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Apple Computing Products:
macOS - Operating System
Unable to remove partition
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<blockquote data-quote="rapscalli" data-source="post: 1636213" data-attributes="member: 329626"><p>Hi all, I have a disk error and need to reinstall OS X.</p><p></p><p>I boot into recovery, select my language, choose disk utility. Here I see my apple drive (labelled 1 TB APPLE SSD SM1024..). Within this drive there are 2 partitions, Macintosh HD and BOOTCAMP. Macintosh HD is greyed out to signal an error. Running a repair disk in the drive gives the error "Error:Live file system repair is not supported". Trying to change the partition layout back to a single partition, (by selecting 1 partition from partition layout, format Mac OS Extended Journaled) gives the error 'Partition Failed with the error: Couldn't unmount disk.' Trying to remove the bootcamp partition gives the same error.</p><p></p><p>Trying to re-install OS X is not possible as only one disk is offered as an option to install to (the 650 MB recovery HD).</p><p></p><p>I have tried to install OS X via a USB by using these instructions.</p><p><a href="http://www.macworld.com/article/2367748/how-to-make-a-bootable-os-x-10-10-yosemite-install-drive.html" target="_blank">How to make a bootable OS X 10.10 Yosemite install drive | Macworld</a></p><p></p><p>And still get the same 'Partition Failed with the error: Couldn't unmount disk.'</p><p></p><p>Volume erase also fails with the same error</p></blockquote><p></p>
[QUOTE="rapscalli, post: 1636213, member: 329626"] Hi all, I have a disk error and need to reinstall OS X. I boot into recovery, select my language, choose disk utility. Here I see my apple drive (labelled 1 TB APPLE SSD SM1024..). Within this drive there are 2 partitions, Macintosh HD and BOOTCAMP. Macintosh HD is greyed out to signal an error. Running a repair disk in the drive gives the error "Error:Live file system repair is not supported". Trying to change the partition layout back to a single partition, (by selecting 1 partition from partition layout, format Mac OS Extended Journaled) gives the error 'Partition Failed with the error: Couldn't unmount disk.' Trying to remove the bootcamp partition gives the same error. Trying to re-install OS X is not possible as only one disk is offered as an option to install to (the 650 MB recovery HD). I have tried to install OS X via a USB by using these instructions. [url=http://www.macworld.com/article/2367748/how-to-make-a-bootable-os-x-10-10-yosemite-install-drive.html]How to make a bootable OS X 10.10 Yosemite install drive | Macworld[/url] And still get the same 'Partition Failed with the error: Couldn't unmount disk.' Volume erase also fails with the same error [/QUOTE]
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Apple Computing Products:
macOS - Operating System
Unable to remove partition
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