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Disk Utility Reformat Error


What would happen if I created an account called 'root' Physically locating the server Why don't you connect unused hot and neutral wires to "complete the circuit"? Did you in fact reformat the drive before trying to encrypt it? 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 If I click the Partition tab, I get the spinning color wheel and Option Command esc shows that Disk Utility is not responding. navigate here

The other reason you might want to get DW is if the data on the drive is important enough to justify the expense. Error came up, can't unmount disk. The drive DW comes on will boot older Macs, including PPC models, so creating an emergency disk for your current system is a good idea. 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. https://discussions.apple.com/thread/5812340?tstart=0

Disk Utility Reformat External Drive

Reply joe says: May 4, 2016 at 5:58 am Thank you! Disk Utility can be run from the external drive. You can read the following blog post on HFS drive corruption.

Reply ↓ ali November 10, 2014 at 9:05 pm i follow the instructions but when i repeat the up key and enter, i got a new error: permission denied. I was able to run $ diskutil unmount /dev/disk2 $ diskutil mountDisk $ cat /dev/random > /dev/disk2 and bingo it worked. Volgende Solution Disk Erase Failed with error Couldn't unmount disk mac - Duur: 3:28. Disk Utility Erase Greyed Out Amazing!

Using DU in Recovery Mode, in the Left Hand Pane (LHP), in addition to the single line "1TB Seagate USB 3.0 Cable", below that I can now see a horizontal line Mac Disk Utility Reformat External Drive This worked http://www.macissues.com/2014/04/05/how-to-fix-deep-formatting-problems-with-os-x-drives/ The instructions are clear & simple, no Terminal experience required. You said, "no go," but I'm not sure what that meant.

the above command will initialize the master boot record.

Include as many details as possible. Disk Utility Erase Free Space It was a no go though Helpful (0) Reply options Link to this post by Kappy, Kappy Jan 21, 2014 2:17 PM in response to studio_ Level 10 (271,467 points) Desktops That being said, it's always a good idea to reformat a new drive before you use it to be sure it's initialized in the desired layout. It will look like ‘diskx' where ‘x' is an integer starting at 0.

Mac Disk Utility Reformat External Drive

Not the answer you're looking for? So when you tried to encrypt it on the Mac the encryption failed and hosed the drive. Disk Utility Reformat External Drive Inloggen Delen Meer Rapporteren Wil je een melding indienen over de video? Disk Utility Erase Then paste in the command: diskutil list to list out the different disks.

Alysha S. 9th August 2015 at 7:12 pm · Reply I've got mine booted into a Yosemite installation USB. check over here Your fix has saved me! Enjoy this tip? Since I cannot repair it (Disk Utility, DiskWarrior, TechTool Pro, DiskTools Pro & SpeedTools Utilities Pro, and Drive Genius on Mac with OS X 10.9.2 Mavericks), I just want to format Disk Utility Erase El Capitan

The commuter's journey English equivalent of the Portuguese phrase: "this person's mood changes according to the moon" Why are Exp[3] and 2 treated differently within Complex? To create your own bootable disk, refer to our blog ‘Creating a Mavericks bootable install disk'. I guess that gives me another path to investigate but if you have any new advice to offer, I would be very grateful. http://darrenmanning.com/disk-utility/disk-utility-disk-erase-failed-error-could-not-unmount-disk.html Resolve the Unmount Error with a USB Boot Drive This is the recommended method because it should always fix the error.

After about 15 minutes waiting, I unplugged and plugged back the pendrive. Disk Utility Erase Format Reply Dina B. The advantage of using Fat 32 is that the drive will also be usable on a Windows PC, supposing that necessity ever arises.

do this command to find out which device identifier your troublesome drive is: diskutil list then, if your disk is disk1, run fdisk -i -a hfs /dev/disk1 Be CERTAIN to use

I currently do not have a Time Machine BU. You can organize filters to the software so that it recovers only specific files. Jefferson Le Blanc August 1, 2015 at 5:24 pm Larry, rather than trying to erase the drive, reformat it instead. Disk Utility Erase Disabled The only thing left then was the "1TB Seagate" disk.

I left it all night and got the same result. Inloggen 15 Laden... 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 weblink Helpful (0) Reply options Link to this post by studio_, studio_ Jan 21, 2014 3:17 PM in response to Kappy Level 1 (2 points) Jan 21, 2014 3:17 PM in response

Yes, add me to your mailing list. This should force unmount the entire physical disk and all its related volumes: 3) Attempt again to perform whichever task caused your ‘Couldn’t Unmount Disk' error. (For example to Erase/Partition the Jefferson Le Blanc August 4, 2015 at 11:43 am Hi Larry - I wouldn't recommend buying DiskWarrior to fix just one drive, especially as the outcome for that drive is problematic. B.

please don't leave me danglin. First run sudo diskutil list to find the relevant disk3, etc - check the size and make sure it's the right disk! Link-only answers can become invalid if the linked page changes. For older Macs running prior versions of OS X, typically anything running OS X 10.6 or earlier will have a SuperDrive, and thus shipped with a bootable DVD that can serve

Share this:PrintEmailPocketTwitterFacebookGoogleRedditPinterestTumblrLinkedInLike this:Like Loading... Reply ↓ B. I'm not denying that Western Digital drives are problematic. share|improve this answer answered Jan 26 at 16:40 tim 1012 add a comment| up vote 0 down vote I found that this worked for a USB drive to erase and format

Please let me know how should I proceed. Enter your admin password if prompted. Reply Eugene May 19, 2015 Why the software is not showing my Boot Camp partition? Reply ↓ Mav June 26, 2015 at 6:44 am Worked really well thanks a lot Reply ↓ Brad June 26, 2015 at 6:57 am After doing some research on line I

Checking the Erase tab shows everything all grayed out. Right now i have the macbook booted on the external on el capitan and I'm going to go through the whole process over again for this computer.