Seagate external hard drive will not mount

I can't get a TB Seagate Backup Plus 2 player to mount on my Macbook Pro 2011. When I plug it into the USB port, disk utility detects it. I ran check disk and it said the necessary repair disk. Then I ran the repair disk and it said it was successful. However, the player still don't let it go. The disc appears on the other Mac, but not my Macbook Pro. It is not the problem of the USB port either because I was able to mount other external hard drives in order to use it. The reader has already worked on my Mac until I updated my OS from Snow Leopard in Yosemite.

Something could be wrong with my Mac that prevents the installation disc, or is it more likely to be a problem with the drive?

I guess it is related to software driver for Seagate to support the NTFS on mac.

OS X support NTFS natively, but read-only.

The installation of the supplied driver allows read-write access, but it is obsolete seamingly.

I just got the last of Seagate site, but it is still pretty new. The Info said taking in charge until Mavericks only.

If this is the case, you can take a from below.

  1. Uninstall the current driver and expect to release a new Seagate. In the meantime, you can have read access to the disk.
  2. Uninstall the current driver and get the latest version of the driver by the developer instead of Seagate. The last time the developer (Paragon) even on El Capitan and without limitation to Seagate drive. (Paragon is not free but has the trial period - http://www.paragon-software.com/home/ntfs-mac/ )
  3. Uninstall the current driver, then take the alternative. The son will be your help for this. - Need to write to the drive (ntfs) outside Yosemite

Tags: Notebooks

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