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i can´t fix this external disk

/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:     FDisk_partition_scheme                        *1.0 TB     disk3
   1:                       0xA2                         1.0 TB     disk3s1
   2:                       0xA2                         49.4 MB    disk3s2


gpt show: /dev/disk3: mediasize=1000170586112; sectorsize=512; blocks=1953458176
gpt show: /dev/disk3: MBR at sector 0
gpt show: /dev/disk3: MBR part: type=162, start=63, size=1953343287
gpt show: /dev/disk3: MBR part: type=162, start=1953343350, size=96390
gpt show: /dev/disk3: Bad CRC in GPT table at sector 2
gpt show: /dev/disk3: Sec GPT at sector 1953458175
       start        size  index  contents
           0           1         MBR
           1          62         
          63  1953343287      1  MBR part 162
  1953343350       96390      2  MBR part 162
  1953439740       18403         
  1953458143          32         Sec GPT table
  1953458175           1         Sec GPT header



sh-3.2# sudo fsck_hfs -q /dev/disk3
** /dev/rdisk3 (NO WRITE)
   Executing fsck_hfs (version hfs-366.30.3).
volumeType is 0
0000:  0000 0000 0000 0000 0000 0000 0000 0000       |................|
. . .
01b0:  0000 0000 0000 0000 1a93 bde5 0000 0001       |................|
01c0:  0100 a2fe bff5 3f00 0000 37a7 6d74 0000       |..........7.mt..|
01d0:  81f6 a2fe bffb 76a7 6d74 8678 0100 0000       |......v.mt.x....|
01e0:  0000 0000 0000 0000 0000 0000 0000 0000       |................|
01f0:  0000 0000 0000 0000 0000 0000 0000 55aa       |..............U.|
QUICKCHECK ONLY; NO HFS SIGNATURE FOUND

sh-3.2# sudo fdisk -r /dev/rdisk3
fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

any solution???

this?

sh-3.2# sudo fdisk -u /dev/rdisk3
fdisk: could not open MBR file /usr/standalone/i386/boot0: No such file or directory

    -----------------------------------------------------
    ------ ATTENTION - UPDATING MASTER BOOT RECORD ------
    -----------------------------------------------------

Do you wish to write new MBR? [n] n
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  • Which format should the partition actually have?
    – nohillside
    Dec 26, 2016 at 12:21
  • Bad cyclical redundancy check in the GUID partition table makes it sound like an erase and reformat might prove helpful. "GUID Partition Table (GPT) is a standard for the layout of the partition table on a physical storage device used in a desktop or server PC" en.wikipedia.org/wiki/GUID_Partition_Table If it's corrupt, your Mac has no idea of what to make of the disk. Dec 26, 2016 at 14:55
  • The external hard drive was badly disconnected from a television. The disc has not been mounted since. There were only movies, but I think it's a mistake that should be able to fix and recover the disk as it was. Dec 27, 2016 at 1:40
  • The disc had the format that usually brings WD, I think it was ex fat Dec 27, 2016 at 1:41
  • But I'm afraid to touch something and spoil it at all, in case you have an easier arrangement to leave the disk as it was Dec 27, 2016 at 1:42

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