Unable to Format HDD

Discussion in 'MacBook Pro' started by 19nffc97, May 6, 2016.

  1. 19nffc97 macrumors newbie

    Joined:
    Jun 26, 2012
    Location:
    Nottingham, England
    #1
    Hi, I have just bought myself a SSD for my Macbook Pro mid 2012 running El Capitan and decided to buy a caddy for my old SSHD to use as an external drive. I plug the external drive in and in disk utility go to the drive to try and format it but I just get the message 'Erase Process Failed'. The SSHD is 500gb with 150 gb as a windows partition, is it possible to format the drive?
     
  2. boast macrumors 65816

    boast

    Joined:
    Nov 12, 2007
    Location:
    Phoenix
    #2
    Can you try with the command line?

    Get the disk number of the connected drive:
    Code:
    diskutil list
    Reformat the drive:
    Code:
    diskutil eraseDisk JHFS+ MyDisk disk2

    Maybe that can give more information for the failure.
     
  3. 19nffc97 thread starter macrumors newbie

    Joined:
    Jun 26, 2012
    Location:
    Nottingham, England
    #3
    Hi Boast,

    Apologies I was a bit quick to post. The drive was 500gb with 150gb partitioned as windows. I was trying to format the whole drive but found if I just selected the OS X partition and erased it would let me and then I could select the whole disk and erase it.

    Thanks for the reply.

    Rich
     

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