Lost partition space after BCA.

Question

I have just installed El Capitan successfully and created a boot camp partition using BCA (Mac - 230GB, BC - 90GB). When I booted up to installation of windows, I got this error "Windows cannot be installed to this hard disk space. Windows must be installed to a partition". I tried to "Format" the hard disk partition but I still received the same error hence I rebooted to Mac to re-partition the boot camp using BCA. I successfully "erased" the partition and went to disk utility expecting to see a 320GB in one partition. To my horror, my 320GB hard disk is now left with 230GB! The Boot camp partition is gone! How do I recover the lost partition space?Macbook Pro 15 inch mid 2010

hendosean · Answer

Have been reading a lot of threads on this but I cant seem to troubleshoot. Ran the usual few on terminal and below are the results. Appreciate if I can get some help on this! Have been working on this for more than 3 days.diskutil list/dev/disk0 (internal, physical):   #:                       TYPE NAME                    SIZE       IDENTIFIER   0:      GUID_partition_scheme                        *320.1 GB   disk0   1:                        EFI EFI                     209.7 MB   disk0s1   2:                  Apple_HFS Macintosh HD            230.2 GB   disk0s2   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3diskutil cs listNo CoreStorage logical volume groups foundsudo gpt -vv -r show /dev/disk0gpt show: /dev/disk0: mediasize&#x3D;320072933376; sectorsize&#x3D;512; blocks&#x3D;625142448gpt show: /dev/disk0: PMBR at sector 0gpt show: /dev/disk0: Pri GPT at sector 1gpt show: /dev/disk0: Sec GPT at sector 625142447      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  449635104      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC  450044744    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC  451314280  173828135          625142415         32         Sec GPT table  625142447          1         Sec GPT headersudo fdisk /dev/disk0Disk: /dev/disk0 geometry: 38913/255/63 [625142448 sectors]Signature: 0xAA55         Starting       Ending#: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------1: EE 1023 254  63 - 1023 254  63 [         1 -  625142447] &lt;Unknown ID&gt;2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

Loner T · Answer

You have two options. 1. Use Time Machine backup/erase/restore, or, 2. Use Terminal commands, lose Recovery HD temporarily, and re-install OSX to get Recovery HD back. Please pick one, and I can provide details.

hendosean · Answer

Thanks Loner T. Have been reading a lot of your instructions on this website. I will prefer to use option 1. Time machine. I have a pre capitan back up. Do I need to use a back dated one or a current back up will do?

Loner T · Answer

A current backup will work. 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 -&gt; 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 .

hendosean · Answer

I will work on your instructions and keep you posted on how it goes. Thanks!