Frank-APP
Level 1 (4 points)
Windows Software

Q: bootcamp partition no longer mountable

I was trying to get OSX to be able to read the 2 Windows partitions( named System and Data repectively). Maybe due to installations of Paragon and Tuxera, now the System partition no longer mountable in OS X,  the Data partition is still accessible.

 

I have read LonerT's instructions to other similar problems, and here are the results of those routine checks:

 

localhost:~ Leibniz$ diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Macintosh HD            199.4 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data Untitled                150.6 GB   disk0s4

   5:       Microsoft Basic Data Data                    149.4 GB   disk0s5

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +199.0 GB   disk1

                                 Logical Volume on disk0s2

                                 65526698-B9FC-4FC5-A4D6-379C934E289C

                                 Unlocked Encrypted

 

 

localhost:~ Leibniz$ sudo gdisk -l /dev/disk0

Password:

GPT fdisk (gdisk) version 1.0.1

 

Warning: Devices opened with shared lock will not have their

partition table automatically reloaded!

Partition table scan:

  MBR: protective

  BSD: not present

  APM: not present

  GPT: present

 

Found valid GPT with protective MBR; using GPT.

Disk /dev/disk0: 977105060 sectors, 465.9 GiB

Logical sector size: 512 bytes

Disk identifier (GUID): E58684AF-9C11-4E9B-BCAF-2B812CDC8F7B

Partition table holds up to 128 entries

First usable sector is 34, last usable sector is 977105026

Partitions will be aligned on 8-sector boundaries

Total free space is 2185 sectors (1.1 MiB)

 

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

   1              40          409639   200.0 MiB   EF00  EFI System Partition

   2          409640       389775583   185.7 GiB   AF05  Customer

   3       389775584       391045119   619.9 MiB   AB00  Recovery HD

   4       391045120       685228031   140.3 GiB   0700  BOOTCAMP

   5       685228032       977102847   139.2 GiB   0700  Basic data partition

localhost:~ Leibniz$ sudo gpt -r -vv show disk0

Password:

gpt show: disk0: mediasize=500277790720; sectorsize=512; blocks=977105060

gpt show: disk0: PMBR at sector 0

gpt show: disk0: Pri GPT at sector 1

gpt show: disk0: Sec GPT at sector 977105059

      start       size  index  contents

          0          1         PMBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

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

     409640  389365944      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  389775584    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  391045120  294182912      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  685228032  291874816      5  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  977102848       2179        

  977105027         32         Sec GPT table

  977105059          1         Sec GPT header

 

 

localhost:~ Leibniz$ sudo fdisk /dev/disk0

Password:

Disk: /dev/disk0 geometry: 60821/255/63 [977105060 sectors]

Signature: 0xAA55

         Starting       Ending

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

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

1: EE 1023 254  63 - 1023 254  63 [         1 -  977105059] <Unknown ID>

2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

4: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

localhost:~ Leibniz$ diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *500.3 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage Macintosh HD            199.4 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:       Microsoft Basic Data System                  150.6 GB   disk0s4

   5:       Microsoft Basic Data Data                    149.4 GB   disk0s5

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +199.0 GB   disk1

                                 Logical Volume on disk0s2

                                 65526698-B9FC-4FC5-A4D6-379C934E289C

                                 Unlocked Encrypted

 

 

 

TestDisk 7.0, Data Recovery Utility, April 2015

Christophe GRENIER <grenier@cgsecurity.org>

http://www.cgsecurity.org

 

Disk /dev/disk0 - 500 GB / 465 GiB - 977105060 sectors (RO)

Current partition structure:

     Partition                  Start        End    Size in sectors

 

1 P EFI System                    40     409639     409600 [EFI System Partition]

2 P Unknown                   409640  389775583  389365944 [Customer]

3 P Mac Boot               389775584  391045119    1269536 [Recovery HD]

Warning: number of heads/cylinder mismatches 255 (NTFS) != 1 (HD)

Warning: number of sectors per track mismatches 63 (NTFS) != 1 (HD)

4 P MS Data                391045120  685228031  294182912 [BOOTCAMP]

Warning: number of heads/cylinder mismatches 255 (NTFS) != 1 (HD)

Warning: number of sectors per track mismatches 63 (NTFS) != 1 (HD)

5 P MS Data                685228032  977102847  291874816 [Basic data partition]

]]

 

is it normal that fdisk has only 1 line? should have at least 4 here?  Testdisk can't print out filenames, reporting something is damaged...


Please HELP!! Many Many Thanks!!

Posted on Sep 4, 2016 7:24 AM

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Frank-APP

Q: bootcamp partition no longer mountable

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  • by Frank-APP,

    Frank-APP Frank-APP Sep 5, 2016 10:10 AM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 5, 2016 10:10 AM in response to Loner T

    none of combo works    I think it is due to problems with the partition, and the same problem causes the System partition not shown in Finder.

     

    At the beginning of this problem, the two NTFS partition were not even shown in "disk utility", but somehow they showed up later. Now, the System partition is in gray, with 0KB available, and not mountable.

  • by Loner T,

    Loner T Loner T Sep 5, 2016 10:50 AM in response to Frank-APP
    Level 7 (23,493 points)
    Safari
    Sep 5, 2016 10:50 AM in response to Frank-APP

    Do you have an external Apple Superdrive or a second Mac?

