Pom_VZ

Q: Windows partition not bootable after update.

All, As per a few others, I'm unable to boot into windows after an update.

 

In system preferences, under startup disk, only the OS X drive is shown.

 

Screen Shot 2015-07-02 at 10.54.33 am.png

The disk utility does show my 'MacDoze' drive greyed out. This drive was changed to a 3tb unit about a year ago and has been dual booting just fine.

Screen Shot 2015-07-02 at 10.56.30 am.png

diskutil list gives me the following:-


192168015007:~ pom$ diskutil list

/dev/disk0

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *3.0 TB     disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Macintosh HD            100.2 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data MacDoze                 399.0 GB   disk0s4

   5:       Microsoft Basic Data                         0 B        disk0s5

192168015007:~ pom$

 

and diskutil cs list as below:-

192168015007:~ pom$ diskutil cs list

No CoreStorage logical volume groups found

192168015007:~ pom$

 

sudo gpt -vv -r show /dev/disk0 results below:-


gpt show: /dev/disk0: mediasize=3000592982016; sectorsize=512; blocks=5860533168

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 5860533167

       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   195797056      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

   196206696     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

   197476232         120        

   197476352   779296768      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

   976773120           0      5  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

   976773120  3318192128      4 

  4294965248  1565567887        

  5860533135          32         Sec GPT table

  5860533167           1         Sec GPT header

 

Any and all assistance appreciated.

 

Cheers.

iMac, OS X Yosemite (10.10.4)

Posted on Jul 1, 2015 6:01 PM

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Q: Windows partition not bootable after update.

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  • by Loner T,

    Loner T Loner T Jul 2, 2015 4:41 PM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 2, 2015 4:41 PM in response to Pom_VZ

    Can you a Verify disk in Gdisk utility using v option? A Disk Utility Verify/Repair should also work.

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 2, 2015 5:11 PM in response to Loner T
    Level 1 (0 points)
    Jul 2, 2015 5:11 PM in response to Loner T

    Output below. I do have the other terminal window open with gdisk paused at the "Last Sector" request.

     

    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): v

     

    Problem: partition 5 ends before it begins.

     

    Warning! Mismatched GPT and MBR partition! MBR partition 4, of type 0x07,

    has no corresponding GPT partition! You may continue, but this condition

    might cause data loss in the future!

     

    Identified 2 problems!

  • by Loner T,

    Loner T Loner T Jul 2, 2015 5:20 PM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 2, 2015 5:20 PM in response to Pom_VZ

    The Gdisk steps I gave you and gave you the value in step 8 did not work, because of the entry at GPT 5. It is not a valid GPT entry. Let us delete it.

     

    sudo gdisk /dev/disk0

    p

    d

    5

    p

    w

    y

     

    Reboot

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 2, 2015 8:14 PM in response to Loner T
    Level 1 (0 points)
    Jul 2, 2015 8:14 PM in response to Loner T

    Deleting that bogus data has returned my Windows partition. I now have ability to boot either OS.

     

    1,000 thanks, as I needed to get hold of that data again.

     

    Gdisk output now looks like this:-

     

    Command (? for help): p

    Disk /dev/disk0: 5860533168 sectors, 2.7 TiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 00000E82-4754-0000-7204-0000CB700000

    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 141 sectors (70.5 KiB)

     

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

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640       196206695   93.4 GiB    AF00  Customer

       3       196206696       197476231   619.9 MiB   AB00  Recovery HD

       4       197476352       976773119   371.6 GiB   0700  BOOTCAMP

     

    For anybody interested in how that looks in Windoze:-

     

    Screen Shot 2015-07-03 at 1.10.49 pm.png

    1,000 thanks Loner T for the assistance.

     

    Let me know if I should clean this up to reduce the likelihood of any more issues in the future.

     

    Ta.

  • by Loner T,

    Loner T Loner T Jul 2, 2015 8:48 PM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 2, 2015 8:48 PM in response to Pom_VZ

    Can you post the output of

     

    sudo gpt -vv -r show /dev/disk0

     

    My concern is the discrepancy between GPT (371.6G) and C: (1953.83GB) and the out-of-sync GPT and MBR.

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 2, 2015 11:59 PM in response to Loner T
    Level 1 (0 points)
    Jul 2, 2015 11:59 PM in response to Loner T

    More than happy to do anything to close this out.

     

    As requested:-

     

    sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=3000592982016; sectorsize=512; blocks=5860533168

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 5860533167

           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   195797056      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

       196206696     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

       197476232         120        

       197476352   779296768      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

       976773120  3318192128      4 

      4294965248  1565567887        

      5860533135          32         Sec GPT table

      5860533167           1         Sec GPT header

  • by Loner T,

    Loner T Loner T Jul 3, 2015 7:49 AM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 3, 2015 7:49 AM in response to Pom_VZ

    Can you post the output of

     

    sudo gdisk /dev/disk0

    p

    q

     

    Post the output.

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 3, 2015 4:12 PM in response to Loner T
    Level 1 (0 points)
    Jul 3, 2015 4:12 PM in response to Loner T

    Disk /dev/disk0: 5860533168 sectors, 2.7 TiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 00000E82-4754-0000-7204-0000CB700000

    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 141 sectors (70.5 KiB)

     

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

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640       196206695   93.4 GiB    AF00  Customer

       3       196206696       197476231   619.9 MiB   AB00  Recovery HD

       4       197476352       976773119   371.6 GiB   0700  BOOTCAMP

     

    Command (? for help): q

    192168015007:~ pom$

  • by Loner T,

    Loner T Loner T Jul 3, 2015 8:42 PM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 3, 2015 8:42 PM in response to Pom_VZ

    Does the GPT output still show two entries with index 4?

