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Josh99Ralla Author

Level 1

1 points

Can't format former Boot Camp partition

So I stupidly erased my Boot Camp partition using Disk Utility rather than in the Boot Camp Assistant. And now I the partition is stuck as free space and i can't change it. When i select the free space in Disk Util, I can change it to Mac OS Extended and ExFAT as usual, but when I press apply, the progress bar appears for a brief second and disappears. Then it acts as if I never pressed apply; when I close the window, it says that I have unsaved changes. The free space does not appear as a drive in the left sidebar.

I have tried reinstalling OS X, I've tried returning to a time machine backup, I've verified and repaired the disk, but nothing has worked.

I'm left with 67GB of space unusable on my macbook now.

MacBook Pro with Retina display, OS X Mavericks (10.9.4)

Posted on Oct 11, 2014 9:36 AM

239 replies

Loner T

Level 9

59,513 points

Nov 7, 2014 12:01 PM in response to Baron MARTo

1. You have used only deleteVolume throughout, but I have two cs delete (not cs deleteVolume).

2. Good to see /dev/disk0 become a regular disk.

3. This is bad cut-paste from me. Here is the corrected one.

diskutil cs delete 82C44DC3-EC88-4ACE-B344-738362EEAE7E

Nov 7, 2014 12:25 PM in response to Loner T

Ok, i erase these disks:

82C44DC3-EC88-4ACE-B344-738362EEAE7E

DA966991-9CE6-4108-B738-CCE9F5B330CC

D28B755F-B6F4-49D7-8B26-9B1782F1E2E4

And now, i have this on the utility disk:

I suppose i select "Repair"?

Loner T

Level 9

59,513 points

Nov 7, 2014 12:29 PM in response to Baron MARTo

Do not use Disk Utility UI. Otherwise you will create the same problem again. Please post the output of diskutil list.

I assuem there is no diskutil cs list output.

Nov 7, 2014 12:32 PM in response to Loner T

Nothing on distill cs list.

-bash-3.2# diskutil cs list

No CoreStorage logical volume groups found

On distill list, i have this:

-bash-3.2# diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Untitled 120.5 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_HFS Untitled 2.0 TB disk1s2

3: Apple_HFS Untitled 219.9 GB disk1s4

4: Apple_HFS Untitled 800.9 GB disk1s6

/dev/disk2

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *4.0 GB disk2

1: EFI EFI 209.7 MB disk2s1

2: Apple_HFS Sans titre 3.7 GB disk2s2

/dev/disk5

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *16.0 GB disk5

1: EFI EFI 209.7 MB disk5s1

2: Apple_HFS Yosemite Install Dis... 15.7 GB disk5s2

/dev/disk6

#: TYPE NAME SIZE IDENTIFIER

0: untitled *5.2 MB disk6

/dev/disk7

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk7

/dev/disk8

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk8

/dev/disk9

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk9

/dev/disk10

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk10

/dev/disk11

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk11

/dev/disk12

#: TYPE NAME SIZE IDENTIFIER

0: untitled *6.3 MB disk12

/dev/disk13

#: TYPE NAME SIZE IDENTIFIER

0: untitled *2.1 MB disk13

/dev/disk14

#: TYPE NAME SIZE IDENTIFIER

0: untitled *1.0 MB disk14

/dev/disk15

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk15

/dev/disk16

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk16

/dev/disk17

#: TYPE NAME SIZE IDENTIFIER

0: untitled *1.0 MB disk17

/dev/disk18

#: TYPE NAME SIZE IDENTIFIER

0: untitled *6.3 MB disk18

Loner T

Level 9

59,513 points

Nov 7, 2014 12:35 PM in response to Baron MARTo

1. Erase disk0 - diskutil eraseDisk JHFS+ SSD disk0

2. Erase disk1 - diskutil eraseDisk JHFS+ HDD disk1

3. They should remain disk0 and disk1 but diskutil list is needed after step 1 and 2, to recreate the Fusion drive.

Nov 7, 2014 12:41 PM in response to Loner T

All Done.

