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Recovering my DATA from USB External HD

I have problem because my External USB Hard Disk, I can't repair my HD and I can't extract my data/files.

check the info of the Hard Disk

     diskutil info /dev/disk2s2

       Device Identifier:        disk2s2

       Device Node:              /dev/disk2s2

       Whole:                    No

       Part of Whole:            disk2

       Volume Name:              ADATAHD

       Mounted:                  Yes

       Mount Point:              /Volumes/ADATAHD

       Partition Type:           Apple_HFS

       File System Personality:  Journaled HFS+

       Type (Bundle):            hfs

       Name (User Visible):      Mac OS Extended (Journaled)

       Journal:                  Journal size 81920 KB at offset 0x3410001000

       Owners:                   Disabled

       OS Can Be Installed:      No

       Media Type:               Generic

       Protocol:                 USB

       SMART Status:             Not Supported

       Volume UUID:              3A0FE0A0-1B83-3142-BC3A-97690E712867

       Disk / Partition UUID:    8B32B8BE-35B8-41B8-B5D5-E219EEBBD14D

       Disk Size:                999.9 GB (999860912128 Bytes) (exactly 1952853344 512-Byte-Units)

       Device Block Size:        512 Bytes

       Volume Total Space:       999.9 GB (999860912128 Bytes) (exactly 1952853344 512-Byte-Units)

       Volume Used Space:        349.4 GB (349353291776 Bytes) (exactly 682330648 512-Byte-Units) (34.9%)

       Volume Available Space:   650.5 GB (650507620352 Bytes) (exactly 1270522696 512-Byte-Units) (65.1%)

       Allocation Block Size:    4096 Bytes

       Read-Only Media:          No

       Read-Only Volume:         No

       Device Location:          External

       Removable Media:          Fixed

verifyVolume first

diskutil verifyVolume /dev/disk2s2

    Started file system verification on disk2s2 ADATAHD

    Verifying file system

    Checking Journaled HFS Plus volume

    Checking extents overflow file

    Checking catalog file

    Checking multi-linked files

    Checking catalog hierarchy

    Checking extended attributes file

    The volume ADATAHD could not be verified completely

    File system check exit code is 8

    Error: -69845: File system verify or repair failed

    Underlying error: 8: Exec format error

repairVolume command

    diskutil repairVolume /dev/disk2s2

    Started file system repair on disk2s2

    Repairing file system

    File system check exit code is 8

    Updating boot support partitions for the volume as required

    Error: -69610: Error parsing fsck program XML format output

    Underlying error: 8: Exec format error

Using fsck_hfs command

    sudo fsck_hfs -fryd /dev/disk2s2

    Password:

    journal_replay(/dev/disk2s2) returned 16

    ** /dev/rdisk2s2

    Using cacheBlockSize=32K cacheTotalBlock=32768 cacheSize=1048576K.

       Executing fsck_hfs (version hfs-366.70.1).

    could not get volume block 2, err 16

    could not get alternate volume header at 1952853342, err 16

    volumeType is 0

DELETED CHARACTERS

    unknown volume type

    primary MDB is at block 0 0x00

    alternate MDB is at block 0 0x00

    primary VHB is at block 0 0x00

    alternate VHB is at block 0 0x00

    sector size = 512 0x200

    VolumeObject flags = 0x01

    total sectors for volume = 1952853344 0x74662d60

    total sectors for embedded volume = 0 0x00

    CheckForClean - unknown volume type

    CheckHFS returned 6, fsmodified = 0

I was trying this with gpt disk2

    sudo gpt -r show disk0

    Password:

          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  235298960      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      235708600    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      236978136          7        

      236978143         32         Sec GPT table

      236978175          1         Sec GPT header

    $ sudo gpt -r show disk2

    gpt show: unable to open device 'disk2': Resource busy

    $

using `repairDisk`

    $ diskutil repairDisk disk2

    Repairing the partition map might erase disk2s1, proceed? (y/N) y

    Started partition map repair on disk2

    Checking prerequisites

    Problems were encountered during repair of the partition map

    Error: -69808: Some information was unavailable during an internal lookup

    $

Please tell me about some method to Extract Data/Files and Repair my External USB Hard Disk

A couple of questions. Have you tried any third party utilities? I've used Drive Genius in the past. Techtool Pro also. Also have you tried the software that came with the drive?

for your advice, I tried Techtool Pro, but it can't fixed.

最后更新：2017-08-28 10:18:18

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