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    WD external disk error

    Scheduled Pinned Locked Moved IT Discussion
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    • AmbarishrhA
      Ambarishrh @Nara
      last edited by

      @Nara I just want to wipe it and use it again.

      1 Reply Last reply Reply Quote 0
      • AmbarishrhA
        Ambarishrh @BC
        last edited by

        @BC Its a small external hard drive, WD Elements without additional power, just the USB

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        • J
          jasonh
          last edited by jasonh

          If you're not worried about losing any data on the drive and just want to wipe the GPT table so you can start over from scratch, run these two commands:

          dd if=/dev/zero of=/dev/disk2 bs=512 count=2
          dd if=/dev/zero of=/dev/disk2 bs=512 count=2 seek=$(($(blockdev --getsz /dev/disk2) - 2))

          The first one wipes the GPT table from the beginning of the disk. The second one wipes the backup copy from the end of the disk. GPT keeps two copies, in case one gets corrupted, so you have to wipe both.

          AmbarishrhA 1 Reply Last reply Reply Quote 1
          • AmbarishrhA
            Ambarishrh @jasonh
            last edited by Ambarishrh

            @jasonh Thanks!

            I tried but didn't worked.

            diskutil list

            /dev/disk1

            0: *2.2 TB disk1

            dd if=/dev/zero of=/dev/disk1 bs=512 count=2
            dd: /dev/disk1: Permission denied
            Ambis-iMac:~ ambarishrh$ sudo dd if=/dev/zero of=/dev/disk1 bs=512 count=2
            Password:
            dd: /dev/disk1: Permission denied

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            • scottalanmillerS
              scottalanmiller
              last edited by

              Are you sure that you have sudo permissions?

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              • AmbarishrhA
                Ambarishrh
                last edited by

                Yes, I did run the command with sudo, and I am the admin for my MAC.

                1 Reply Last reply Reply Quote 0
                • AmbarishrhA
                  Ambarishrh
                  last edited by

                  sh-3.2# dd if=/dev/zero of=/dev/disk1 bs=512 count=2
                  dd: /dev/disk1: Permission denied

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                  • NaraN
                    Nara
                    last edited by

                    Do you have access to a Windows machine? You could use diskpart and clean the drive to wipe it out.

                    AmbarishrhA 2 Replies Last reply Reply Quote 1
                    • AmbarishrhA
                      Ambarishrh @Nara
                      last edited by

                      @Nara I do have one. Let me check in that.

                      1 Reply Last reply Reply Quote 0
                      • RoguePacketR
                        RoguePacket
                        last edited by

                        OS X side, Disk Utility is used for this: repartitioning, formatting, et al. Gets grumpy with NTFS, but not much a hassle when wiping.

                        KatieK 1 Reply Last reply Reply Quote 0
                        • KatieK
                          Katie @RoguePacket
                          last edited by

                          @RoguePacket said:

                          OS X side, Disk Utility is used for this: repartitioning, formatting, et al. Gets grumpy with NTFS, but not much a hassle when wiping.

                          I concur - if you're keeping it Mac side, NTFS is not the way to go.

                          1 Reply Last reply Reply Quote 0
                          • RoguePacketR
                            RoguePacket
                            last edited by

                            @nara @katie

                            Ah, that reminds me, OS X is read-only for NTFS. Should be fine to wipe with Disk Utility, but most other operations would fail (sudo or no).

                            Curious, have not tried this...could be worth a shot as a testβ€”

                            • http://www.cnet.com/news/how-to-manually-enable-ntfs-read-and-write-in-os-x/
                            1 Reply Last reply Reply Quote 0
                            • AmbarishrhA
                              Ambarishrh @Nara
                              last edited by

                              @Nara Tried on Windows, same issue- Access Denied! May be its time to get rid of that, but can't believe that the HDD is visible on disk management on both windows & MAC but can't access that! 😞

                              NaraN 1 Reply Last reply Reply Quote 0
                              • DashrenderD
                                Dashrender
                                last edited by

                                have you tried a utility like SpinRite yet?

                                AmbarishrhA 1 Reply Last reply Reply Quote 0
                                • AmbarishrhA
                                  Ambarishrh @Dashrender
                                  last edited by

                                  @Dashrender Thanks. Haven't tried it yet. Let me check that as well.

                                  DashrenderD 1 Reply Last reply Reply Quote 0
                                  • DashrenderD
                                    Dashrender @Ambarishrh
                                    last edited by

                                    @ambarishrh said:

                                    @Dashrender Thanks. Haven't tried it yet. Let me check that as well.

                                    Spinrite isn't free, but they do offer a money back guarantee.

                                    1 Reply Last reply Reply Quote 0
                                    • NaraN
                                      Nara @Ambarishrh
                                      last edited by

                                      @ambarishrh said:

                                      @Nara Tried on Windows, same issue- Access Denied! May be its time to get rid of that, but can't believe that the HDD is visible on disk management on both windows & MAC but can't access that! 😞

                                      Access denied? Were you running the command prompt with elevated rights?

                                      1 Reply Last reply Reply Quote 0
                                      • B
                                        BC
                                        last edited by

                                        Tried what exactly with windows?

                                        my computer > E/F drive access?

                                        yes that will get denied... should actually come up with a message about granting access unless its formatted with some other partition like reiser/etc

                                        under windows you should be right clicking my computer and choosing manage then seeing the disk loaded...
                                        Make sure you're looking at the right one... they load 2 disks... CD (WD Ware) + Open Storage
                                        in the disk manager you'll see if it can read the partition format - if its ntfs / other - no matter what you'll be able to wipe the storage side via any OS but can't wipe the non-storage CD Side... not without a little firmware flash / using WDWare tools to turn it off

                                        I'm wondering if he's seeing the virtual CDRom that these load... and not the actual storage...

                                        NaraN AmbarishrhA 2 Replies Last reply Reply Quote 0
                                        • NaraN
                                          Nara @BC
                                          last edited by

                                          @BC said:

                                          Tried what exactly with windows?

                                          Using diskpart to clean the drive

                                          1 Reply Last reply Reply Quote 0
                                          • AmbarishrhA
                                            Ambarishrh @BC
                                            last edited by

                                            @BC I tried the Disk Management, Selected the 2TB WD HDD, it was not initialised. Tried to initialise the disk and got access denied error. I hope you read my initial posts, that I tried the same thing using Disk Utility on a MAC and dd command to clean the hard drive.

                                            @nara Tried the diskpart as well but without success. I am actually checking Spinrite if that helps. Will let you know the results soon.

                                            1 Reply Last reply Reply Quote 0
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