Still getting those pesky disk errors? If that doesn't work, I'd actually seriously consider booting Ubuntu or some other non–Mac OS X operating system to reformat the drive that way first, and then use Disk Utility to Run a command similar to this one sudo diskutil unmountDisk force /dev/disk2 If you're prompted for a password, enter it (yes, your account does need to have administrative privileges). Reply Alan Siu says: December 8, 2016 at 12:21 pm Try booting up Ubuntu and reformatting the drive (as FAT32) and then booting into Recovery Mode and re-reformatting it (as HFS+). my review here
Chedens Alexis 4,091 views 0:44 Mount and Unmount Disks in OSX Terminal - Duration: 2:29. Apr 29, 2012 5:25 AM Helpful (0) Reply options Link to this post by goldish, goldish Apr 29, 2012 12:31 PM in response to Linc Davis Level 1 (0 points) Apr Hope this helps. I am sharing the buy now link of Stellar Partition Manager so that you can resize your Mac ASAP.
Reply Sam November 19, 2015 Hi Vishal, To resize my Mac startup disk, I am searching for the Stellar Partition Manager Registration key but unable to find any suitable Reply joe says: May 4, 2016 at 5:58 am Thank you! Sign in to make your opinion count. Oliver Capener 29,959 views 2:11 Loading more suggestions...
I really can't afford to pay someone $300 when I'm this close! Enjoy this tip? Published on Dec 20, 2014Have you ever tried to erase or format a drive for whatever reason and got the error "Disk Erase Failed With The Error: Invalid Request"? Disk Erase Failed With The Error Couldn't Open Device Reply chris says: December 1, 2016 at 3:14 pm I've done this procedure several times, it says it was successful: "Forced unmount of all volumes on disk2 was successful" but it's
Thank you so much. Can't Unmount Disk Mac Add to Want to watch this again later? First, figure out your password. http://www.stellarinfo.com/blog/couldnt-unmount-disk-error-mac/ After the download & installation of Yosemite I wanted to remove Macintosh HD partition but keep music and video files and transfer them to Mac HD2.
Here you can check out the KB article for the same. Force Unmount Mac I found the solution so I wanted to make it easy for everyone else. But, whenever I try to repair my hard drive, it gives me an error message, “Couldn't unmount disk”. I was able to force an unmount and could wipe the disk.
The above steps did the trick and everything was working again as expected. navigate here Skip to content St. Couldn't Unmount Disk External Hard Drive Seems your hard drive is corrupt and beyond the repair of Disk Utility. Volume Erase Failed Couldn't Open Disk Transcript The interactive transcript could not be loaded.
Find the one you want to force unmount. this page Please type your message and try again. goldish Level 1 (0 points) Q: Partition issue, couldn't unmount disk (error) Hi, I have a Mac that I put a partition Skip navigation Sign inSearch Loading... We are now going to force erase the physical disk, creating a single Mac OS Extended (Journaled) volume. Error 69888 Couldn't Unmount Disk
I've tried the original text and the one you suggested to Jon and it still says ‘command not found' Any ideas what's up? Bit more drastic, but you can attempt to force a volume or the entire physical disk to unmount: FOR A VOLUME: 1) Using the Terminal application again, booting from OS X acguevara 11,277 views 2:22 How to reset your MacBook Pro to Factory Settings without Installation Discs - Duration: 3:28. http://gsbook.org/unmount-disk/mac-lion-partition-failed-could-not-unmount-disk.php United States Copyright © Apple Inc.
The error, which is thrown, is the: ‘Disc erase failed couldn’t unmount disc.' or ‘Disk Erase failed with the error: Couldn’t unmount disk.’ The error occurs in such situations like formatting Partition Failed Couldn't Unmount Disk External Hard Drive in any way. After searching for a very long time through forums of people suggesting basic things or trying to make others feel ignorant this solution worked!
Then use activity monitor to force the process to quite and then redo the partitioning. Disk Utility can be run from the external drive. When I go into Disk Utilities > Erase tab > change Volume Format to Mac OSX Extended > click erase, it keeps saying disk "Erase failed with the error: File system Usb Boot Drive Mac Why did Sansa refuse to leave with Sandor Cleagane (Hound) during the Battle of Blackwater?
ends in 2 days Related 1Install Boot Camp gone bad — installed windows on a wrong drive1merging free space into a partition that logically lies before the partition34How to resolve error: Sign in 18 0 Don't like this video? We'll cover both with a bit of explanation. useful reference Thank you ! -Bobby Reply Lissett says: October 11, 2015 at 10:19 am Worked for me as well!
Apr 22, 2012 4:39 AM Helpful (0) Reply options Link to this post by Shootist007, Shootist007 Apr 22, 2012 11:52 AM in response to goldish Level 6 (16,660 points) Apr 22, I also have 1TB Seagate external hard drive. An external drive or a network drive is preferred if it is the internal hard drive you have an issue with, since the OS X Recovery is a partition on the