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Disk Utility Could Not Unmount Disk Time Machine


I would also advise you to install Stellar Partition Manager on your Yosemite. They are unable to erase or partition the drive. 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 Appreciate if someone may help me on this. navigate here

PLEASE HELP!! Please let me know how should I proceed. Tried every single thing above. time-machine disk-utility external-disk share|improve this question edited Apr 28 '14 at 8:29 asked Apr 27 '14 at 9:03 jpoh 3173418 add a comment| 6 Answers 6 active oldest votes up vote This Site

Volume Erase Failed Couldn't Unmount Disk

Screenshot below. Finally -- If you do get the drive unmounted and re-intialized, I strongly suggest that you consider using CarbonCopyCloner to create a fully-bootable "clone" of your main drive, and use that When I tried to do the backup again, I was given this message: "Time Machine could not complete the backup.

Back up as many of your files as possible, reformat the disk, and restore your backed-up files. This was driving me crazy. Reply Jimmy Kiddo says: August 13, 2016 at 10:05 am Man, you are a genius,,,worked like a charm Reply Brock says: September 15, 2016 at 7:54 am This worked for me Can't Unmount Disk Mac Very smooth.

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. Partition Failed With The Error Couldn't Unmount Disk This can happen during partitioning, disk verification and repair, and even during formatting, and there's usually little to no additional information provided as to how to resolve the problem or even Yet another piece of Chess software A published paper stole my unpublished results from a science fair Could aliens colonize Earth without realizing humans are people too? http://www.stellarinfo.com/blog/couldnt-unmount-disk-error-mac/ 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.

iMac 27 inch , iMac 21 inch, Macbook 15 inch, Macbook 13 inch. Error 69888 Couldn't Unmount Disk In my example below, the disk name is ‘Server'. I need to get this one fixed and get the internal one running again, because i can't have two computers running off one external drive, and i still need to fix Formatting the hard drive or partition scheme will recreate new HFS file structure on the hard drive, which will be free from cryptic errors.

Partition Failed With The Error Couldn't Unmount Disk

What is a real-world metaphor for irrational numbers? original site Reply Scott says: February 12, 2016 at 1:43 pm Great tip. Volume Erase Failed Couldn't Unmount Disk But, whenever I try to repair my hard drive, it gives me an error message, “Couldn't unmount disk”. Disk Utility Couldn't Unmount Disk External Hard Drive United States Copyright © Apple Inc.

I recently made the switch to a Macbook Pro and went about using time machine to set up my new laptop. check over here I managed to salvage the drive by erasing it using Disk Management on Windows (where both partitions showed up as 'Healthy') and reformatting it on the Mac. Took a lot of time to find it but was a flawless solution. The solution lies only in using a separate USB drive for fixing the error. Volume Erase Failed Couldn't Open Disk

You can resize the partition to take all the available free spaces on the Mac hard disk drive. 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 Look complicqted to far added agreeable from you! http://strobelfilms.com/unmount-disk/could-not-unmount-disk-mac-time-machine.html If you have any idea to get the HDD working or even safe the files, I would be really grateful.

That's as far as I can get. Disk Erase Failed With The Error Couldn't Open Device wt to do pls i need help .. Tried everything under disk utility, couldn't unmounted disk or said couldn't open disk, depending which disk.

My VM of Linux on the other hand never saw the disk, probably a configurtation issue, don't really sure about it though –Peter S Dec 11 '15 at 6:54 add a

How does ssh run a command? Thanks in advance. Enter your admin password if prompted. At Least One Volume Could Not Be Unmounted Making identical C++ type aliases incompatible Measuring Water with a Holey Cube Is it possible to have 3 real numbers that have both their sum and product equal to 1?

I boot into the Recovery HD/Repair Disk and then TM will work perfectly until I unmount the second drive the next time.I assume you have the drive formatted to HFS+. Your password is being accepted. It started backing up no problem. weblink Jan 19, 2013 2:27 PM Helpful (0) Reply options Link to this post by Galaxy User, Galaxy User Nov 17, 2013 5:03 PM in response to elliswicks Level 1 (0 points)

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. theComputerGuru 198.114 görüntüleme 5:29 How to Verify and Repair a Disk From the OS X Command Line - Süre: 2:53. JrTech 1.672.890 görüntüleme 3:45 How to make any External Hard Drive work on Mac OS X - Süre: 4:33. I am sharing the buy now link of Stellar Partition Manager so that you can resize your Mac ASAP.

Hope this helps. Reply Leave a Reply Cancel reply Your email address will not be published. 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+). I have drives that are older that are still ticking along nicely.

I love you so much Reply Leave a Reply Click here to cancel reply. Some of the following steps are destructive and will lose ALL data on your drive. Can't be 100% certain so if I were you I would definitely try to backup the other partition to another drive in case it fails as well. (If you could post Thank you so much 🙂 Very clear instructions!

Typically the "Couldn't Unmount Disk" error pops up when the currently boot drive is being modified, thus the easiest solution is to boot from another drive and run Disk Utility from share|improve this answer edited Feb 12 at 15:52 TheBro21 1,491825 answered Feb 12 at 14:51 Ross B 1 add a comment| Your Answer draft saved draft discarded Sign up or Does Wand of the War Mage apply to spells cast from other magic items? As of now, Stellar Partition Manager doesn't resize or partition Boot Camp.

Reboot the Mac holding down the "Option" key and choose the Recovery partition Select "Disk Utility" from the boot menu Go to "First Aid" to verify and repair the disk, or Sometimes, this works.