-bash-3.2# diskutil list

/dev/disk0

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS SSD 121.0 GB disk0s2

/dev/disk1

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *3.0 TB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_HFS HDD 3.0 TB disk1s2

/dev/disk5

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *16.0 GB disk5

1: EFI EFI 209.7 MB disk5s1

2: Apple_HFS Yosemite Install Dis... 15.7 GB disk5s2

/dev/disk6

#: TYPE NAME SIZE IDENTIFIER

0: untitled *5.2 MB disk6

/dev/disk7

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk7

/dev/disk8

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk8

/dev/disk9

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk9

/dev/disk10

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk10

/dev/disk11

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk11

/dev/disk12

#: TYPE NAME SIZE IDENTIFIER

0: untitled *6.3 MB disk12

/dev/disk13

#: TYPE NAME SIZE IDENTIFIER

0: untitled *2.1 MB disk13

/dev/disk14

#: TYPE NAME SIZE IDENTIFIER

0: untitled *1.0 MB disk14

/dev/disk15

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk15

/dev/disk16

#: TYPE NAME SIZE IDENTIFIER

0: untitled *524.3 KB disk16

/dev/disk17

#: TYPE NAME SIZE IDENTIFIER

0: untitled *1.0 MB disk17

/dev/disk18

#: TYPE NAME SIZE IDENTIFIER

0: untitled *6.3 MB disk18

-bash-3.2#

Loner T

Level 9

59,513 points

Nov 7, 2014 12:50 PM in response to Baron MARTo

Looks nice and clean.

1. Create a new CS LVG and then create a volume for Macintosh HD.

2. diskutil cs create OSX-MacintoshLVG disk0s2 disk1s2

This will output a long-string (a UUID), which will be used in the next command. The order of disk0s2 and disk1s2 is critical, otherwise you will have performance problems.

3. diskutil cs createVolume Step2UUID JHFS+ "Macintosh HD" 100%

Replace the string "Step2UUID" with what you get from step 2. This will allocate 100% of your Fusion drive to Macintosh HD. If you want it to be smaller, please specify a size like "800g" or "1000g". Verify using the output of diskutil cs list.

4. Warning: Do Not use Yosemite Disk Utility till Apple release an update for DU.

5. Install/Restore OSX on Macintosh HD. I have kept the names of the LVG and LV distinct so DU will show what you are looking at correctly.

Nov 7, 2014 12:52 PM in response to Loner T

"1. Create a new CS LVG" ? A what? 😁

Loner T

Level 9

59,513 points

Nov 7, 2014 12:55 PM in response to Baron MARTo

Baron MARTo wrote:

"1. Create a new CS LVG" ? A what? 😁

Create a CS (CoreStorage) LVG (Logical Volume Group). 😉

Nov 7, 2014 1:01 PM in response to Loner T

So, i only have to tape:

diskutil cs create OSX-MacintoshLVG disk0s2 disk1s2

and

diskutil cs createVolume Step2UUID JHFS+ "Macintosh HD" 100%

After that, I have to try again, using bootcamp, to have a Windows session. Now, because of all of "this", i don't now if it was THE good solution.

Loner T

Level 9

59,513 points

Nov 7, 2014 1:10 PM in response to Baron MARTo

1. Remember to replace Step2UUID with the long string from the first command.

2. Re-install Yosemite on Macintosh HD.

3. Run Bootcamp Assistant and install Windows.

Nov 7, 2014 1:12 PM in response to Loner T

Ok for the Step2UUID with the long string from the first command, i whas in doubt with the Step one, the new CS LVG, if i have to type something.

So, let's go for the step2, "diskutil cs create OSX-MacintoshLVG disk0s2 disk1s2" 😊

Nov 7, 2014 1:27 PM in response to Loner T

Can i cry now? 😁

A one big thank you, i was above the explosion when i contact you last day, and 24H later i have all of my problems resolved, with calm.

Very cool attitude man, and thanks too to be patient with my english. 🙂

Loner T

Level 9

59,513 points

Nov 7, 2014 1:32 PM in response to Baron MARTo

Baron MARTo wrote:

Can i cry now? 😁

A one big thank you, i was above the explosion when i contact you last day, and 24H later i have all of my problems resolved, with calm.

Very cool attitude man, and thanks too to be patient with my english. 🙂

If you run into problems in the future, you know how to fix them. 😉. BTW, my French is horrible. My friends make fun of my accent.

Do you want to post the output of diskutil cs list and diskutil list for verification?

Nov 7, 2014 1:40 PM in response to Loner T

Ok, no problem but i would tell you this tomorrow.

I already launch the Time Machine transfert and it will take 12 hours...

À demain! 😉

Can't format former Boot Camp partition