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 I ran Disk utility repair disk but it gave me back this message ‘Disk Utility can’t repair this disk. You must be aware of USB which stands for Universal Serial Bus and it is used to support data transfer between two devices. Reply Alan Siu says: June 26, 2016 at 8:06 am The only thing I can think of is that you're accidentally typing it wrong. have a peek at this web-site
Related Posts 8 How to deal with ‘Outlook Not Responding’ error MS Outlook lovers are Eric Simson • July 15, 2016 2 8 tips to Tune Up Safari browser performance Safari Browse other questions tagged macos hard-drive disk-utility or ask your own question. Open the command line and type the following: diskutil list (press enter to execute the command) You will see something like: 0: GUID_partition_scheme *8.0 GB disk1 Find your disk by size 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 - https://discussions.apple.com/thread/4503583?tstart=0
Reply chris says: December 8, 2016 at 12:13 pm it still fails disc erase in utility, this drive is almost brand new, it's hardly been used, is there anything else I I want my Mac to be single partitioned again. Below from Seagate:* The drive must be reformatted to HFS+ in order to use backup software for Mac or Time Machine software Nov 27, 2012 4:29 AM Helpful (0) Reply options Wife Works in LA.
Reply Nicola says: July 26, 2016 at 4:43 pm Thank you!! HELP!0Disk Utility Weirdness: Macintosh HD Cannot Be Repaired But Then Has No Problems?0Hard disk doesn't show on boot after erasing with Disk Utility1OS X can't unmount disk0Messed up 1TB Fusion Drive Please let me know how should I proceed. Error 69888 Couldn't Unmount Disk I tried formatting/erasing the 2nd HD numerous times with Disk Utility and it would continue adding time to the process up to 22+ hours.
bala 27th August 2015 at 10:48 pm · Reply Awesome. Reply Vishal February 5, 2016 Hi Tanya, Hopefully you are trying to refer USB boot drive. 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
in any way.
Resolve the Unmount Error with a USB Boot Drive This is the recommended method because it should always fix the error. Disk Erase Failed With The Error Couldn't Open Device Reply Jak says: January 29, 2015 at 5:37 pm Much appreciation! I have another external drive plugged into my TM disk. Everytime I try and format, it tells me that the drive cannot be unmounted.
Can it be any usb? Ignatius College Prep Tech Blog SI's blog about technology Fix for disk erase failed couldn't unmount disk If you're trying on a Mac using Disk Utility to erase a hard drive Disk Utility Couldn't Unmount Disk External Hard Drive Following this, attempt to Erase/Partition the drive again in Disk Utility. Partition Failed With The Error Couldn't Unmount Disk Couldn't unmount disk, then you may have to force an unmount through the terminal.
Worked perfectly after many failed "solutions". Check This Out Couldn't repair, said to reformat, but couldn't erase anything either. Firstly you need to create a boot media using Stellar Partition Manager software. Theorems demoted back to conjectures Parents disagree on type of music for toddler's listening Why wouldn't the part of the Earth facing the Sun a half year before be facing away Can't Unmount Disk Mac
You can read the following blog post on HFS drive corruption. Reply Ben says: September 17, 2016 at 2:50 pm Is there a way to work around needing a password? Actually I think the reasons are different: here probably a degraded hdd, there a wrong EFI size and therefore an unreadable or partly overwritten HFS+ volume. http://gsbook.org/unmount-disk/mac-could-not-unmount-disk-external-hard-drive.php 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
Is it possible to have 3 real numbers that have both their sum and product equal to 1? Volume Erase Failed Couldn't Open Disk Open Menu Close Menu Apple Shopping Bag Apple Mac iPad iPhone Watch TV Music Support Search apple.com Shopping Bag : CommunitiesSign inPostBrowse discussionsContact SupportSearchCommunitiesContact SupportSign inContentPeopleSearch Support CommunitiesDesktop ComputersiMac Please enter I watched the video posted here that says to partition it, but my partition button is greyed out, what can I try next?
Ekle Bu videoyu daha sonra tekrar izlemek mi istiyorsunuz? Disk was still (physically) fine but I found no way to fix the partitions, so i had to erase it and start a new backup from the beginning. –maggix Jul 28 Does gunlugger AP ammo affects all armor? Force Unmount Mac You can resize the Macintosh HD as required.
Nov 13, 2012 4:55 AM Helpful (0) Reply options Link to this post by Joe Gramm,★Helpful Joe Gramm Nov 13, 2012 5:03 AM in response to elliswicks Level 5 (6,344 points) reading and writing (I've already copied all my data off it) I can't seem to either eject the disk or unmount the partition that is mountable. A Page of Puzzling Does a byte contain 8 bits, or 9? Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the
United States Copyright © Apple Inc. Nov 27, 2012 3:45 AM Helpful (0) Reply options Link to this post by Joe Gramm, Joe Gramm Nov 27, 2012 4:29 AM in response to elliswicks Level 5 (6,344 points)