KLM 605

Q: I have two Macintosh HD partitions - why?

Do you know why I have one Macintosh HD and one Macintosh HD2 partition beside the Windows one, when I start the Boot-Manager? Did Carbon Copy Cloner did it, or even Boot Camp? It must be some kind of a Recovery partion.

 

I believe it was never visible before. I realized it, when I tried to disable SIP for a moment. Many thanks.

Posted on Feb 16, 2016 4:40 AM

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Q: I have two Macintosh HD partitions - why?

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  • by Loner T,

    Loner T Loner T Feb 17, 2016 1:16 PM in response to KLM 605
    Level 7 (24,202 points)
    Safari
    Feb 17, 2016 1:16 PM in response to KLM 605

    A TM Backup for OSX is very useful. It will be an incremental backup, if you have had a previous backup on the same TM device or TC.

     

    TM does not backup Windows, so an erase of Fusion drive/restore from TM implies losing your Windows installation.

     

    Your Fusion CS LV/LVG look fine. The Recovery HD is where your issue lies.

  • by Loner T,

    Loner T Loner T Feb 17, 2016 1:17 PM in response to MrHoffman
    Level 7 (24,202 points)
    Safari
    Feb 17, 2016 1:17 PM in response to MrHoffman

    Thanks MrHoffman . Glad for your assistance.

  • by MrHoffman,

    MrHoffman MrHoffman Feb 17, 2016 1:38 PM in response to KLM 605
    Level 6 (15,627 points)
    Mac OS X
    Feb 17, 2016 1:38 PM in response to KLM 605

    KLM 605 wrote:

     

    The last CCC was made approx. one week ago. Do you think I can use it? A TimeCapsule backup is not very usefull here I guess?

     

    TM gets you hourly backups.    CCC can probably do that, too.   If you don't change much, the interval won't matter.   If you're like most folks and do create and delete files and do get mail and otherwise use your Mac, then a week is a lot of data to recreate.

     

    TM also gives you an easy way to fetch files, and it gives some backup depth — with a disk clone, you either need a lot of disks, or you had better hope you notice the problem quickly, before you rotate through all the disks in your backup disk pool.

     

    TM can get some backup redundancy, with the ability to configure two or more disks for multiple backup targets, too.  This if the TM target disk fails, or if the TM disk gets corrupted.

     

    Irrespective of what should happen with the OS X restoration, things can go wrong, and your data is valuable — and your data can end up irrecoverable, if something here goes badly wrong.  With reinstallations and repartitioning and recoveries from corruptions, things can go wrong.

     

    That's a long-winded version of "always have current backups", and don't trust any one disk or any one backup.

  • by KLM 605,

    KLM 605 KLM 605 Feb 18, 2016 12:30 PM in response to MrHoffman
    Level 1 (0 points)
    Feb 18, 2016 12:30 PM in response to MrHoffman

    Thank you so much LonerT and MrHoffman for all your help. You guys make this community special. I think it looks ok now. Here is another copy of the drives:

     

    /dev/disk0 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *121.3 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage Macintosh HD            121.0 GB   disk0s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

    /dev/disk1 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *3.0 TB     disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:          Apple_CoreStorage Macintosh HD            2.9 TB     disk1s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

       4:       Microsoft Basic Data                         108.9 GB   disk1s4

    /dev/disk2 (internal, virtual):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           +3.0 TB     disk2

                                     Logical Volume on disk0s2, disk1s2

                                     E77D8A14-BF3F-4D04-BF65-85ABF4465FA3

                                     Unencrypted Fusion Drive

    /dev/disk4 (disk image):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        +2.0 TB     disk4

       1:                        EFI EFI                     209.7 MB   disk4s1

       2:                  Apple_HFS Time Machine-Backups    2.0 TB     disk4s2

     

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group E72E09E9-3811-434B-99E7-EB9B2D317367

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

        Name:         Macintosh HD

        Status:       Online

        Size:         3011855769600 B (3.0 TB)

        Free Space:   507904 B (507.9 KB)

        |

        +-< Physical Volume 5F2484CD-8D9B-4C6A-B3E5-9B3E5B20E9A0

        |   ----------------------------------------------------

        |   Index:    0

        |   Disk:     disk0s2

        |   Status:   Online

        |   Size:     120988852224 B (121.0 GB)

        |

        +-< Physical Volume D8FFB655-86A9-4419-9ED2-FF9011054E7F

        |   ----------------------------------------------------

        |   Index:    1

        |   Disk:     disk1s2

        |   Status:   Online

        |   Size:     2890866917376 B (2.9 TB)

        |

        +-> Logical Volume Family 7A748094-6C51-4302-A626-CF45FEA7B10A

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

            Encryption Type:         None

            |

            +-> Logical Volume E77D8A14-BF3F-4D04-BF65-85ABF4465FA3

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

                Disk:                  disk2

                Status:                Online

                Size (Total):          3006000005120 B (3.0 TB)

                Revertible:            No

                LV Name:               Macintosh HD

                Volume Name:           Macintosh HD

                Content Hint:          Apple_HFS

                LVG Type:              Fusion, Sparse

     

    Thanks again.

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