Corrupted Win7 Partition

Question

Can someone help me recover my corrupted Win7 partition please?Last login: Mon Jan 12 18:37:17 on console diskutil list/dev/disk0   #:                       TYPE NAME                    SIZE       IDENTIFIER   0:      GUID_partition_scheme                        *1.0 TB     disk0   1:                        EFI EFI                     209.7 MB   disk0s1   2:                  Apple_HFS Macintosh HD            502.0 GB   disk0s2   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3   4:       Microsoft Basic Data                         497.3 GB   disk0s4/dev/disk1   #:                       TYPE NAME                    SIZE       IDENTIFIER   0:     FDisk_partition_scheme                        *2.0 GB     disk1   1:                 DOS_FAT_32 UNTITLED                2.0 GB     disk1s1/dev/disk2   #:                       TYPE NAME                    SIZE       IDENTIFIER   0:                            GSP1RMCPRXFRER_EN_DVD  *3.3 GB     disk2 diskutil cs listNo CoreStorage logical volume groups foundgpt show: /dev/disk0: mediasize&#x3D;1000204886016; sectorsize&#x3D;512; blocks&#x3D;1953525168gpt show: /dev/disk0: Suspicious MBR at sector 0gpt show: /dev/disk0: Pri GPT at sector 1gpt show: /dev/disk0: Sec GPT at sector 1953525167       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   980461752      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC   980871392     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC   982140928   971382784      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7  1953523712        1423           1953525135          32         Sec GPT table  1953525167           1         Sec GPT header sudo fdisk /dev/disk0Disk: /dev/disk0    geometry: 121601/255/63 [1953525168 sectors]Signature: 0xAA55         Starting       Ending #: id  cyl  hd sec -  cyl  hd sec [     start -       size]------------------------------------------------------------------------ 1: EE 1023 254  63 - 1023 254  63 [         1 -     409639] &lt;Unknown ID&gt; 2: AF 1023 254  63 - 1023 254  63 [    409640 -  980461752] HFS+         3: AB 1023 254  63 - 1023 254  63 [ 980871392 -    1269536] Darwin Boot *4: 07 1023 254  63 - 1023 254  63 [ 982140928 -  971382784] HPFS/QNX/AUX

jaggboy · Answer

It says missing OS system when I click on the Windows drive at startup disk...

jaggboy · Answer

TestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orgDisk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)Current partition structure:     Partition                  Start        End    Size in sectors 1 P EFI System                    40     409639     409600 [EFI System Partitio 2 P Mac HFS                   409640  980871391  980461752 [Customer] 3 P Mac Boot               980871392  982140927    1269536 [Recovery HD]No FAT, NTFS, ext2, JFS, Reiser, cramfs or XFS marker 4 P MS Data                982140928 1953523711  971382784 [BOOTCAMP] 4 P MS Data                982140928 1953523711  971382784 [BOOTCAMP]

jaggboy · Answer

jaggboy · Answer

Scanning now...TestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orgDisk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)Analyse sector  1068433408/1953525167: 00%Warning: number of sectors per track mismatches 63 (NTFS) !&#x3D; 1 (HD)Warning: number of heads/cylinder mismatches 255 (NTFS) !&#x3D; 1 (HD)Warning: number of sectors per track mismatches 63 (NTFS) !&#x3D; 1 (HD)  MS Data               1026846776 2846023728 1819176953check_FAT: Unusual number of reserved sectors 8 (FAT), should be 1.check_FAT: Unusual media descriptor (0xf8!&#x3D;0xf0)Warning: number of heads/cylinder mismatches 64 (FAT) !&#x3D; 1 (HD)Warning: number of sectors per track mismatches 32 (FAT) !&#x3D; 1 (HD)  MS Data               1055842568 1055858951      16384check_FAT: Unusual number of reserved sectors 8 (FAT), should be 1.check_FAT: Unusual media descriptor (0xf8!&#x3D;0xf0)Warning: number of heads/cylinder mismatches 64 (FAT) !&#x3D; 1 (HD)Warning: number of sectors per track mismatches 32 (FAT) !&#x3D; 1 (HD)  MS Data               1064812040 1064828423      16384

Loner T · Answer

Please post the output of sudo dd if&#x3D;/dev/rdisk0s4 count&#x3D;1 2&gt;/dev/null | hexdump -C?

jaggboy · Answer

TestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orgDisk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)The harddisk (1000 GB / 931 GiB) seems too small! (&lt; 1931 GB / 1798 GiB)Check the harddisk size: HD jumpers settings, BIOS detection...The following partitions can&#x27;t be recovered:     Partition               Start        End    Size in sectors&gt;  MS Data               1026846776 2846023728 1819176953   Mac HFS               1278484238 1994314511  715830274   MS Data               1953523704 3772700656 1819176953   MS Data               1953523711 2924906494  971382784What is my next step from this screen?

jaggboy · Answer

Loner T thanks how do I do this?

