IMac – Can’t delete partitions after attempting BOOTCAMP on the iMac 5k

bootcampcore-storageimac

I recently tried to install a bootcamp instance of Win 7. The install failed for some reason. This left me with a partition that I can not access via Disk Utility enter image description here

If you notice..the +- can not be selected and hence I can't delete the partition and recover the space on my drive

I tried to follow the instructions posted here by klanomath but have had no success.

It could be because I have 2 CoreStorage logical volume groups about which I have no clue as to what it is

Klanomath…can you please help me out???

diskutil list–

diskutil list

diskutil cs list–

diskutil cs list

sudo gpt -r -vv /dev/disk1–

enter image description here

Best Answer

Something went totally wrong and your Logical Volume Group is fragmented. You have to rebuild your Fusion Drive from scratch:

Preparation:

Backup "Macintosh HD" to an external drive with Time Machine
Detach any external drive (especially your external Time Machine backup drive)
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 5 min (presenting a small animated globe) to boot into a recovery netboot image which usually is loaded from an apple/akamai server.

I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.

Alternatively you may start from a bootable installer thumb drive (Yosemite) or a thumb drive containing a full system (Yosemite).

Rebuild Fusion Drive

Booted to Internet Recovery Mode open Utilities → Terminal in the menubar and enter:
diskutil cs list to get the CoreStorage listing.
Copy the second Logical Volume Group UUID, it's the seventh listed in the listing of diskutil cs list.
Then delete the second Logical Volume Group with diskutil cs delete LVG2UUID.
In your case: diskutil cs delete E0E4516A-DE3A-4B62-BE6A-855A760F5E3E
Copy the Logical Volume UUID it's the sixth UUID listed
delete the Logical Volume with diskutil cs deleteVolume LVUUID.
In your case: diskutil cs deleteVolume 00CDC215-F00D-4AD4-BA78-A2B220278688
Copy the first Logical Volume Group UUID, it's the first listed in the listing of diskutil cs list.
Then delete the first Logical Volume Group with diskutil cs delete LVGUUID.
In your case: diskutil cs delete 8FCBCB92-43CC-45A2-A058-58CAF79B93B4
Enter exit and quit 'Terminal'
Open 'Disk Utility'. Enter 'Ignore' if you are asked to fix the drives.
Choose your SSD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~121 GB

Example:
Beware! Since I took the screenshots in a virtual machine which couldn't be booted to Internet Recovery Mode i had to create two example disks with different disk identifiers and sizes. So don't use my UUIDs and disk identifiers recreating your Fusion Drive.
Choose your HDD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~3 TB

Example:
Quit Disk Utility and open Terminal
Enter diskutil list

Example (your disk identifiers and sizes are different of course: Your volume SSD probably has the Identifier disk0s2 and the size 121 GB and your volume HDD probably has the Identifier disk1s2 and the size 3.0 TB):
Enter diskutil cs create "Name" IdentifierSSD IdentifierHDD
In your case probably diskutil cs create "Macintosh HD" disk0s2 disk1s2.

Copy the resulting LVGUUID

Example:
Enter diskutil cs CreateVolume LVGUUID jhfs+ "Macintosh HD" 100%.

Example:
Enter diskutil cs list
Check the size of your Logical Volume. It should have the size ~3.121 TB

Example:
Quit Terminal
Open 'Disk Utility' and check your newly created volume for errors
Quit 'Disk Utility'

Restoring "Macintosh HD" from Time Machine backup (alternatively you may reinstall OS X and migrate your users and apps - see below)

Attach your external Time Machine backup drive or check this answer if you use NAS or another network share.
Open 'Restore from Time Machine Backup'
Choose the appropriate Time Machine backup and restore your system
The messages on your screen may differ slightly (different names and backup source)
Reboot to your restored system.
Unmount and detach your Time Machine backup drive
Open 'Terminal' and enter 'diskutil list'
Check if your 'Recovery HD' is listed.
If your 'Recovery HD' is missing, usually reinstalling your current system with the latest available system installer (e.g. 'Install OS X Yosemite (10.10.2)' if Yosemite is currently installed) will recreate it without loosing any data. AFAIK Recovery Partition Creator 3.8 will NOT create a Recovery HD on CoreStorage volumes.
After reinstalling the system with the latest available system installer open App Store and install the latest security fixes.

