Q: Lost storage space on my mac
Today, I tried to install Windows 10 through Boot Camp on my MacBook Pro (Retina, Mid 2012), OS X El Capitan Version 10.11.1 with 250 GB SSD. I had around 80 GB free and I gave 40 GB for Windows and 40 GB for the mac. I got to the step within Bootcamp where it was partitioning my SSD, and I went away for a few minutes. When I came back my Macbook had restarted. I opened Disk Utility and saw that under APPLE SSD SM256E Media it says 251 GB but under Macintosh HD only 209.79 GB capacity with 47.91 GB free. It appeared to have partitioned but it hasn't and therefore I have lost some storage space.
If it hasn't partitioned, where are the missing GBs? Why is the capacity only 209.79 GB? Please, help me. Thank you!
MacBook Pro with Retina display, OS X El Capitan (10.11.1)
Posted on Nov 30, 2015 10:02 AM
Since you are in Internet Recovery, run diskutil repairDisk and check the output of diskutil cs list. If that does not work, then you may want to consider the following steps...
1. Backup OSX and all your files - Use Time Machine to back up or restore your Mac - Apple Support .
2. Boot into Internet Recovery (Command+Opt+R) - OS X: About OS X Recovery - Apple Support .
3. Click on Utilties -> Disk Utility and Erase your internal whole disk.
4. Restore OSX and your files - Use Time Machine to back up or restore your Mac - Apple Support .
This requires a separate external disk which can accommodate TM backup - Backup disks you can use with Time Machine - Apple Support .
Posted on Nov 30, 2015 5:10 PM







