Enter your admin password if prompted. I've tried to unmount through disk utility as well as through Terminal. Enter the following where ‘MacintoshHD' is the name of the newly created Mac formatted partition, and where ‘x' is your disk identifier, (remember to use the ‘diskutil list' command if you 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 http://gsbook.org/unmount-disk/disk-utility-erase-error-could-not-unmount-disk.php
Please type your message and try again. Alex0102030405 Level 1 (10 points) Q: Time Machine "could not Unmount Disk" I have a Buffalo Ministation 1T (as my portable hardrive), If you want, you can select Security Options, then move the slider on that window to the first position from the left (or select Zero-Out Data on Snow Leopard and earlier) Then select the desired external drive from the startup manager screen and press the enter key. Who were the red-robed citizens of Jedha City? https://discussions.apple.com/thread/4071087?start=0&tstart=0
You can use "sudo lost | grep dev/disk?" where "? Now I need to retrieve some files from the Time Capsule backup but unable to connect to it. Reply Johnathan Melton November 5, 2016 Ok trying to wipe the mac pro completely but I can't cause I can't unmounted a partition drive so I tried a bunch Disk Utility states the disk needs to be repaired, but when I try to repair the disk, "unable to unmount for repair" is stated.
MacRumors attracts a broad audience of both consumers and professionals interested in the latest technologies and products. Be sure you backup your files to an external drive or second internal drive, the following procedure will remove everything from the hard drive! Follow his post to know more about data recovery and Mac backups. Error 69888 Couldn't Unmount Disk Just today I noticed that the hard drive is not mounting correctly anymore On boot-up, both partitions do not show up in the Finder at all When I unplug the drive
This is a good example of why it's very valuable to have a bootable USB thumb drive set up with whatever version of OS X is running on your Macs, because Partition Failed With The Error Couldn't Unmount Disk I had been under the impression that it would delete old backups to make space for new ones, but this didn't seems to be happening. First, shut down the drive and computer. http://forums.macrumors.com/threads/time-machine-external-hard-drive-issues.1294299/ Here is how you should proceed 1) Download Stellar Partition Manager.
FOR AN ENTIRE PHYSICAL DISK: 1) Using the Terminal application again, booting from OS X Recovery or an external bootable drive. Force Unmount Mac My simple answer to your problem: Replace the drive, it's defective. However, I would like to get some files off the drive if possible. share|improve this answer answered Nov 6 '14 at 21:33 werlingdervish 1 add a comment| up vote 0 down vote I had the same problem with my year-old external drive (3 TB
ApertureAlley 72,177 views 3:03 Loading more suggestions... you could try here David A. Disk Erase Failed With The Error Couldn't Unmount Disk theComputerGuru 198,114 views 5:29 How to make any External Hard Drive work on Mac OS X - Duration: 4:33. Can't Unmount Disk Mac But, then, as I tried to use the drive as a time machine for my new Macbook Pro, it would always say the the drive was full.
The drive will not let me transfer files. http://gsbook.org/unmount-disk/error-could-not-unmount-disk-disk-utility.php When you get to the finder, go to System Preferences, click on Time Machine, and flip the TM "on/off" switch to OFF. 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 Such boot drives are easy to create on your own, here are instructions for making boot disks for OS X 10.9, OS X 10.8, and OS X 10.7. Cannot Unmount Disk Mac
Does having a finite number of generators with finite order imply that the group is finite? Retox Media 16,568 views 2:29 How to Format An External Hard Drive for Mac - Duration: 5:16. Hope this helps. http://gsbook.org/unmount-disk/mac-repairing-disk-failed-with-error-could-not-unmount-disk.php Thanks again.
Advertise on MacRumors Our Staff Arnold Kim Editorial Director Email • Twitter Eric Slivka Editor in Chief Email • Twitter Juli Clover Editor Email • Twitter Joe Rossignol Editor Email • Volume Erase Failed Couldn't Open Disk Thanks. I would strongly recommend at this stage attempting to back up any data that is required before proceeding with the following steps.
The solution lies only in using a separate USB drive for fixing the error. The one and only requirement are that Disk Utility must reside on the drive. When you start the software select your Apple drive. Couldn't Unmount Disk Operation Failed share Share on Twitter Share on Facebook Email Link Like + Quote Reply Rustyboy, Dec 21, 2011 Rustyboy thread starter macrumors newbie Joined: Jan 16, 2010 #6 Thanks so much for
You might erase this disk but this will lead to loss of data and erase process may end up unexpectedly. Firstly you need to create a boot media using Stellar Partition Manager software. 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. have a peek here 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
Sign in to add this to Watch Later Add to Loading playlists... Most Liked Posts Rustyboy, Dec 20, 2011 Rustyboy macrumors newbie Joined: Jan 16, 2010 #1 Hello all, I'm having some issues with my time machine/external hard drive that hopefully one of share Share on Twitter Share on Facebook Email Link Like + Quote Reply Qwerty11, Dec 10, 2012 Qwerty11 macrumors regular Joined: Sep 1, 2010 #7 Fishrrman said: ↑ ""Volume Erase failed: Everything now back to normal.
Useful Searches Recent Posts Options Please select a forum to jump to News and Article Discussion MacRumors.com News Discussion Mac Blog Discussion Thanks in advance. 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. Newer Than: Search this thread only Search this forum only Display results as threads More...
Then use activity monitor to force the process to quite and then redo the partitioning. Transcript The interactive transcript could not be loaded. Next, disconnect the drive by removing the USB cable. Snazzy Labs 736,903 views 9:31 How to Clean Your Mac - Duration: 25:43.
Browse other questions tagged time-machine disk-utility external-disk or ask your own question. Philip H. 7th August 2015 at 5:14 pm · Reply I'm in the same boat with Crystal. I have a 2010 iMac with a 1.5 TB Seagate external hard drive I use for Time Machine as well as other backups. The above steps did the trick and everything was working again as expected.
To create bootable media and accomplish the task you need to register the software through Stellar Partition Manager Buy Now Page. Members have access to different forum appearance options, and many more functions. This worked for me as well.