Q: Can't format former Boot Camp partition

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Josh99Ralla

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Q: 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

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Loner T

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A:

If you are restoring a full TM backup, it will erase and restore the entire disk. Please try and post if you get any errors when you attempt a restore. If you want to test whether it works or not...

You can erase the disk using...

diskutil eraseDisk

Usage: diskutil eraseDisk format name [APM[Format]|MBR[Format]|GPT[Format]]

MountPoint|DiskIdentifier|DeviceNode

Completely erase an existing whole disk. All volumes on this disk will be

destroyed. Ownership of the affected disk is required.

Format is the specific file system name you want to erase it as (HFS+, etc.).

Name is the (new) volume name (subject to file system naming restrictions),

or can be specified as %noformat% to skip initialization (newfs).

You cannot erase the boot disk.

Example: diskutil eraseDisk JHFS+ UntitledUFS disk3

You can format the disk using...

diskutil reformat

Usage: diskutil reformat MountPoint|DiskIdentifier|DeviceNode

Completely erase an existing volume with the same name and format as the

original. Ownership of the affected disk is required.

You cannot erase the boot volume, nor can you reformat any device which

does not have a valid file system (instead use diskutil eraseVolume).

Posted on Oct 12, 2014 9:57 AM

Q: Can't format former Boot Camp partition

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first Page 11 of 16 last

by ralphejims,

ralphejims Jul 30, 2015 11:04 AM in response to ralphejims
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Jul 30, 2015 11:04 AM in response to ralphejims

1T byte hard drive with fusion drive. The physical volume that is blank is the one with 121Gb space. disk0s2
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by Loner T,

Loner T Jul 30, 2015 11:15 AM in response to ralphejims
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Jul 30, 2015 11:15 AM in response to ralphejims

disk0s2 is part of the CS volume/volume group Macintosh HD. It is not blank. You also have a 1TB Samsung CS volume/volume group.

Can you post the output of diskutil list?
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by ralphejims,

ralphejims Jul 30, 2015 11:32 AM in response to Loner T
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Jul 30, 2015 11:32 AM in response to Loner T

I just deleted the hard drive with the command diskutil cs delete 256053B4-C324-4591-96F1-0CBAE63CF3F5. The result is the following. How do i restore the hard drive without creating further partitions. The following disk is my external drive that i use for time machine and backup.

-bash-3.2# diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group FF72BC95-BB44-4D39-A18B-6A8A340C2422
    =========================================================
    Name:         SAMSUNG
    Status:       Online
    Size:         999860912128 B (999.9 GB)
    Free Space:   4096 B (4.1 KB)
    |
    +-< Physical Volume 9363C514-E066-4D81-81ED-7AE7BE622E28
    |   ----------------------------------------------------
    |   Index:    0
    |   Disk:     disk14s2
    |   Status:   Online
    |   Size:     999860912128 B (999.9 GB)
    |
    +-> Logical Volume Family DD5A18B6-41CF-455F-9340-1995130B58F7
        ----------------------------------------------------------
        Encryption Status:       Locked
        Encryption Type:         AES-XTS
        Conversion Status:       Complete
        Conversion Direction:    -none-
        Has Encrypted Extents:   Yes
        Fully Secure:            Yes
        Passphrase Required:     Yes
        |
        +-> Logical Volume F4FB7891-388E-40BA-846B-76A8D2CF17B7
            ---------------------------------------------------
            Disk:                  -none-
            Status:                Locked
            Size (Total):          999525363712 B (999.5 GB)
            Conversion Progress:   -none-
            Revertible:            Yes (unlock and decryption required)
            LV Name:               SAMSUNG
            Content Hint:          Apple_HFSX
-bash-3.2#
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by ralphejims,

ralphejims Jul 30, 2015 11:35 AM in response to Loner T
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Jul 30, 2015 11:35 AM in response to Loner T

I have posted already 2 lists. One is the list before i deleted the hard drive. the secon is the list after i have deleted the hard drive. What else should i do in order to restore the hard drive without having partitions?
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by Loner T,

Loner T Jul 30, 2015 11:43 AM in response to ralphejims
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Jul 30, 2015 11:43 AM in response to ralphejims

