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Disk Utility Error


If you see this error, then do the following: Press the Up arrow key in the Terminal to load and prepare the previously entered command. Looking at the details for the OS X Base System at the bottom of DU shows: Mount Point: /, Format: Mac OS Extended, Owners Enabled: Yes, Number of Folders: 12,067, Capacity: Open Menu Close Menu Apple Shopping Bag Apple Mac iPad iPhone Watch TV Music Support Search apple.com Shopping Bag : CommunitiesContact SupportSign inContentPeopleSearch Support CommunitiesNotebooksMacBook Air Please enter a title. Or, to verify the contents of the drive and fix any problems, click the Repair Disk button. navigate here

Apple Info Site Map Hot News RSS Feeds Contact Us Copyright © Apple Inc. Why not just wave a rubber chicken over the flash drive too. Then I closed the Terminal window selecting "Shell - Close Window", and opened Disk Utility, selected the drive on the left and clicked the Partition tab. And, this should be true for your other drive as well.

Disk Utility Error Codes

Since I, too, have lost data from time to time, I should follow the prescription that people living in glass houses shouldn't throw stones. One option is to use another operating system like Windows in Boot Camp, in a Virtual Machine, or on a dedicated PC to manage the drive and attempt to repartition it; I'm not denying that Western Digital drives are problematic. Rebooted to the internal drive and ran Onyx.

I think you must unlock the protected disk before you can repair it. Reply ↓ Lloyd March 6, 2015 at 1:44 am I also use a 1 TB hybrid drive from Seagate in a MacMini, two LaCie external enclosures and a Pro Book. If you can formate the drive on Windows, you can then mount it on your Mac and reformat it HFS+ if you like. Disk Utility Error Couldn't Unmount Disk Though drive defragmentation is controversial, I've found it to be useful.

Jefferson Le Blanc April 11, 2014 at 7:07 am Given how stingy they are in supporting a product you paid over $150 for, I'd say you should be sure and buy Helpful (0) Reply options Link to this post by wtobiasjr, wtobiasjr Jun 8, 2012 5:52 PM in response to Kappy Level 1 (30 points) Jun 8, 2012 5:52 PM in response I really can't get over how bad it is. May 26 by jpauljohnson Sadly, you encountered the Chicken & Egg problem ;-} You need a system running OS-X to create a bootable disk.

The disk is 256 Gb SSD. What Does Disk Utility Do I doubt it is the cause of the problem, however. Thanks for listening. I've read that HGST is well regarded by some.

Disk Utility Error Couldn't Open Device

However, before giving up, run "diskutil list" and see if there are any partitions listed for the faulty drive (there shouldnt be if the above process was run correctly).

Now switch to root in the Terminal sudo su 6. Disk Utility Error Codes When this is done, you can then try using Disk Utility to partition and format the disk for use again. Disk Utility Error Code 8 Jefferson Le Blanc June 18, 2016 at 9:37 am It appears that your system caches got corrupted at some point.

Otherwise, if Topher’s solution doesn’t work, you may have to face the probability that the drive somehow sustained irreparable damage. check over here You can then partition and format the drive to prepare it for use in OS X. Toevoegen aan Wil je hier later nog een keer naar kijken? Open Disk Utility in the Utilities folder of the HDD.2. Disk Utility Hard Drive

Answered! Another option that should work in most cases is to use the Terminal to interact with special device files to force an overwrite of the device file representing the drive. Open Disk Utility from the Utilities folder.2. http://darrenmanning.com/disk-utility/disk-utility-disk-erase-failed-error-could-not-unmount-disk.html This might result in undefined behavior for this device.

The message says to back up your files, but nobody here is explaining how to do that. Macintosh Disk Utility Reply ↓ Topher Kessler Post authorApril 7, 2014 at 7:01 pm This command should overwrite the partition table, but if the drive is working then the system should be able to This will indicate the command has captured the device before the system, and is now overwriting it.

Eject the external drive and disconnect it from the computer.

How? I don't have access to anything but a Windows PC. After flashing it (which formats it as well), the pendrive works fine. Repair Disk Failed With Disk Utility Reply ↓ B.

And finally run the script, immediately followed by attaching your drive to the Mac: ./formatdrive.sh When you do this, the script will run rapidly and output many "not permitted" or "permission I have found it: LaCie XtremKey 32 GB VID: 059f PID: 106c But how to flash it? Laden... weblink Apparently, the partition map on my SSD is damaged.

Jefferson Le Blanc June 11, 2015 at 12:54 pm Hi Brad. In fact, the only one I've had a problem with lately is an HGST drive that will mount but not boot. Reply ↓ B. Encryption was going on fine, when suddenly on 3rd day, my MCB (mid 2010) started ejecting My Book after few minutes.

Helpful (0) Reply options Link to this post by Kappy,★Helpful Kappy Jun 7, 2012 2:15 PM in response to wtobiasjr Level 10 (271,467 points) Desktops Jun 7, 2012 2:15 PM in Sorry I have no better solution to offer. Or, you can boot your system from the original Mac OS X installation CD and run Disk Utility from the Installation menu. Meer weergeven Laden...

You can accomplish the same thing by opening your PC and plugging the drive into a 2nd connector if available. Reply ↓ Georgina February 10, 2015 at 5:02 pm Hi, appreciate your post/help here. Reply ↓ MaX April 9, 2014 at 12:44 pm Thanks for your help. Apple Footer  Apple Support Using Disk Utility to verify or repair disks More ways to shop: Visit an Apple Store, call 1-800-MY-APPLE, or find a reseller.

Reply ↓ Tim Jones-Yelvington September 17, 2016 at 12:57 pm Have executed these instructions in Terminal several times and am still getting the "cant write to the last block of drive" Ha! R 4:08.59 /System/Library/Filesystems/hfs.fs/Contents/Resources/./fsck_hfs -y /dev/disk4s4 In my case, my external drive (which I use for Time Machine backups) was given the name "/dev/disk4s4", and indeed the filesystem check program (fsck_hfs) command