Issues with Mac Time Machine and Seagate Backup Plus Desktop Drive V1 3TB

Discussion in 'Mac Accessories' started by sultanoflondon, Jan 9, 2016.

  1. sultanoflondon macrumors 6502

    Dec 3, 2013
    Hi all,

    I am getting an error message (screenshot attached) when my Mac (automatically) tries to make Time Machine back ups to my Time Machine back up drive ("Seagate 3TB"). I am trying to erase the disk, after completing other troubleshooting steps which have been ineffective. However, when I try to erase the disk using Disk Utility, I get another error message (another screenshot attached).

    Can anyone help? The HDD is almost three years old now.


    First screenshot:
    Screen Shot 2016-01-07 at 16.32.18.png

    Second screenshot:
    Screen Shot 2016-01-09 at 18.37.30.png
  2. CoastalOR macrumors 68020


    Jan 19, 2015
    Oregon, USA
    I've seen the same problem occasionally with my external USB drives not able to unmount with Disk Utility in El Capitan. A restart of my Mac fixes the problem.
  3. ColdCase macrumors 68030

    Feb 10, 2008
    Otherwise it could be the disk starting to fail.
  4. matreya macrumors 65816


    Nov 14, 2009
    Instead of choosing to erase the partition "Seagate 3TB", try erasing the actual drive (the icon above the one selected in the screengrab) "Seagate Backup+..."

    Other than that, Seagate had a terrible batch of 3TB drives a few years ago, so maybe it's dying.

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