Lost disk space after deleting bootcamp partition

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Level 1

11 points

Lost disk space after deleting bootcamp partition

Hi all

My Apple SSD shows 251 gb, but my Macintosh HD partition only has 210 gb with no free space. I have previously partitioned 40gb for BootCamp. I tried removing the bootcamp partition via bootcamp utility, but it didn't work, so I removed the partition via disk utility. I tried to combine the partition back into 251 gb, but it failed. Now, it doesn't even show there is 41gb free space. Is there anyway I can reclaim the 41 gb?

Some information from terminal:

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

Please, could anyone shed some light on this issue? Thanks in advance!

MacBook Air (13-inch Mid 2013), OS X El Capitan (10.11.6)

Posted on Aug 27, 2016 7:40 AM

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Answer 1

Loner T

Level 9

59,536 points

Aug 27, 2016 9:28 AM in response to JonahKwok

The simpler method is to use Time Machine. Please see Re: failed windows 8.1 installation through bootcamp . If you want to be adventurous, Terminal diskutil commands can also be used.

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Answer 2

JonahKwok Author

Level 1

11 points

Aug 28, 2016 8:47 AM in response to Loner T

What commands?

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Answer 3

Loner T

Level 9

59,536 points

Aug 28, 2016 9:03 AM in response to JonahKwok

You will need diskutil cs resizeVolume and diskutil repairDisk commands.

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Answer 4

JonahKwok Author

Level 1

11 points

Aug 28, 2016 9:09 AM in response to Loner T

I tried the resizing command, but as you can see my diskutil cs list has no core storage volume. It DID use to have something listed, and i tried the resizing command, but i cannot go anywhere above my curent storage of 210g. I've tried from 251g all the way down to 220g with no luck in resizing. Any tips?

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Answer 5

Loner T

Level 9

59,536 points

Aug 28, 2016 10:18 AM in response to JonahKwok

In your specific case, the safner route is the TM route.

If you want to, please backup OS X, and the order of disk slices in the following commands is critical, otherwise you will lose data .

diskutil mergePartitions jhfs+ "Macintosh HD" disk0s2 disk0s3

Now use DU to expand your partition, and reinstall OS X to get Recovery hd back that we just overwrote with mergePartitions command.

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Answer 6

JonahKwok Author

Level 1

11 points

Sep 20, 2016 5:17 AM in response to Loner T

I finally found a solution that worked for me:

1. Go to single user mode (cmd + S while rebooting)

2. Use the command "/sbin/fsck -fy", which fixes the partition error

3. Restart into INTERNET RECOVERY's disk utility (cmd option R)

4. Resize partition into 251 GB.

For some reason the newer disk utility doesn't work. Only the older 10.8 disk utility in the internet recovery worked.

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Answer 7

Loner T

Level 9

59,536 points

Sep 20, 2016 5:57 AM in response to JonahKwok

Manipulating a disk under the control of a higher version of DU, using a lower version can cause future problems. Please be vigilant and ensure good TM backups. If you can restore TM backups to an external disk and verify, even better.

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