Reinstalling Yosemite from scratch and migrating apps & data from Time Machine backup

Choose "Reinstall OS X"
Choose "Macintosh HD" as destination disk
after the download, installation and a restart the Setup Assistant will ask you - beyond other questions - to migrate users, apps and other data
attach your Time Machine Backup drive and wait a few seconds
choose "Migrate from Time Machine backup" (or something similar - i don't remember the precise message.)
finish the migration
start App Store.app and install the latest updates.

Related Solutions

I think I messed up the Fusion Drive on the 1TB iMac (with BootCamp)

Theoretically everything is fine with your Fusion Drive. Fusion Drives look like this. Disk0 is your SSD with 121 GB and disk1 is your HDD with ~1 TB (~1.121 TB summed up).

The larger parts of your SSD (disk0s2) and your HDD (disk1s2) are pooled to a CoreStorage LVG (Fusion Drive: disk3) with a size of 967.8 GB. The rest is reserved for EFIs, a Recovery HD (alltogether ~1.3 GB) and your old Windows partition - now probably free space (~152 GB).

The logical volume 'Macintosh HD' (967.8 GB) spans disk0s2 and disk1s2. This is the first 'Macintosh HD' in picture 1. The volume 'Macintosh HD' - it's the one visible on the desktop - should ideally also have about 967.8 GB. This is the second 'Macintosh HD' in picture 1.
In fact it has only 852.67 GB (see picture 3).

In the second picture the logical volume 'Macintosh HD' is the first listed in black, the volume 'Macintosh HD' is the second listed in black, the other two 'Macintosh HD's listed in grey are the parts of your SSD and HDD dedicated to the logical volume 'Macintosh HD'.

In my opinion something went wrong after deleting various partitions with the Bootcamp Assistant/Disk Utility or in Windows.

Preparation:

Detach any external drive (especially your external Time Machine backup drive)
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into a recovery netboot image which usually is loaded from an apple/akamai server.

I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.

Alternatively you may start from a bootable installer thumb drive (preferably Mavericks or Yosemite) or a thumb drive containing a full system (preferably Mavericks or Yosemite).

Now you may either repair CoreStorage or rebuild your Fusion Drive:

'Repair CoreStorage' (not recommended):

First i would try to check the volume 'Macintosh HD' with Disk Utility. If the volume is corrupted consider a reinstall of Mac OS X.
If the volume is ok quit Disk Utility
Open Terminal and enter diskutil unmountDisk /dev/LVIdentifier and both diskutil unmountDisk /dev/DiskContainingApple_CoreStorageIdentifier
In your case: first diskutil unmountDisk /dev/disk3 then diskutil unmountDisk /dev/disk0 and diskutil unmountDisk /dev/disk1
remove the EFI NO NAME partition with gpt remove -i IndexNumberOfEFINoName DiskIdentifier:
gpt remove -i 4 disk1
Remount the CoreStorage disks and then the Logical Volume:
In your case: first diskutil mountDisk /dev/disk0 and diskutil mountDisk /dev/disk1 and then diskutil mount /dev/disk3.

enter gpt -r -vvv show /dev/diskIdentfierOfApple_CoreStorage to get infos of your HDD CoreStorage disk.
In your case: gpt -r -vvv show /dev/disk1
It should look like this:

-bash-3.2# gpt -r -vvv show /dev/disk1
gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512;         blocks=1953525168
gpt show: /dev/disk1: PMBR at sector 0
gpt show: /dev/disk1: Pri GPT at sector 1
gpt show: /dev/disk1: GPT partition: type=C12A7328-F81F-11D2-BA4B-00A0C93EC93B, start=40, size=409600
gpt show: /dev/disk1: GPT partition: type=53746F72-6167-11AA-AA11-00306543ECAC, start=409640, size=1671210848
gpt show: /dev/disk1: GPT partition: type=426F6F74-0000-11AA-AA11-00306543ECAC, start=1671620488, size=1269760
gpt show: /dev/disk1: 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    1671210848      2 GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
1671620488       1269760      3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
1672890248     280634887
1953525135            32        Sec GPT table
1953525167             1        Sec GPT header