Can you temporarily disconnect the TM disk? Once disconnected, post the output of

diskutil list
diskutil cs list (this is different from the first command).
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by ralphejims,

ralphejims Jul 30, 2015 12:03 PM in response to Loner T
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Jul 30, 2015 12:03 PM in response to Loner T

Ok, it will take quite a moment. around 15 mins. I have removed the TM and it is restarting through internet connection. Just be patient
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by Loner T,

Loner T Jul 30, 2015 12:05 PM in response to ralphejims
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Jul 30, 2015 12:05 PM in response to ralphejims

Take your time.
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by ralphejims,

ralphejims Jul 30, 2015 12:45 PM in response to Loner T
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Jul 30, 2015 12:45 PM in response to Loner T

It has finished restarting. This is what i got from the list:

-bash-3.2# diskutil cs list
No CoreStorage logical volume groups found
-bash-3.2#
-bash-3.2# diskutil cs list
No CoreStorage logical volume groups found
-bash-3.2#
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by Loner T,

Loner T Jul 30, 2015 12:50 PM in response to ralphejims
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Jul 30, 2015 12:50 PM in response to ralphejims

diskutil list

Do not use cs.
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by ralphejims,

ralphejims Jul 30, 2015 1:04 PM in response to Loner T
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Jul 30, 2015 1:04 PM in response to Loner T

-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 121.0 GB disk0s2
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Untitled 708.5 GB disk1s2
3: EFI NO NAME 104.9 MB disk1s3
4: EFI NO NAME 104.9 MB disk1s4
5: EFI NO NAME 104.9 MB disk1s5
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_partition_scheme *1.3 GB disk2
1: Apple_partition_map 30.7 KB disk2s1
2: Apple_HFS OS X Base System 1.3 GB disk2s2
/dev/disk3
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk3
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk4
/dev/disk5
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk5
/dev/disk6
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk6
/dev/disk7
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk7
/dev/disk8
#: TYPE NAME SIZE IDENTIFIER
0: untitled *6.3 MB disk8
/dev/disk9
#: TYPE NAME SIZE IDENTIFIER
0: untitled *2.1 MB disk9
/dev/disk10
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk10
/dev/disk11
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk11
/dev/disk12
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk12
/dev/disk13
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk13
/dev/disk14
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *1.0 GB disk14
1: DOS_FAT_16 USB Drive 1.0 GB disk14s1
-bash-3.2#
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by ralphejims,

ralphejims Jul 30, 2015 1:08 PM in response to ralphejims
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Jul 30, 2015 1:08 PM in response to ralphejims

I used a USB drive to copy the list command because safari is not responding. You will see it at the bottom of the list
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by ralphejims,

ralphejims Jul 30, 2015 1:11 PM in response to Loner T
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Jul 30, 2015 1:11 PM in response to Loner T

A new list without the USB drive

-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 121.0 GB disk0s2
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_HFS Untitled 708.5 GB disk1s2
3: EFI NO NAME 104.9 MB disk1s3
4: EFI NO NAME 104.9 MB disk1s4
5: EFI NO NAME 104.9 MB disk1s5
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_partition_scheme *1.3 GB disk2
1: Apple_partition_map 30.7 KB disk2s1
2: Apple_HFS OS X Base System 1.3 GB disk2s2
/dev/disk3
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk3
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk4
/dev/disk5
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk5
/dev/disk6
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk6
/dev/disk7
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk7
/dev/disk8
#: TYPE NAME SIZE IDENTIFIER
0: untitled *6.3 MB disk8
/dev/disk9
#: TYPE NAME SIZE IDENTIFIER
0: untitled *2.1 MB disk9
/dev/disk10
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk10
/dev/disk11
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk11
/dev/disk12
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk12
/dev/disk13
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk13
-bash-3.2#
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by Loner T,

Loner T Jul 30, 2015 1:15 PM in response to ralphejims
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Jul 30, 2015 1:15 PM in response to ralphejims

disk1 is not correct. You will need to erase it. After it is erased, you will have an EFI on disk1s0 and disk1s2 should be the entire disk (- 200MB). Post the output of the execution of the following commands.

