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Level 1

8 points

El Captain deleted my Windows partition and I cannot reclaim the space back.

Hey guys. After upgrading to El Captain I have recently discovered that my Windows partition was erased for a reason that I don't know. I thought this was ok as I would re-install it again, yet I have come across some difficulty. In the 'About This Mac' Storage tab, there is no acknowledgement of the 60gb drive that I used for windows, yet for Mac I only have 430gb/500gb max, meaning the 60 gb is still an unknown drive. I opened up Disk Utility (image below) and as I thought there is a 60gb drive named Untitled that I cannot reclaim when I try to partition the hard drive. Furthermore, as you can see, the drive is not on the left hand side.

I am new to technology really and not great with following complicated steps, so if someone could assist me with this is a simple yet effective way I would be more than grateful!

MacBook Pro, OS X El Capitan (10.11.2)

Posted on Feb 1, 2016 11:27 AM

Best reply

Loner T

Level 9

59,471 points

Posted on Feb 1, 2016 12:38 PM

El Capitan Upgrade can cause problems with installed Windows. It may still be recoverable.

From/run Applications -> Utilities -> Terminal, triple-click each of the following highlighted lines, Copy each line using (Command+C) and Paste (Command+V) in Terminal window. Post the output and after editing it to remove any personal information.

The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

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32 replies