12 Replies Latest reply: Dec 4, 2012 1:50 PM by Alessandro Lorenzo
Alessandro Lorenzo Level 1 Level 1 (15 points)

Hello,

 

i've two different hard drive where i do the time machine backup with encryption. I let time machine handle

the entire disk and the encryption process. But everytime i unmount the drive, osx tell me that it is unmounting

two partition and ask me to confirm it. Sometimes this doesn't work and i've to wait for minutes before unplugging

the usb cable and it sais to me that the drive was unsecurely removed. The fact is that in both disk i just

see one partition only, there is no trace of any other partition even from disk utility.

This happens on both drives and a third drive did the same too. Any other with this boring problem?

 

Thanks!


Macbook Pro 15.4, Mac OS X (10.7.2), 2.4 Ghz late 2007
  • 1. Re: Time machines encryption seen as 2 hard drives?
    baltwo Level 9 Level 9 (60,115 points)

    See Pondini's TM FAQs, for starters.

  • 2. Re: Time machines encryption seen as 2 hard drives?
    Alessandro Lorenzo Level 1 Level 1 (15 points)

    Thanks for the intersting link! Unfortunately it doesn't talk about my problem, so i still need

    to investigate it...

  • 3. Re: Time machines encryption seen as 2 hard drives?
    Linc Davis Level 10 Level 10 (118,245 points)

    Launch the Terminal application in any of the following ways:

     

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

     

    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

     

    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.

     

    Triple-click the line below to select it, then drag or copy the text — do not type it — into the Terminal window and press return:

     

    diskutil list; echo; diskutil cs list

     

    Post any lines of output that appear below what you entered — the text, please, not a screenshot.

  • 4. Re: Time machines encryption seen as 2 hard drives?
    Alessandro Lorenzo Level 1 Level 1 (15 points)

    Here is the result with the time machine backup connected!

    Just to be clear: you will see that this is a 2Tb disk that i've partitioned in two partitions, one of 1,7TB and the other of 300mb. So the problem with this is that osx told me that there are 3 partitions on that drive. On the other disk i have which is entirely dedicated to TM, and has 1 partition, it say that i have two when i unmount it.

     

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI                         209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            499.2 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     Apple_partition_scheme                        *4.7 GB     disk1

       1:        Apple_partition_map                         32.3 KB    disk1s1

       2:             Apple_Driver43                         28.7 KB    disk1s2

       3:          Apple_Driver43_CD                         71.7 KB    disk1s3

       4:         Apple_Driver_ATAPI                         28.7 KB    disk1s5

       5:         Apple_Driver_ATAPI                         71.7 KB    disk1s6

       6:              Apple_Patches                         262.1 KB   disk1s7

       7:                  Apple_HFS temp                    4.7 GB     disk1s9

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     Apple_partition_scheme                        *17.3 MB    disk2

       1:        Apple_partition_map                         32.3 KB    disk2s1

       2:                  Apple_HFS Flash Player            17.3 MB    disk2s2

    /dev/disk3

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *2.0 TB     disk3

       1:                        EFI                         209.7 MB   disk3s1

       2:                  Apple_HFS MyBook                  1.7 TB     disk3s2

       3:          Apple_CoreStorage                         305.2 GB   disk3s3

       4:                 Apple_Boot Boot OS X               134.2 MB   disk3s4

    /dev/disk4

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS MyBook TM              *304.9 GB   disk4

     

     

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group 6D78FBE5-FD4D-4EA4-8FE3-3D4FFADD7DD8

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

        Name:         MyBook TM

        Size:         305211494400 B (305.2 GB)

        Free Space:   0 B (0 B)

        |

        +-< Physical Volume 6852CB33-7935-43E5-B3AF-917B843BD595

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

        |   Index:    0

        |   Disk:     disk3s3

        |   Status:   Online

        |   Size:     305211494400 B (305.2 GB)

        |

        +-> Logical Volume Family E9562ED8-4EFD-4DA2-B565-D5E94AAFF2BC

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

            Encryption Status:       Unlocked

            Encryption Type:         AES-XTS

            Conversion Status:       Complete

            Conversion Direction:    -none-

            Has Encrypted Extents:   Yes

            Fully Secure:            Yes

            Passphrase Required:     Yes

            |

            +-> Logical Volume DB63DF21-7ECF-454B-8B58-EF81AE3304D4

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

                Disk:               disk4

                Status:             Online

                Size (Total):       304892723200 B (304.9 GB)

                Size (Converted):   -none-

                Revertible:         Yes (unlock and decryption required)

                LV Name:            MyBook TM

                Volume Name:        MyBook TM

                Content Hint:       Apple_HFS

  • 5. Re: Time machines encryption seen as 2 hard drives?
    Linc Davis Level 10 Level 10 (118,245 points)

    That output looks correct.

     

    Please read this whole message before doing anything.

    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

    The purpose of the test is to determine whether your problem is caused by third-party system modifications that load automatically at startup or login.

     

    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:
    • Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
    • When you see the gray Apple logo, release the shift key.
    • If you are prompted to log in, type your password, and then hold down the shift key again as you click  Log in.
    *Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode.

     

    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.

    The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

     

    Test while in safe mode. Same problem?

