoesTech 18,007 views 2:57 How To Factory/Hard Reset ANY Macbook To Original Settings WITHOUT Installation Disk! 2016 METHOD! - Duration: 4:02. useful reference Reply Andrés says: March 31, 2016 at 6:00 am Thank you very much!!!!!
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. It's okay to mention an idea, but please excerpt it in the answer. I've never seen that. Ignatius College Prep Tech Blog SI's blog about technology Fix for disk erase failed couldn't unmount disk If you're trying on a Mac using Disk Utility to erase a hard drive
After changing the security options and trying to format, it finally said there were errors on the disk. Close Yeah, keep it Undo Close This video is unavailable. Reply Lauri says: August 17, 2016 at 12:56 pm I had hoped…. 🙁 Didn't work for me - I've been trying anything and everything to get my external to show back Loading...
In Terminal I tried: diskutil list /dev/disk0 #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *251.0 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 140.0 GB disk0s2 3: It will ask you to create image of Macintosh HD. MusicTechHelpGuy 15,785 views 4:52 Disk erase failed couldn't unmount disk - Duration: 0:44. Please give me some suitable solution so that I can further use my MacBook Pro.
For the boot drive, it shouldn't matter which version of OS X it's for (assuming 10.7, 10.8, and 10.9 at least), the only requirement is that it has Disk Utility - 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