  • by Frank-APP,

    Frank-APP Frank-APP Sep 5, 2016 3:52 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 5, 2016 3:52 PM in response to Loner T

    no I don't, but if needed I can just buy a usb dvd drive.

     

    btw, the System partition should be far from full, so it is a problem when disk utility says it has 0kb.

     

    how do you assess the problem so far?

  • by Loner T,

    Loner T Loner T Sep 5, 2016 4:27 PM in response to Frank-APP
    Level 7 (23,493 points)
    Safari
    Sep 5, 2016 4:27 PM in response to Frank-APP

    DU relies on the underlying file system to report disk space. It is unable to read the file system, so it reports none. Once the NTFS part is corrected, it should work properly.

     

    We need to run chkdsk for the underlying file system to be corrected.

     

    Can you check the amount of available disk space on your OS X partition? We may be able to install a small Windows installation and run chkdsk from this installation and correct the issue with the System partition. The other possibility is to install a Virtual Machine using VirtualBox or VMware Fusion trial version, and run chkdsk on these file systems.

     

    My recommendation is to install a VM and try to correct the problem on System partition. You can decide if Fusion or VirtualBox is easier for you.

  • by Frank-APP,

    Frank-APP Frank-APP Sep 5, 2016 4:38 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 5, 2016 4:38 PM in response to Loner T

    oh, I have parallels desktop

     

    originally, it is because mac can not write to NTFS systems, so that I started playing with NTFS tools as mentioned above, and how this problem started

  • by Loner T,

    Loner T Loner T Sep 5, 2016 4:45 PM in response to Frank-APP
    Level 7 (23,493 points)
    Safari
    Sep 5, 2016 4:45 PM in response to Frank-APP

    Did you use Parallels to import the System partition as a VM.  Is the System partition a Bootcamp/Windows installation?

  • by Frank-APP,

    Frank-APP Frank-APP Sep 5, 2016 5:50 PM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 5, 2016 5:50 PM in response to Loner T

    Loner T wrote:

     

    Did you use Parallels to import the System partition as a VM.  Is the System partition a Bootcamp/Windows installation?

    I think it is automatically done by Parallels... Yes, System (i.e. /dev/disk0s4) is the Bootcamp partition, also verified by gdisk report in my first post.

  • by Loner T,

    Loner T Loner T Sep 5, 2016 5:58 PM in response to Frank-APP
    Level 7 (23,493 points)
    Safari
    Sep 5, 2016 5:58 PM in response to Frank-APP

    You tried Tuxera/Paragon for NTFS, Parallels has it's own NTFS driver, as does OS X. It can be very nasty with three drivers trying to compete for the same resources, without knowing what others are doing.

     

    My recommendation is to disable/remove Tuxera/Paragon, remove the Parallels VM which is using System (disk0s4), create a small VM using a Virtual disk in Parallels, then use it to run chkdsk on System (disk0s4). If it is clean, try to run Bootcamp directly, without any Parallels and check if it works properly. You may still need advanced repair options from the BC partition to correct the BCD.

  • by Frank-APP,

    Frank-APP Frank-APP Sep 6, 2016 7:19 AM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 6, 2016 7:19 AM in response to Loner T

    I have already have Tuxera/Paragon uninstalled. /dev/disk0s4 is not mounted in Mac, neither in Parallels.   If not seen, can I still chkdsk this Mac partition?

  • by Loner T,

    Loner T Loner T Sep 6, 2016 7:18 AM in response to Frank-APP
    Level 7 (23,493 points)
    Safari
    Sep 6, 2016 7:18 AM in response to Frank-APP

    Create a new VM in Parallels with 32GB Windows installation and let us check if the System partition can be repaired .

  • by Frank-APP,

    Frank-APP Frank-APP Sep 6, 2016 8:32 AM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 6, 2016 8:32 AM in response to Loner T

    Done! A 32GB Parallels Desktop Windows is created. Please advise how to proceed from here... Thanks!

  • by Csound1,

    Csound1 Csound1 Sep 6, 2016 8:35 AM in response to Frank-APP
    Level 9 (50,043 points)
    Desktops
    Sep 6, 2016 8:35 AM in response to Frank-APP

    I just want to say, thank God for Loner, I would have given up long ago

  • by Frank-APP,

    Frank-APP Frank-APP Sep 6, 2016 8:54 AM in response to Csound1
    Level 1 (4 points)
    Windows Software
    Sep 6, 2016 8:54 AM in response to Csound1

    Yes! I am very very grateful for LonerT's help!! He is indeed a God send 

  • by Loner T,

    Loner T Loner T Sep 6, 2016 9:07 AM in response to Frank-APP
    Level 7 (23,493 points)
    Safari
    Sep 6, 2016 9:07 AM in response to Frank-APP

    You are making me . Steve Jobs is a godsend.

     

    If you bring up the the small VM, can you see the System volume? You may need to 'share' the partition with the Parallels installation.

  • by Frank-APP,

    Frank-APP Frank-APP Sep 6, 2016 9:16 AM in response to Loner T
    Level 1 (4 points)
    Windows Software
    Sep 6, 2016 9:16 AM in response to Loner T

    solute to Steve Jobs

     

    oops, I might have intentionally opt off sharing the Mac drives in this PD VM   Do you know how to share them ?  

    I am googling ...

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