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I'm running OS X 10.11.6 and I want to create a new partition on my disk (disk0).

Is there a way to first resize the disk to make some space and then add a new partition? When I boot from this disk I get an error message in disk utility. And when I use the Recovery Volume I cannot resize the "pie chart" in disk utility.

$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *256.1 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:          Apple_CoreStorage Mac SSD                 255.1 GB   disk0s2
   3:                 Apple_Boot Recovery HD             784.2 MB   disk0s3
/dev/disk1 (internal, virtual):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:                  Apple_HFS Mac SSD                +254.7 GB   disk1
                                 Logical Volume on disk0s2
                                 CC5EA835-07C6-4481-8114-493AD10988B7
                                 Unlocked Encrypted

$ gpt -r show disk0
gpt show: disk0: Suspicious MBR at sector 0
      start       size  index  contents
          0          1         MBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6         
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  498176832      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  498586472    1531680      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  500118152          7         
  500118159         32         Sec GPT table
  500118191          1         Sec GPT header
  • So I think it didn't work because the volume was encrypted with FileVault. – jeps44 Jul 4 at 16:57

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