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external hdd mount

  1. L

    Ext HDDs randomly won't mount/show up in MacOS

    Hi, I'm still fairly new to MacOS and trying to learn my way around. I have several external hard disc drives and for some reason, they don't all mount/appear in MacOS. I'm not sure what to do about it or how to get them to appear. They are all formatted exFAT so they can easily be read across...
  2. Miguel Cunha

    External HDD does not mount at startup in Sierra

    Hello! I use an external HDD for film editing, with several partitions, connected to an iMac via USB 3. I upgraded macOS from 10.11.6 to 10.12.6. Since then, whenever I startup the iMac, the HDD does not mount on the desktop, neither is detected by Disk Utility. However, if I turn off the HDD...
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