1. diskutil erasedisk JHFS+ HDD disk1
2. diskutil cs create OSX-MacintoshLVG disk0s2 disk1s2
3. diskutil cs createVolume <UUIDFromStep2> jhfs+ "Macintosh HD" 100%
4. diskutil cs list
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by ralphejims,

ralphejims Jul 30, 2015 1:32 PM in response to Loner T
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Jul 30, 2015 1:32 PM in response to Loner T

-bash-3.2# diskutil erasedisk JHFS+ HDD disk1
Started erase on disk1
Unmounting disk
Creating the partition map
Waiting for the disks to reappear
Formatting disk1s2 as Mac OS Extended (Journaled) with name HDD
Initialized /dev/rdisk1s2 as a 931 GB case-insensitive HFS Plus volume with a 81920k journal
Mounting disk
Finished erase on disk1
-bash-3.2#
-bash-3.2# diskutil cs create OSX-MacintoshLVG disk0s2 disk1s2
Started CoreStorage operation
Unmounting disk0s2
Touching partition type on disk0s2
Adding disk0s2 to Logical Volume Group
Unmounting disk1s2
Touching partition type on disk1s2
Adding disk1s2 to Logical Volume Group
Creating Core Storage Logical Volume Group
Switching disk0s2 to Core Storage
Switching disk1s2 to Core Storage
Waiting for Logical Volume Group to appear
Discovered new Logical Volume Group "D58C9A35-0855-4F6F-BED1-D59EAC5AF28C"
Core Storage LVG UUID: D58C9A35-0855-4F6F-BED1-D59EAC5AF28C
Finished CoreStorage operation
-bash-3.2#
-bash-3.2# diskutil cs createVolume D58C9A35-0855-4F6F-BED1-D59EAC5AF28C jhfs+ "Macintosh HD" 100%
The Core Storage Logical Volume Group UUID is D58C9A35-0855-4F6F-BED1-D59EAC5AF28C
Started CoreStorage operation
Waiting for Logical Volume to appear
Formatting file system for Logical Volume
Initialized /dev/rdisk14 as a 1 TB case-insensitive HFS Plus volume with a 90112k journal
Mounting disk
Core Storage LV UUID: 24B4FC14-6C84-44F9-A78E-07502960C541
Core Storage disk: disk14
Finished CoreStorage operation
-bash-3.2#
-bash-3.2# diskutil cs list
CoreStorage logical volume groups (1 found)
|
+-- Logical Volume Group D58C9A35-0855-4F6F-BED1-D59EAC5AF28C
=========================================================
Name: OSX-MacintoshLVG
Status: Online
Size: 1120849764352 B (1.1 TB)
Free Space: 32768 B (32.8 KB)
|
+-< Physical Volume BEB1745E-9977-4A6F-9511-699A0A46A234
| ----------------------------------------------------
| Index: 0
| Disk: disk0s2
| Status: Online
| Size: 120988852224 B (121.0 GB)
|
+-< Physical Volume 0F1676BC-5711-4E4F-8BD1-40001C3B8C04
| ----------------------------------------------------
| Index: 1
| Disk: disk1s2
| Status: Online
| Size: 999860912128 B (999.9 GB)
|
+-> Logical Volume Family 085B35F7-851C-4C5C-8C4E-D444A04D4B55
----------------------------------------------------------
Encryption Status: Unlocked
Encryption Type: None
Conversion Status: NoConversion
Conversion Direction: -none-
Has Encrypted Extents: No
Fully Secure: No
Passphrase Required: No
|
+-> Logical Volume 24B4FC14-6C84-44F9-A78E-07502960C541
---------------------------------------------------
Disk: disk14
Status: Online
Size (Total): 1115351285760 B (1.1 TB)
Conversion Progress: -none-
Revertible: No
LV Name: Macintosh HD
Volume Name: Macintosh HD
Content Hint: Apple_HFS
-bash-3.2#
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by Loner T,

Loner T Jul 30, 2015 1:37 PM in response to ralphejims
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Jul 30, 2015 1:37 PM in response to ralphejims

Looks fine. Please restore from your TM backup now.
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Q: Can't format former Boot Camp partition

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by ralphejims,

by Loner T,

by ralphejims,

by Loner T,

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