How to partition free space in a Mac SSD I have a Mac with a 250Go SSD. I used to have a Windows partition, but as I had no longer any use for it I wanted to free up its space.

My error was here : instead of using BootCamp helper to delete my Windows partition, I deleted the space in the Disk Utility app.

Now, I am in this situation when I open my Disk Utility:



So there are clearly 2 free spaces of 30Go each on the drive (which is weird since it says there are 251Go total, and if we sum up the 3 spaces here it gives something like 280 Go). Then I tried to partition the space like this :



Which gives me the following error:



Sorry for the French, basically it says that the starting util of the volumes I wanted to free up are mounted. So I went and tried with my terminal to find those spaces, but they are nowhere to be found :

diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *251.0 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage Macintosh HD            219.3 GB   disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

/dev/disk1 (internal, virtual):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Macintosh HD           +219.0 GB   disk1
                                 Logical Volume on disk0s2
                                 BB809D5E-5AC1-490E-8037-651B300154BD
                                 Unencrypted

/dev/disk3 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +7.5 GB     disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:                  Apple_HFS InstallESD              7.2 GB     disk3s2


Since I can't find the volumes in my diskutil list, I can't force the unmount on them. How to retrieve this space ?
Do you have something like in the screenshot in your Disk Utility app?