Jimmy_R
Level 1 (0 points)

Q: Repairing bootcamp core storage issue

I am having an issue with my iMac.  It is a late 2013 model with a 3 TB fusion drive.  While trying to remove and start over on a windows bootcamp partition, there was a crash on the windows side and now I can not remove the partitions or run bootcamp.

 

I have tried running all the terminal commands in all the different threads I could find.

iMac (27-inch, Late 2013), OS X Yosemite (10.10)

Posted on Oct 27, 2014 4:22 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (24,738 points)
Safari
A:

Re-format the volume using FAT32 as diskutil eraseVolume fat32 BOOTCAMP disk0s4

 

I will usually provide a reference for commands as follows. If you do not need them for future commands I can remove them if you like. In general it helps with unfamiliar commands before they are executed.

 

diskutil eraseVolume

Usage:  diskutil eraseVolume format name MountPoint|DiskIdentifier|DeviceNode

Completely erase a disk (partition or whole), laying down a new file system

volume.  Ownership of the affected disk is required.  Format is the specific

file system personality name (or alias) you want to erase it as (JHFS+, etc.).

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

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

cannot erase the boot volume.

Example: diskutil eraseVolume JHFS+ UntitledHFS /Volumes/SomeDisk

 

diskutil listFilesystems

Formattable file systems

 

These file system personalities can be used for erasing and partitioning.

When specifying a personality as a parameter to a verb, case is not considered.

Certain common aliases (also case-insensitive) are listed below as well.

 

-------------------------------------------------------------------------------

PERSONALITY                     USER VISIBLE NAME                             

-------------------------------------------------------------------------------

ExFAT                           ExFAT                                         

Free Space                      Free Space                                    

  (or) free

MS-DOS                          MS-DOS (FAT)                                  

MS-DOS FAT12                    MS-DOS (FAT12)                                

MS-DOS FAT16                    MS-DOS (FAT16)                                

MS-DOS FAT32                    MS-DOS (FAT32)                                

  (or) fat32

HFS+                            Mac OS Extended                               

Case-sensitive HFS+             Mac OS Extended (Case-sensitive)              

  (or) hfsx

Case-sensitive Journaled HFS+   Mac OS Extended (Case-sensitive, Journaled)   

  (or) jhfsx

Journaled HFS+                  Mac OS Extended (Journaled)                   

  (or) jhfs+

Posted on Oct 29, 2014 3:31 AM

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Jimmy_R

Q: Repairing bootcamp core storage issue

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  • by Loner T,Solvedanswer

    Loner T Loner T Oct 29, 2014 3:31 AM in response to Jimmy_R
    Level 7 (24,738 points)
    Safari
    Oct 29, 2014 3:31 AM in response to Jimmy_R

    Re-format the volume using FAT32 as diskutil eraseVolume fat32 BOOTCAMP disk0s4

     

    I will usually provide a reference for commands as follows. If you do not need them for future commands I can remove them if you like. In general it helps with unfamiliar commands before they are executed.

     

    diskutil eraseVolume

    Usage:  diskutil eraseVolume format name MountPoint|DiskIdentifier|DeviceNode

    Completely erase a disk (partition or whole), laying down a new file system

    volume.  Ownership of the affected disk is required.  Format is the specific

    file system personality name (or alias) you want to erase it as (JHFS+, etc.).

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

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

    cannot erase the boot volume.

    Example: diskutil eraseVolume JHFS+ UntitledHFS /Volumes/SomeDisk

     

    diskutil listFilesystems

    Formattable file systems

     

    These file system personalities can be used for erasing and partitioning.

    When specifying a personality as a parameter to a verb, case is not considered.

    Certain common aliases (also case-insensitive) are listed below as well.

