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Disk Erase Failed With Error

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a problem, while handling some of the Macs, when they are not allowed to repair permissions or directory in Disk Utility. They are unable to erase or partition the drive. Even the Network deployment tools like Apple's Netinstall service or the

Disk Erase Failed With Error File System Formatter Failed

DeployStudio fails, on account of this error. The error, which is thrown, is the: ‘Disc erase disk erase failed with error couldn't open device failed couldn’t unmount disc.' or ‘Disk Erase failed with the error: Couldn’t unmount disk.’ The error occurs in such situations like formatting Mac as

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well as partitioning and verification and repairing of Mac disk. Causes The reason for this error is the modification of the boot drive, or it is being used by some other process or application. If the internal drive is causing disk erase failed with error couldn't unmount disk the issue because the OS X Recovery exists as a partition on the physical disk, unable to modify or unmount the internal drive, then the preference must be given to a network drive or an external drive. Solution There are many solutions when the user faces these problems. Using an external drive or OS X Recovery for the starting up of the Mac from another bootable drive. Disk Utility can be run from the external drive. The version of disk erase failed with error invalid request the OS X does not matter, by at least must be 10.7, 10.8 and 10.9. The one and only requirement are that Disk Utility must reside on the drive. There are three means of resolution of the problem. These are: (1) Fixing with Partition Manager If the OS X is denying you to format, erase and repair the Mac hard drive or a volume due to the Couldn’t Unmount Disk’ Error then use Partition Manager Application to format the hard drive with Mac OS X Extended Journaled file system. Formatting the hard drive or partition scheme will recreate new HFS file structure on the hard drive, which will be free from cryptic errors. Further, the disk manager utility will allow the user to create, resize, add partitions on the hard drive with HFS, FAT or NTFS file systems. (2) Fixing with USB Boot Drive This is the most recommended method to repair the error. Any OS X boot drive is needed to complete the task. But, the important point to remember is that the installer or the recovery drive must reside in the drive, separate from the primary boot disk with the installed OS on it. 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 the attached boot drive is selected Disk Utility is accessed through the Boo

Google. Het beschrijft hoe wij gegevens gebruiken en welke opties je hebt. Je moet dit

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vandaag nog doen. Navigatie overslaan NLUploadenInloggenZoeken Laden... Kies je taal. Sluiten disk erase failed with the error could not unmount disk Meer informatie View this message in English Je gebruikt YouTube in het Nederlands. Je kunt deze

Disk Erase Failed With The Error Input Output Error

voorkeur hieronder wijzigen. Learn more You're viewing YouTube in Dutch. You can change this preference below. Sluiten Ja, nieuwe versie behouden Ongedaan maken Sluiten Deze video is http://www.stellarinfo.com/blog/couldnt-unmount-disk-error-mac/ niet beschikbaar. WeergavewachtrijWachtrijWeergavewachtrijWachtrij Alles verwijderenOntkoppelen Laden... Weergavewachtrij Wachtrij __count__/__total__  Fix: "Disk Erase Failed With The Error: Invalid Request" WhyNotVideo211 AbonnerenGeabonneerdAfmelden709709 Laden... Laden... Bezig... Toevoegen aan Wil je hier later nog een keer naar kijken? Log in om deze video toe te voegen aan een afspeellijst. Inloggen Delen Meer Rapporteren Wil je een https://www.youtube.com/watch?v=u6dnYe7TDMQ melding indienen over de video? Log in om ongepaste content te melden. Inloggen Transcript 41.343 weergaven 129 Vind je dit een leuke video? Log in om je mening te geven. Inloggen 130 14 Vind je dit geen leuke video? Log in om je mening te geven. Inloggen 15 Laden... Laden... Transcript Het interactieve transcript kan niet worden geladen. Laden... Laden... Beoordelingen zijn beschikbaar wanneer de video is verhuurd. Deze functie is momenteel niet beschikbaar. Probeer het later opnieuw. Gepubliceerd op 20 dec. 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"? I did, and it gave me a headache. I found the solution so I wanted to make it easy for everyone else. Hope this video helps!This could also go the the error: Disk Erase Failed With The Error and/or Invalid Request but usually googled through "disk utility disk erase failed with th

to Disk erase failed. Couldn't unmount disk, then you may have to force an unmount through the terminal. Launch up Terminal.app (through /Applications/Utilities or through a Spotlight search). Then paste in the command: http://technology.siprep.org/fix-for-disk-erase-failed-couldnt-unmount-disk/ diskutil list to list out the different disks. You should see some disks appear like /dev/disk0, /dev/disk1, /dev/disk2. Find the one you want to force unmount. For this example, let's say it's /dev/disk2. Run a command similar to http://osxdaily.com/2013/06/14/resolve-a-couldnt-unmount-disk-error-in-disk-utility/ 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). You should not physically unplug the drive. You should now be able to erase disk erase the drive. Author Alan SiuPosted on April 13, 2015Tags disk utility, diskutil, erase drive, mac, unmount 30 thoughts on “Fix for disk erase failed couldn't unmount disk” Randall says: July 14, 2015 at 9:12 am This worked perfectly for me! After searching for a very long time through forums of people suggesting basic things or trying to make others feel ignorant this solution worked! Thank you so much. I now have a useable disk where before disk erase failed it would not mount and could not be formatted or erased. Running OS X 10.9.5. I will be linking this solution to other forums in the future. http://technology.siprep.org/fix-for-disk-erase-failed-couldnt-unmount-disk/ Reply Bobby says: October 9, 2015 at 5:17 pm Excellent post! It worked the 1st time for me, and i also had to stumble across the interweb minefield before finding this solution. Thank you ! -Bobby Reply Lissett says: October 11, 2015 at 10:19 am Worked for me as well! Thank you so much 🙂 Very clear instructions! Reply Jason says: November 5, 2015 at 8:50 am I tried this method, but now it says "Forced unmount of disk2 failed: at least one volume could not be unmounted" Please help, I would like to erase my hard drive so i can do a clean install of el Capitan Reply Alan Siu says: November 5, 2015 at 9:04 am Odd. I've never seen that. I did Google your error, and came across this workaround. 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 type anything. Do you know what might be causing this? Reply Alan Siu says: December 11, 2015 at 12:11 pm In the terminal, there's no visual feedback for passwords. Just keep typing your passw

halt whatever the attempted task is right in its tracks. 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 what the problem is. 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 there instead. 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 - which they all do. This will allow you to fix the problem, regardless of the cause, by one of two means, the first is a sure-thing to fix the issue, while the other only works sometimes. We'll cover both with a bit of explanation. Resolve the Unmount Error with a USB Boot Drive This is the recommended method because it should always fix the error. 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 drives or just recovery drives, the important thing is they are bootable and separate from the primary boot disk that stores the installed OS: Attach the USB boot drive to the Mac and reboot Hold down the OPTION key during boot, then select the attached boot drive (typically has an orange icon at the boot menu) At the boot menu, choose "Disk Utility" (if using an Installer disk, pull down the "Utilities" menu to access Disk Utility) Go to "First Aid" and verify the disk, then repair if needed Now perform the original task that threw the "Couldn't Unmount" error I ran into this twice recently, first when attempting to modify partitions on a drive, which came right along with a separate "partition failed" error, and again was triggered when attempting to format those partitions. The above steps did the trick and everything was working again as expected. 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 without a separate boot drive some of these errors would be unresolvable. Such boot drives are easy to create on your own, here are instructions for ma

 

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