Seagate external hard drive help

Discussion in 'MacBook Air' started by sunshinecourt9, Sep 22, 2015.

  1. sunshinecourt9 macrumors member


    Sep 18, 2012
    I have an issue. I have been using a Seagate external hard drive on my macbook air to backup time machine. I went to back it up today like I usually do and no matter what I do my mac is not reading my Seagate! Every other time, I plug it in and it shows up. What do I do? I need to free up space because I don't have room to even back up my iPhone at this point. I think I did an IOS update last week...did that do something?
  2. rigormortis macrumors 68000


    Jun 11, 2009
    is it spinning? hold it up to your ear. this makes sure the drive is alive

    is it beeping ? this means its not getting enough power

    are you using a hub? try plugging it directly to the mac

    is it clicking? this means the drive is damaged

    plug it into a different computer

    take it out of its case and attach it to a SATA port read the smart sensor
    or use something like this???

    if smart status is verified then the drive has not failed

    try disk utility or disk warrior to check the disk

    if its just a time machine backup and not important data, you can just reformat it

    go to seagates page and give it the serial # of the drive to see if its under warranty
  3. Boyd01 macrumors 68040


    Feb 21, 2012
    New Jersey Pine Barrens
    True, but do you really want to continue using a questionable hard drive for backups?
  4. sunshinecourt9 thread starter macrumors member


    Sep 18, 2012
    Yes, when I plug it in to the USB port, the light on the Seagate comes on and I hear internal noises like spinning.

    There are pictures on it that I have removed from my computer and placed on the external for storage reasons, so I don't want to risk losing anything.

    I will try the link you posted for more help.
  5. rigormortis, Sep 23, 2015
    Last edited: Sep 23, 2015

    rigormortis macrumors 68000


    Jun 11, 2009
    what i meant to put there was if all these things above pass and there is nothing important then just reformat it.

    as long as the smart status is "verified" and the drive is spinning and not beeping or clicking the drive IS NOT considered questionable

    if you feel you have a problem with the disk and you want to prove that it is not questionable, your best bet is to do a full pass erase, multiple times, 3 should do it, you can do 35 passes if you want. this proves that the disk is fine ( does not apply to solid state)
  6. rigormortis macrumors 68000


    Jun 11, 2009

    if its spinning, try disk warrior
  7. c8rlo macrumors 6502


    Sep 1, 2015
    i had the same problem when i bought an WD external HD, even after formatting it was still not recognized. yet if i use a dedicated laptop hard drive in an enclosure i have no problems whatsoever when it's connected to the notebook.

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