     

    -------------------------------------------------------------------------------

    PERSONALITY                     USER VISIBLE NAME                             

    -------------------------------------------------------------------------------

    ExFAT                           ExFAT                                         

    Free Space                      Free Space                                    

      (or) free

    MS-DOS                          MS-DOS (FAT)                                  

    MS-DOS FAT12                    MS-DOS (FAT12)                                

    MS-DOS FAT16                    MS-DOS (FAT16)                                

    MS-DOS FAT32                    MS-DOS (FAT32)                                

      (or) fat32

    HFS+                            Mac OS Extended                               

    Case-sensitive HFS+             Mac OS Extended (Case-sensitive)              

      (or) hfsx

    Case-sensitive Journaled HFS+   Mac OS Extended (Case-sensitive, Journaled)   

      (or) jhfsx

    Journaled HFS+                  Mac OS Extended (Journaled)                   

      (or) jhfs+

  • by Jimmy_R,

    Jimmy_R Jimmy_R Oct 29, 2014 5:40 PM in response to Loner T
    Level 1 (0 points)
    Oct 29, 2014 5:40 PM in response to Loner T

    Ok I think I am getting really close.  Might even be close enough to try installing windows again.  After doing this I got the following results.  Running bootcamp it then was able to start the restore and successfully removed the bootcamp partition.  I have not started the new bootcamp yet because I still have 2 Macintosh HD partitions and it says the full size of the fusion drive is not available for repartitioning.  Is there another step I should take to merge those back into one?  By the way I really do appreciate the reference to the commands.  I am going to print all of this when we are done so I will understand what is going on and how to work with it if this ever happens again.

     

    Jamess-iMac:~ jamesrobertson$ diskutil eraseVolume fat32 BOOTCAMP disk0s4

    Started erase on disk0s4 Untitled

    Unmounting disk

    Erasing

    4096 bytes per physical sector

    /dev/rdisk0s4: 1011209024 sectors in 15800141 FAT32 clusters (32768 bytes/cluster)

    bps=512 spc=64 res=32 nft=2 mid=0xf8 spt=32 hds=255 hid=3283247104 drv=0x80 bsec=1011455992 bspf=123440 rdcl=2 infs=1 bkbs=6

    Mounting disk

    Finished erase on disk0s4 BOOTCAMP

  • by Loner T,

    Loner T Loner T Oct 29, 2014 6:25 PM in response to Jimmy_R
    Level 7 (24,738 points)
    Safari
    Oct 29, 2014 6:25 PM in response to Jimmy_R

    A MBR can be created using what is now the configuration, to allow Windows to be installed. Are you installing W7 or W8/8.1?

     

    You have two entries named "Macintosh HD" but not two OSX installations. One is a Logical Volume Group, the other is an Logical Volume.

     

    Disk Utility shows it as "Macintosh HD" under a 'Macintosh HD". It is rather unfortunate that Apple's default is to name both of them the same confusing the person behind the keyboard.

     

    +-- Logical Volume Group F7493DDD-725F-4A2A-A5BD-782C14AAAC76

        =========================================================

        Name:         Macintosh HD

     

              LV Name:               Macintosh HD

              Volume Name:           Macintosh HD

  • by Jimmy_R,

    Jimmy_R Jimmy_R Oct 29, 2014 8:34 PM in response to Loner T
    Level 1 (0 points)
    Oct 29, 2014 8:34 PM in response to Loner T

    Thanks that got me back up and running. 

     

    Initially I used Windows 8.1, but after issues with that crashing do to the wireless drivers that I could not upgrade I decided to drop down to win 7.  That was when all of these issues started.  Now I see win 7 does not support usb 3 without a lot of work so I might try the win 8 install again and see if it crashes again.

     

    Thanks for all the help.

     

    Jimmy

  • by Loner T,

    Loner T Loner T Oct 29, 2014 8:45 PM in response to Jimmy_R
    Level 7 (24,738 points)
    Safari
    Oct 29, 2014 8:45 PM in response to Jimmy_R

    If you can get W7 installed, the Apple Bootcamp and Intel drivers will support USB3, as long as the hardware does.

    Thanks that got me back up and running.

    Does this mean you have W7/W8 already installed?

  • by Jimmy_R,

    Jimmy_R Jimmy_R Nov 2, 2014 6:32 PM in response to Loner T
    Level 1 (0 points)
    Nov 2, 2014 6:32 PM in response to Loner T

    I did get Win 7 to install yesterday and all updates in and backups done with no problems.  I am fully up and running again thanks to all your help.  Thanks again for the help and the references for what everything is.

     

    Jimmy

  • by Loner T,

    Loner T Loner T Nov 2, 2014 6:40 PM in response to Jimmy_R
    Level 7 (24,738 points)
    Safari
    Nov 2, 2014 6:40 PM in response to Jimmy_R

    Glad to see it work. Thanks for posting back and providing an update.

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