Previous 1 84 85 86 87 88 Next 1,499 Replies Latest reply: Feb 11, 2016 3:07 PM by SN225 Go to original post Branched to a new discussion.
  • Csound1 Level 8 (46,992 points)

    Just a thought

  • Loner T Level 6 (17,947 points)

    10.6 has no concept of Recovery, and DU/Mavericks upgrade blindly ignores an older Bootcamp.

     

    1. Do you backups of pre-upgrade 10.6 (including possibly the older Bootcamp installation)?

    2. More than likely, the Mavericks upgrade relocated the Bootcamp volume to GPT 4, and GPT 3 became Recovery HD.

    3. Do you see a Windows as an option when Option/ALT key is used during a boot?

     

    Can you post diskutil list, gpt output? It may be as simple as a Windows Recovery to fix the 'Missing OS'. There is an explanation in this thread somewhere of a dd command to see the boot sector that Christopher wrote.

  • habloc Level 1 (0 points)

    1. I have continuous backups (also of pre-upgrades) but only with time machine. Unfortunately, as I now found out, it probably did not backup the bootcamp installation, at least I cannot find anything like that.

    3. I can see a Windows option at boottime, but chosing this option reports the error "Missing system". I tried to reinstall Windows 7, but quit the installation (without writing or changing anything) when Windows installation reported 93.6 GB free of 93.6 GB alltogether at the Windows partition.

     

    The output of diskutil, gpt:

    Bildschirmfoto 2014-05-07 um 14.02.44.png

    Does this help for giving me further hints?

  • Loner T Level 6 (17,947 points)

    In your output from Testdisk, the twelfth entry (12) at 779913216, the one after the Recovery partition, can you look in to that partition and see what shows up under the List option?

  • habloc Level 1 (0 points)

    The output from Testdisk of the 12th entry shows the following:

     

    12 entry.jpg

    I also hoped I would be able to access my needed file this way. But unfortunately I was not. But at least it was the only entry where Testdisk found anything. 

  • Loner T Level 6 (17,947 points)

    May I suggest that you look into each MS Data entry using TestDisk. It is rather unfortunate that the layout before the Mavericks upgrade is unavailable.

     

    Another option is to look at the backup (which does not have the Bootcamp backup from 10.6) and restore it to a separate external disk (preferrably of the same size as the current disk) and look at it via Testdisk and gpt/fdisk utilities and find out start/end sector numbers. Once you have these numbers, look on the current "corrupted" disk in the same locations (sectors) for files to see if they can be retrieved. If you have backup just prior to the 10.9 upgrade, that would be the best one to restore and  analyse.

     

    This is an approximate exercise, not a very exact one.

  • habloc Level 1 (0 points)

    I have looked into all MS Data entries, but the only entry that has any values is the one starting at sect. 779913216. Unfortunately all I can find there is the "users"-folder (see last reply). For the other entries TestDisk only shows the following:

     

    Bild entry 3.png

  • iJojonathan Level 1 (0 points)

    Hello Christopher,

     

    same problem is happening to me.

     

    I used both sudo command line, but results are slitly diferent from Scotch_Brawth's,

    Last login: Mon May 12 07:44:56 on ttys000

    jonathans-mbp:~ jonathanraillard$ sudo gpt -r -vv show disk0

    gpt show: disk0: mediasize=750156374016; sectorsize=512; blocks=1465149168

    gpt show: disk0: Suspicious MBR at sector 0

    gpt show: disk0: Pri GPT at sector 1

    gpt show: disk0: Sec GPT at sector 1465149167

           start        size  index  contents

               0           1         MBR

               1           1         Pri GPT header

               2          32         Pri GPT table

              34           6        

              40      409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

          409640  1249999952      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      1250409592     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      1251679128        1128        

      1251680256   117184512      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      1368864768        2048        

      1368866816    96280576      5  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      1465147392        1743        

      1465149135          32         Sec GPT table

      1465149167           1         Sec GPT header

    jonathans-mbp:~ jonathanraillard$ sudo fdisk /dev/disk0

    Disk: /dev/disk0 geometry: 91201/255/63 [1465149168 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

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

    1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

    2: AF 1023 254  63 - 1023 254  63 [    409640 - 1249999952] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [1250409592 -    1269536] Darwin Boot

    4: 0B 1023 254  63 - 1023 254  63 [1251680256 -  117184512] Win95 FAT-32

    jonathans-mbp:~ jonathanraillard$

     

    Any chance you could tell me if this is fixable, and if i should follow the same path as you showed Scotch?

     

    FYI : windows 7 stoped booting after creating a third partition(MS dos-FAT32) on my MBPro, MBP running OSX 10.9

     

    Thank you in advance.

  • iJojonathan Level 1 (0 points)

    diskutil command :

     

    jonathans-mbp:~ jonathanraillard$ diskutil list /dev/disk0

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *750.2 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            640.0 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data UBUNTU                  60.0 GB    disk0s4

       5:       Microsoft Basic Data BOOTCAMP                49.3 GB    disk0s5

    jonathans-mbp:~ jonathanraillard$

  • fourwheelin Level 1 (10 points)

    @Christopher Murphy,

     

     

    PMFJI, I have a problem similar to Scotch_Brawth.  I have a Vista Partition that no longer boots on my MacBook Pro.  I have a post here: https://discussions.apple.com/thread/4144252?tstart=0 .  I wonder if you can help me, but I am nervous at Terminal commands.  I think the partitions are just misaligned.  Apologies for such etiquette, but I don't know any other way to contact you.