The free space on your HDD has 280634887 blocks. Please calculate the biggest block number dividable through 8. That's 280634880 blocks (á 512 bytes) which equals 143685058560 B or ~143.7 GB. Add the size of your HDD CoreStorage Physical Volume (852666400768 B) The result is 143685058560 B + 852666400768 B = 996351459328 B
Resize your HDD CoreStorage physical volume with diskutil cs resizeDisk HDDPVUUID newsize
In your case: diskutil cs resizeDisk 93892BE8-2B7F-4ABD-A4C3-984495DCD98D 996351459328b
Calculate the maximal size of your CoreStorage Logical Volume in diskutil cs list: (size disk0s2) + (size disk1s2) In your case that's 120988852224 B + 996351459328 B = 1117340311552 B. That should be the size of your refreshed Logical Volume Group.
Resize your Logical Volume with diskutil cs resizeVolume LVUUID LVGSize-128 MB In your case that's diskutil cs resizeVolume D237FFDC-7DA4-41D7-AC13-4CC7E5E8C0A0 1117212311552b. If you get an error (There is not enough free space...) choose a smaller size like 1117148311552b.
Quit Terminal and open Disk Utility.
Check your expanded CoreStorage Volume for errors.
Quit Disk Utility, choose your CS volume as startup disk and restart your Mac

'Rebuild Fusion Drive' (recommended if you have a Time Machine backup)

Booted to Internet Recovery Mode open Utilities → Terminal in the menubar and enter:
diskutil cs list to get the CoreStorage listing.
Copy the Logical Volume UUID, it's the fifth listed.
Now delete the Logical Volume with diskutil cs deleteVolume LVUUID.
In your case: diskutil cs deleteVolume D237FFDC-7DA4-41D7-AC13-4CC7E5E8C0A0.
Copy the Logical Volume Group UUID, it's the first listed in the listing of diskutil cs list.
Then delete the Logical Volume Group with diskutil cs delete LVGUUID.
In your case: diskutil cs delete 1EFE58BC-3613-44C4-86EE-D816F3B66E3E
Enter exit and quit 'Terminal'
Open 'Disk Utility'. Enter 'Ignore' if you are asked to fix the drives.
Choose your SSD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~121 GB

Example:
Choose your HDD and partition it: 1 Partition Mac OS X Extended (Journaled), hit the Options button and choose GUID Partiton table and hit OK and Apply.
Please check that the size is ~1 TB

Example:
Quit Disk Utility and open Terminal
Enter diskutil list

Example (your disk identifiers and sizes are different of course: Your volume SSD probably has the Identifier disk0s2 and the size 121 GB and your volume HDD probably has the Identifier disk1s2 and the size 1.0 TB):
Enter diskutil cs create "Name" IdentifierSSD IdentifierHDD
In your case probably diskutil cs create "Macintosh HD" disk0s2 disk1s2.

Copy the resulting LVGUUID

Example:
Enter diskutil cs CreateVolume LVGUUID jhfs+ "Macintosh HD" 100%.

Example:
Enter diskutil cs list
Check the size of your Logical Volume. It should have the size ~1.121 TB

Example:
Quit Terminal
Open 'Disk Utility' and check your newly created volume for errors
Quit 'Disk Utility'
Attach your external Time Machine backup drive or check this answer if you use NAS or another network share.
Open 'Restore from Time Machine Backup'
Choose the appropriate Time Machine backup and restore your system
Reboot to your restored system.
Unmount and detach your Time Machine backup drive
Open 'Terminal' and enter 'diskutil list'
Check if your 'Recovery HD' is listed.
If your 'Recovery HD' is missing, usually reinstalling your current system with the latest available system installer (e.g. 'Install OS X Mavericks (10.9.5)' if Mavericks is currently installed) will recreate it without loosing any data. AFAIK Recovery Partition Creator 3.8 will NOT create a Recovery HD on CoreStorage volumes.
After reinstalling the system with the latest available system installer open App Store and install the latest security fixes.

MacOS – Can not delete Free Space on iMac 5K: Partition doesn’t appear in CS list

Preliminary remark

Like bmike already mentioned: the path

back up the CoreStorage Volume to Time Machine
and then erase / repartition both and start over with a new fusion drive

should be preferred.

