AppleFred2012

Q: How to fix guid partition table?

I was trying to install Bootcamp on El Capitan. When it got to "Partitioning disk..." my Mac kernel panicked, rebooted, and now I have a "Basic Data" partition which can't be removed because Disk Utility says "Counldn't read partition map..." and if I try to run first aid it says that there are problems in the partition map that may prevent my computer from booting. I'm too scared to reboot because of that error. What can I do? This is what diskutil list says:

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Macintosh HD            400.3 GB   disk0s2

   3:                 Apple_Boot Recovery HD             784.2 MB   disk0s3

   4:         Microsoft Reserved                         134.2 MB   disk0s4

   5:                  Apple_HFS Basic Data              98.7 GB    disk0s5

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +400.0 GB   disk1

                                 Logical Volume on disk0s2

                                 5DE93344-5DC0-47A1-A1C7-BB44BD5AC046

                                 Unlocked Encrypted

 

and here is gpt show:

      start       size  index  contents

          0          1         PMBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  781905368      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  782315008    1531680      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  783846688        736        

  783847424     262144      4  GPT part - E3C9E316-0B5C-4DB8-817D-F92DF00215AE

  784109568  192733312      5  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

  976842880     262147        

  977105027         32         Sec GPT table

  977105059          1         Sec GPT header

Can somebody help? I'm doing a backup right now to prevent data loss.

Posted on Nov 29, 2015 11:47 AM

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