     

    After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

  • 6. Re: Time machines encryption seen as 2 hard drives?
    Alessandro Lorenzo Level 1 Level 1 (15 points)

    I've found out that the problem occurs only after i do a backup. If i connect one of the drive but i unmount it before time machine start to backup, the problem doesn't occur. I've tried to do a timemachine backup while in safe mode but seems it never start, now i will try again. This is the result of the command via terminal on another disk, before and after the backup. Seems something is different at the beginning:

     

    BEFORE:

     

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI                         209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            499.2 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk1

       1:                        EFI                         209.7 MB   disk1s1

       2:          Apple_CoreStorage                         499.7 GB   disk1s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk1s3

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     Apple_partition_scheme                        *17.3 MB    disk2

       1:        Apple_partition_map                         32.3 KB    disk2s1

       2:                  Apple_HFS Flash Player            17.3 MB    disk2s2

    /dev/disk3

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                 Apple_HFSX MyPassport TM          *499.4 GB   disk3

     

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group 5BDE6D8D-43A4-4761-AE49-68EBBD712BD6

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

        Name:         Backup

        Size:         499730309120 B (499.7 GB)

        Free Space:   0 B (0 B)

        |

        +-< Physical Volume 25D95AEC-E36A-416E-AE62-EFB7ED4D263A

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

        |   Index:    0

        |   Disk:     disk1s2

        |   Status:   Online

        |   Size:     499730309120 B (499.7 GB)

        |

        +-> Logical Volume Family 244B3518-FE91-4F56-91B8-BB02C58C6C0A

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

            Encryption Status:       Unlocked

            Encryption Type:         AES-XTS

            Conversion Status:       Complete

            Conversion Direction:    -none-

            Has Encrypted Extents:   Yes

            Fully Secure:            Yes

            Passphrase Required:     Yes

            |

            +-> Logical Volume 6B226218-53A0-4FEF-B5AE-F7EE6A9AFD43

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

                Disk:               disk3

                Status:             Online

                Size (Total):       499411537920 B (499.4 GB)

                Size (Converted):   -none-

                Revertible:         Yes (unlock and decryption required)

                LV Name:            MyPassport TM

                Volume Name:        MyPassport TM

                Content Hint:       Apple_HFSX

     

     

     

    AFTER:

     

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI                         209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            499.2 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk1

       1:                        EFI                         209.7 MB   disk1s1

       2:          Apple_CoreStorage                         499.7 GB   disk1s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk1s3

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                 Apple_HFSX MyPassport TM          *499.4 GB   disk2

     

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group 5BDE6D8D-43A4-4761-AE49-68EBBD712BD6

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

        Name:         Backup

        Size:         499730309120 B (499.7 GB)

        Free Space:   0 B (0 B)

        |

        +-< Physical Volume 25D95AEC-E36A-416E-AE62-EFB7ED4D263A

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

        |   Index:    0

        |   Disk:     disk1s2

        |   Status:   Online

        |   Size:     499730309120 B (499.7 GB)

        |

        +-> Logical Volume Family 244B3518-FE91-4F56-91B8-BB02C58C6C0A

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

            Encryption Status:       Unlocked

            Encryption Type:         AES-XTS

            Conversion Status:       Complete

            Conversion Direction:    -none-

            Has Encrypted Extents:   Yes

            Fully Secure:            Yes

            Passphrase Required:     Yes

            |

            +-> Logical Volume 6B226218-53A0-4FEF-B5AE-F7EE6A9AFD43

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

                Disk:               disk2

                Status:             Online

                Size (Total):       499411537920 B (499.4 GB)

                Size (Converted):   -none-

                Revertible:         Yes (unlock and decryption required)

                LV Name:            MyPassport TM

                Volume Name:        MyPassport TM

                Content Hint:       Apple_HFSX

  • 7. Re: Time machines encryption seen as 2 hard drives?
    Linc Davis Level 10 Level 10 (118,245 points)

    The difference is that you unmounted the Flash Player disk image.

  • 8. Re: Time machines encryption seen as 2 hard drives?
    Alessandro Lorenzo Level 1 Level 1 (15 points)

    I though it was somehow related, don't know why it mount the flash player disk and unmount it alone... i didn't notice anything! However i was able to start the backup in safe mode too and even in this mode i have the problem!

  • 9. Re: Time machines encryption seen as 2 hard drives?
    Linc Davis Level 10 Level 10 (118,245 points)

    You say you have three external drives that all behave the same way. Are they all encrypted? Are they all from the same manufacturer? Do you have any drives that don't show the behavior?

  • 10. Re: Time machines encryption seen as 2 hard drives?
    Alessandro Lorenzo Level 1 Level 1 (15 points)

    Yes, this happens only with the encryption activated.

     

    One is a mystudio raid from western digital, with two partition and one has been encrypted by time machine. So this drive ask to unmount "three" partition instead of two when i unmount it.

     

    The second is mypassport studio from western digital, entirely dedicated to time machine which encrypted it. Same problem.

     

    The third one was from Iomega, entirely dedicated to encrypted time machine and again same problem. Actually the iomega is now formatted for other purpose so i have just the two western digital to test.

  • 11. Re: Time machines encryption seen as 2 hard drives?
    Linc Davis Level 10 Level 10 (118,245 points)

    I've seen one other report of this problem. I don't know what causes it. You could just ignore it. If you don't want to do that, all I can suggest is to reinstall OS X. I have no idea whether that will help. Usually it doesn't.

  • 12. Re: Time machines encryption seen as 2 hard drives?
    Alessandro Lorenzo Level 1 Level 1 (15 points)

    Thanks anyway, for now i will ignore it then i will try again some tests... in case i discover something i will post the results here!