Preparation:

Detach any external drive (especially your external Time Machine backup drive)
Restart to Internet Recovery Mode by pressing alt cmd R at startup.
The prerequisites are the latest firmware update installed, either ethernet or WLAN (WPA/WPA2) and a router with DHCP activated.
On a 50 Mbps-line it takes about 4 min (presenting a small animated globe) to boot into a recovery netboot image which usually is loaded from an apple/akamai server.

I recommend ethernet because it's more reliable. If you are restricted to WIFI and the boot process fails, just restart your Mac until you succeed booting.

Alternatively you may start from a bootable installer thumb drive (Mavericks or Yosemite) or a thumb drive containing a full system (Mavericks or Yosemite).

Below I assume that the disk identifier of your Internet Recovery HD (OS X Base System) or thumb drive is disk2, disk0 is your SSD, disk1 your HDD and disk3 your CoreStorage Logical Volume.

'Repair': (not recommended because of potential data loss)

First try to check the volume 'Macintosh HD' with Disk Utility. If the volume is corrupted consider a backup - if possible - and a reinstall of Mac OS X.
If the volume is OK quit Disk Utility
Open Terminal and enter diskutil list, diskutil cs list, gpt -r -vvv show /dev/disk0 and gpt -r -vvv show /dev/disk1
with the informations found in the different listings enter diskutil unmountDisk /dev/LogicalVolumeIdentifier and both diskutil unmountDisk /dev/DisksContainingApple_CoreStorageIdentifier
In your case: first enter diskutil unmountDisk /dev/disk3, then diskutil unmountDisk /dev/disk0 and diskutil unmountDisk /dev/disk1
remove the EFI NO NAME partition with gpt remove -i IndexNumberOfEFINoName DiskIdentifier:
In your case: gpt remove -i 4 disk1
Remount the CoreStorage disks and then the Logical Volume:
In your case: first diskutil mountDisk /dev/disk0 and diskutil mountDisk /dev/disk1 and then diskutil mount /dev/disk3.

enter gpt -r -vvv show /dev/HDDApple_CoreStorageIdentfier to get verbose partition data of your HDD CoreStorage disk.
In your case: gpt -r -vvv show /dev/disk1
It should look similar to the example below:

Thomass-iMac:~ moneill$ sudo gpt -r -vv show /dev/disk1
gpt show: /dev/disk1: mediasize=1000204886016; sectorsize=512; blocks=1953525168
gpt show: /dev/disk1: PMBR at sector 0
gpt show: /dev/disk1: Pri GPT at sector 1
gpt show: /dev/disk1: 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  1409895488      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  1410305128     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  1411574664   541950471       
  1953525135          32         Sec GPT table
  1953525167           1         Sec GPT header

The free space consists of 541950471 blocks here.

Calculate the biggest block number dividable through 8. That are 541950464 blocks (á 512 bytes) which equals 277478637568 B or ~277.5 GB.
Add the size of your HDD CoreStorage Physical Volume (721866489856 B in your case).

The result is 277478637568 B + 721866489856 B = 999345127424 B
Resize your HDD CoreStorage physical volume with diskutil cs resizeDisk HDD-PVUUID newsize
In your case: diskutil cs resizeDisk 93E06B6F-E206-419D-9ED7-16426463BB3E 999345127424b
Calculate the maximal size of your CoreStorage Logical Volume (refresh diskutil cs list) = size disk0s2 + size disk1s2.
In your case that's 120988852224 B + 999345127424 B = 1120333979648 B. That should also be the size of your extended Logical Volume Group (check diskutil cs list).
Resize your Logical Volume with diskutil cs resizeVolume LVUUID LVGSize-128 MB. In your case that's diskutil cs resizeVolume DD3595D9-58B6-4745-8EC9-816F9ABE30E9 1120205979648b. If you get an error (There is not enough free space...) choose a smaller size like 1120141979648b (=LVGSize-192 MB).

Magical numbers like diskutil cs resizeVolume LVUUID 100% or diskutil cs resizeVolume LVUUID 0g sadly don't work here - at least for me.
Quit Terminal and open Disk Utility.
Check your expanded CoreStorage Volume for errors.
Quit Disk Utility, choose your now expanded CoreStorage volume as startup disk and restart your Mac

Best Answer

Related Solutions

I think I messed up the Fusion Drive on the 1TB iMac (with BootCamp)

MacOS – Can not delete Free Space on iMac 5K: Partition doesn’t appear in CS list

Related Question