Loner T · Answer

You will need to run a deeper search in Testdisk, since your disk is 1953525168 sectors and end value exceeds the size of the disk.

jaggboy · Answer

Thanks Loner T forgive my ignorance ar this point what steps do I take next to do that?

Loner T · Answer

Select the MS Data partition you are currently on and run a Deeper Search.

jaggboy · Answer

Ok I pressed continue and got this now what do I do?TestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orgDisk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)     Partition               Start        End    Size in sectors&gt;P EFI System                    40     409639     409600 [EFI] D Mac HFS                   409640  980871391  980461752 D MS Data                134346752 1953523704 1819176953 D Mac HFS                562653968 1278484241  715830274 D Mac HFS                980871392  982140927    1269536 D MS Data                982140928 1953523711  971382784 D Mac HFS                992972954 1001362078    8389125 D MS Data               1003433513 1013125369    9691857 [NO NAME] D MS Data               1055842568 1055858951      16384 D MS Data               1064812040 1064828423      16384 D MS Data               1069393832 1069410215      16384 D MS Data               1078378027 1078380906       2880 [NO NAME]Structure: Ok.  Use Up/Down Arrow keys to select partition.Use Left/Right Arrow keys to CHANGE partition characteristics:                P&#x3D;Primary  D&#x3D;DeletedKeys A: add partition, L: load backup, T: change type, P: list files,     Enter: to continueFAT32, blocksize&#x3D;512, 209 MB / 200 MiB

jaggboy · Answer

Ok I think I see deep scanning now...TestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orgDisk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)Analyse sector     1540096/1953525167: 00%  Mac HFS                  1221859  981683610  980461752  Mac HFS                  1222188  981683939  980461752  Mac HFS                  1222501  981684252  980461752  Mac HFS                  1222862  981684613  980461752  Mac HFS                  1223135  981684886  980461752  Mac HFS                  1223288  981685039  980461752  Mac HFS                  1223505  981685256  980461752  Mac HFS                  1223890  981685641  980461752  Mac HFS                  1224139  981685890  980461752  Mac HFS                  1224380  981686131  980461752  Mac HFS                  1224781  981686532  980461752  Mac HFS                  1225102  981686853  980461752  Mac HFS                  1225255  981687006  980461752  Mac HFS                  1225102  981686853  980461752

jaggboy · Answer

Ok after an entire day it finally finished scanning:No disk found.TestDisk will try to restart itself using the sudo command to getroot (superuser) privileges.sudo may ask your user password, it doesn&#x27;t ask for the root password.Usually there is no echo or &#x27;*&#x27; displayed when you type your password.Password:TestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orTestDisk 7.0-WIP, Data Recovery Utility, December 2014Christophe GRENIER &lt;grenier@cgsecurity.org&gt;http://www.cgsecurity.orgDisk /dev/rdisk0 - 1000 GB / 931 GiB - 1953525168 sectors (RO)The harddisk (1000 GB / 931 GiB) seems too small! (&lt; 8244231 TB / 7498084 TiB)Check the harddisk size: HD jumpers settings, BIOS detection...The following partitions can&#x27;t be recovered:     Partition               Start        End    Size in sectors&gt;  MS Data                589197655 2408374607 1819176953   MS Data                608449240 2427626192 1819176953   Mac HFS                980871388 1961333139  980461752   MS Data               1026846776 2846023728 1819176953   Mac HFS               1278484238 1994314511  715830274   Mac HFS               1364515067 4661906751 3297391685   Mac HFS               1364900009 4762958318 3398058310   Mac HFS               1365656154 2733684382 1368028229   MS Data               1533864209 16102014586812747 16102013052948538 [tem: %s   Mac HFS               1653462088 2056279113  402817026][ Continue ]NTFS, blocksize&#x3D;4096, 931 GB / 867 GiBWhat is the next step now Loner T? 🙂

Loner T · Answer

None of these entries look reasonable. Can you post the output of the dd command I had posted earlier? You may not have a lost NTFS partition, but just a corrupted bootblock/bootloader that Windows Startup Repair can fix easily.sudo dd if&#x3D;/dev/rdisk0s4 count&#x3D;1 2&gt;/dev/null | hexdump -CIt may also be helpful to know what events took place between Windows working and not working. Was it a Yosemite upgrade?

jaggboy · Answer

Thanks Loner T.  Excuse my ignorance again but what do I do to post that output?As far as what events happened I followed this instructional video on extending my partition: https://www.youtube.com/watch?v&#x3D;WeKeawqxUa0It worked great and I was using windows just fine. That is how I know all the data is still there and is worth trying to save. Its only my computer life since forever. 😟 But only when I booted back into the Mac side would it not let me back into Windows. It says missing OS system...Also I don&#x27;t know how to use Windows repair unless your actually in Windows?