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Mac Mini doesn't recognise external hard drive all of a sudden

Hi

Need help!!!!! I have been connecting 3 different external hard drive to my mac mini. They have been working fine up until yesterday. My mac mini stop recognising them. I can't see them in finder. I know very little of all these. Can someone help?

Mac mini, iOS 9.3.1

Posted on May 3, 2016 6:30 AM

Reply
5 replies

May 3, 2016 6:58 AM in response to kayerraga

Reset the SMC:

Reset the System Management Controller (SMC) on your Mac - Apple Support

http://support.apple.com/kb/HT3964


- Try another cable

- Is the drive self-powered, that only powered by the USB bus? If so it could be that the USB port does not provided enough power. You can try a powered USB hub.

- Does it show in Disk Utility?

- Does it show in System Profiler under USB? You should see the chipset in the enclosure as well as the HD itself

OS X: About System Information and System Profiler - Apple Support

Mac Mini doesn't recognise external hard drive all of a sudden

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