Lost storage space on my mac

If you are in Local Recovery, it is running from your internal disk0. diskutil will not correct the space issue. Internet Recovery allows the internal disk to be available for such operations. There are some El Capitan vagaries, but the general resizeVolume/repairDisk sequence works.

Please backup OSX before you start installing Windows again. I suggest 64-100GB for Windows.

I am having this same problem, but when I input the second command, I get this:

this is my current hard drive space: (out of 1TB)

Please do not compare the two different representations of disk space in Disk Utility.

Can you post the output of

diskutil resizeVolume disk0s2 limits

Here is an example.

diskutil resizeVolume disk0s2 limits

For device disk0s2 Macintosh HD:

Current size: 741.7 GB (741695819776 Bytes)

Minimum size: 712.3 GB (712329113600 Bytes)

Maximum size: 741.7 GB (741695819776 Bytes)

here it is:

For device disk0s2 Macintosh HD:

Current size: 999.3 GB (999345127424 Bytes)

Minimum size: 610.5 GB (610494205952 Bytes)

Maximum size: 999.3 GB (999345127424 Bytes)

Your Spotlight index is incorrect. Can you run

diskutil repairDisk disk0

diskutil repairDisk disk0

Repairing the partition map might erase disk0s1, proceed? (y/N) y

Started partition map repair on disk0

Checking prerequisites

Checking the partition list

Adjusting partition map to fit whole disk as required

Checking for an EFI system partition

Checking the EFI system partition's size

Checking the EFI system partition's file system

Checking the EFI system partition's folder content

Checking all HFS data partition loader spaces

Checking booter partitions

Checking booter partition disk0s3

Repairing file system

Checking Journaled HFS Plus volume

Checking extents overflow file

Checking catalog file

Checking multi-linked files

Checking catalog hierarchy

Checking extended attributes file

Checking volume bitmap

Checking volume information

The volume Recovery HD appears to be OK

File system check exit code is 0

Updating boot support partitions for the volume as required

Reviewing boot support loaders

Checking Core Storage Physical Volume partitions

Updating Windows boot.ini files as required

The partition map appears to be OK

Finished partition map repair on disk

Can you now check the About This Mac -> Storage ?

Still the same as before, other than me moving a few files to my external drive.

From Terminal, post the output of

df -h

Please also see Rebuild the Spotlight index on your Mac - Apple Support .

I have already rebuilt the spotlight index, but I think I should do it again.

Filesystem Size Used Avail Capacity iused ifree %iused Mounted on

/dev/disk0s2 651Gi 557Gi 94Gi 86% 146198243 24540315 86% /

devfs 185Ki 185Ki 0Bi 100% 643 0 100% /dev

map -hosts 0Bi 0Bi 0Bi 100% 0 0 100% /net

map auto_home 0Bi 0Bi 0Bi 100% 0 0 100% /home

looks to me that the 300gb I'm missing doesn't exist.

Before you do that, please run

diskutil resizeVolume disk0s2 limits

diskutil resizeVolume disk0s2 R

Please post the output of both commands.

ok here they are.

For device disk0s2 Macintosh HD:

Current size: 999.3 GB (999345127424 Bytes)

Minimum size: 609.4 GB (609408253952 Bytes)

Maximum size: 999.3 GB (999345127424 Bytes)

diskutil resizeVolume disk0s2 R

Resizing to full size (fit to fill)

Started partitioning on disk0s2 Macintosh HD

Verifying the disk

Verifying file system

Using live mode

Performing live verification

Performing live verification

Checking Journaled HFS Plus volume

Checking extents overflow file

Checking catalog file

Checking multi-linked files

Checking catalog hierarchy

Checking extended attributes file

Checking volume bitmap

Checking volume information

File system check exit code is 0

Resizing

Error: -69742: The requested size change for the target disk or a related disk is too small; please try a different disk or partition, or make a larger change

Does df -h still show the smaller size? Can you post the output of

sudo gpt -vv -r show /dev/disk0

diskutil list

yes df -h still shows the smaller size.

gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 1953525167

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 1951845952 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

1952255592 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

1953525128 7

1953525135 32 Sec GPT table

1953525167 1 Sec GPT header

diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh 999.3 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3