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 3, 2015 10:30 PM in response to Loner T
    Level 1 (0 points)
    Jul 3, 2015 10:30 PM in response to Loner T

    Yes it does.

     

    192168015007:~ pom$ sudo gpt -vv -r show /dev/disk0

    gpt show: /dev/disk0: mediasize=3000592982016; sectorsize=512; blocks=5860533168

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 5860533167

           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   195797056      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

       196206696     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

       197476232         120        

       197476352   779296768      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

       976773120  3318192128      4 

      4294965248  1565567887        

      5860533135          32         Sec GPT table

      5860533167           1         Sec GPT header

    192168015007:~ pom$

  • by Loner T,

    Loner T Loner T Jul 4, 2015 8:09 AM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 4, 2015 8:09 AM in response to Pom_VZ

    GPT4 #1 is ~371 GB. There is no MBR corresponding to this.

     

    GPT4 #2 is ~1582 GB. There is no MBR corresponding to this.

     

    The blank space after that has no GPT, but the MBR shows 1565567887 = ~746 GB unallocated space.

     

    MBR#4 is 4097488896 ~ 1953 GB.

     

    My recommendation is to delete GPT#4 (both) entries and create a single GPT#4 matching the MBR to avoid future issues. It would also make sense to make a good backup as it is now and one after the change.

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 5, 2015 3:14 AM in response to Loner T
    Level 1 (0 points)
    Jul 5, 2015 3:14 AM in response to Loner T

    OK. I'll get backups completed and delete the two GPT4's.

     

    I'll need some start / end / offset values to re-instate GPT4 to match the intended configuration.

     

    Will let you know when data is backed up.

     

    Thanks.

  • by Loner T,

    Loner T Loner T Jul 5, 2015 5:49 AM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 5, 2015 5:49 AM in response to Pom_VZ

    Your GPT should look like the following

     

    gpt show: /dev/disk0: mediasize=3000592982016; sectorsize=512; blocks=5860533168

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 5860533167

           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   195797056      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

       196206696     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

       197476232         120       

       197476352  4097488896      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      4294965248  1565567887       

      5860533135          32         Sec GPT table

      5860533167           1         Sec GPT header

     

    This would match

     

    Disk: /dev/disk0 geometry: 97451/255/63 [1565565872 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 -  195797056] HFS+      

    3: AB 1023 254  63 - 1023 254  63 [ 196206696 -    1269536] Darwin Boot

    *4: 07 1023 254  63 - 1023 254  63 [ 197476352 - 4097488896] HPFS/QNX/AUX

     

    You may not be able to do much with the space (~745GB)  after GPT4, due to the Windows 2TB limit. You can use it for storing OS X files.

  • by Pom_VZ,

    Pom_VZ Pom_VZ Jul 26, 2015 4:21 AM in response to Loner T
    Level 1 (0 points)
    Jul 26, 2015 4:21 AM in response to Loner T

    Well, it took some time, but the backups are all done.

     

    I think I may have stuffed up getting the get gpt fixed up, and deleted mbr #4?

     

    I did the following:-

    sudo gdisk /dev/disk0

    p

    d

    4

    p

    w

    y

     

    Current status:-

     

    192168015006:~ pom$ sudo gpt -vv -r show /dev/disk0

    gpt show: /dev/disk0: mediasize=3000592982016; sectorsize=512; blocks=5860533168

    gpt show: /dev/disk0: Suspicious MBR at sector 0

    gpt show: /dev/disk0: Pri GPT at sector 1

    gpt show: /dev/disk0: Sec GPT at sector 5860533167

           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   195797056      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

       196206696     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

       197476232         120      

       197476352  4097488896      4  MBR part 7

      4294965248  1565567887      

      5860533135          32         Sec GPT table

      5860533167           1         Sec GPT header

     

    Disk /dev/disk0: 5860533168 sectors, 2.7 TiB

    Logical sector size: 512 bytes

    Disk identifier (GUID): 00000E82-4754-0000-7204-0000CB700000

    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 779296909 sectors (371.6 GiB)

     

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

       1              40          409639   200.0 MiB   EF00  EFI system partition

       2          409640       196206695   93.4 GiB    AF00  Customer

       3       196206696       197476231   619.9 MiB   AB00  Recovery HD

     

    I no longer have the 2nd #4 in the gpt list.

     

    Your further assistance would be appreciated. (In step by step, idiot proof, detail!)

     

    PS. Not re-booted yet, if that makes a difference.

  • by Loner T,

    Loner T Loner T Jul 26, 2015 5:31 AM in response to Pom_VZ
    Level 7 (24,307 points)
    Safari
    Jul 26, 2015 5:31 AM in response to Pom_VZ

    This

    197476352  4097488896      4  MBR part 7

     

    and

    *4: 07 1023 254  63 - 1023 254  63 [ 197476352 - 4097488896] HPFS/QNX/AUX

     

    match in start/size.

     

    The following commands changes the type of the partition. We will change partition 4 to be Microsoft Basic Data.

     

    In Gdisk main menu

     

    type 't' - change partition type

    type 4 - we want to change partition 4

    type 0700 - Microsoft Basic Data

    type p

    type w

    type y

     

    Reboot and test.

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