Skip navigation

iMac would not detect any external powered  3.5 " hard drives

617 Views 5 Replies Latest reply: Feb 4, 2013 10:40 PM by BDAqua RSS
unimatrix7 Calculating status...
Currently Being Moderated
Jan 30, 2013 5:14 PM



I noticed that my iMac osx 10.6.8 is not detecting any of my 3.5" external hard drives. The finder would not detect it and i tried using disk utility to check if the mac does. To my dismay, it did not.


I have 2 , 2 T Buffallo 3.5" external hard drives, they worked fine and one day they were not recognised. Initially i thought my buffalo drives crashed, but thank goodness it worked fine on my media player box.


Next I a 1 T Seagate Free Agent desktop which is also a 3.5" (acts as my time machine) and worked fine. Today I wanted to perform a back up after a few weeks, Mac again did not recognise the hard drive. I tried plugging and unplugging the usb, each powering up and down the drive between 1 min intervals. Did this twice, still no recognition.


I thought my usb port to my mac is off, but i could plug my iphone 5 usb and the port is working. I had also plugged in a 2.5" external Buffalo mini station 1 T hard drive, mac recognised it and i was able to transfer huge files.


Am a lil lost, so apprciate some help if anyone knows what to do please.




More Like This

  • Retrieving data ...

Bookmarked By (1)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.