  • Christopher Murphy Level 3 (555 points)

    Wrong URL. That one points to this thread.

  • Loner T Level 6 (17,947 points)

    @Jonathan... You can try settting the 4th partition to bootable, using fdisk -e /dev/rdisk0 and verify if you get a missing OS error.

  • fourwheelin Level 1 (10 points)

    Hi Christopher,

     

    Mea culpa.  The link is https://discussions.apple.com/message/25894313#25894313.  I tried replacing with an earlier version of the partition map, but I am not sure if I made issues worse.  I will continue from my original post there and dare not touch *ANYTHING* without solid advice.

  • Magiccam Level 1 (0 points)

    May I congratulate you Scotch_Brawth for bringing an intelligent problem to the table and a congratulations goes to Christopher Murphey too for solving what would otherwise be a nightmare issue.

     

    You see, I had a MAC/Win set up for the longest time and just the other day I decided to throw in Ubuntu to the mix using rEFInd to enable the Linux boot. I kind of had to as I need to unbrick my WD MyCloud box which I am desperate to dumb down and remove anything from the Debian OS that refers to WD, still no avail on that but I am sure there is a solution. Unfortunately it wont be as easy as fixing my MBR, since the CPU on the WD MyCloud is an ARMv7 and there are no easy solutions to re-installing a version of linux like we can on a main desktop with a DVD install. At this point it's a tad beyond my willingness to learn, for now, I'll revisit it later.

     

    Anyway...

     

    After installing Ubuntu I didn't try booting Windows until today and got the no boot error, the back of my mind said it must be a GRUB or MBR thing and low and behold I found this discussion and just went for it. Outstandingly easy fix for the brave, there is always the risk of bricking everything when moving partitions around, but to my surprise, it went well. If only Windows would stop forcing a reboot everytime it installs an update haha...but that's windoze for you.

     

    So I say again, well done both of you 1 for creating a problem to find the solution, it's brilliant of you. and 2 for providing a very simple straightforward approach to fixing the issue. Excellent.

     

    Well done.

  • JeffJev1741 Level 1 (0 points)

    Okay, so I've tried following a lot of the suggestions here (and elsewhere) but things aren't working out. After partitioning my drive, Bootcamp screwed up, so I deleted the extra partition I made, used rEFIt to sync the two types of partition table, and now when I try to boot into Windows it says "Mission operating system"

     

    So, here are some outputs:

     

    sudo fdisk /dev/disk0

    Disk: /dev/disk0          geometry: 60801/255/63 [976773168 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

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

    1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] <Unknown ID>

    2: AF 1023 254  63 - 1023 254  63 [    409640 -  672913512] HFS+       

    3: AB 1023 254  63 - 1023 254  63 [ 673323152 -    1269536] Darwin Boot

    *4: 07 1023 254  63 - 1023 254  63 [ 683804672 -  292968448] HPFS/QNX/AUX

     

    diskutil list /dev/disk0

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.1 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS Macintosh HD            344.5 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data BOOTCAMP                150.0 GB   disk0s4

     

    sudo gpt -r -vv show disk0

    gpt show: disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

    gpt show: disk0: Suspicious MBR at sector 0

    gpt show: disk0: Pri GPT at sector 1

    gpt show: disk0: Sec GPT at sector 976773167

          start       size  index  contents

              0          1         MBR

              1          1         Pri GPT header

              2         32         Pri GPT table

             34          6        

             40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

         409640  672913512      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      673323152    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      674592688    9211984        

      683804672  292968448      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      976773120         15        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

     

    sudo gdisk /dev/disk0

    GPT fdisk (gdisk) version 0.8.10

     

    Warning: Devices opened with shared lock will not have their

    partition table automatically reloaded!

    Partition table scan:

      MBR: hybrid

      BSD: not present

      APM: not present

      GPT: present

     

    Found valid GPT with hybrid MBR; using GPT.

     

    Command (? for help): p

    Disk /dev/disk0: 976773168 sectors, 465.8 GiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 13265745-381B-4B40-911F-972E67807321

    Partition table holds up to 128 entries

    First usable sector is 34, last usable sector is 976773134

    Partitions will be aligned on 8-sector boundaries

    Total free space is 9212005 sectors (4.4 GiB)

     

    Number  Start (sector)    End (sector)  Size       Code  Name

       1              40          409639   200.0 MiB   EF00  EFI System Partition

       2          409640       673323151   320.9 GiB   AF00  Untitled

       3       673323152       674592687   619.9 MiB   AB00  Recovery HD

       4       683804672       976773119   139.7 GiB   0700  BOOTCAMP

     

    Is this fixable? I'm currently copying from the Bootcamp HD, which I can see when booted into Mac, and backing it up to be safe.

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