Mac mini will not recognize external hard drive

Why a flash drive is not showing up on Mac?
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  2. Fixing an external hard drive that’s not showing up on Mac
  3. External Hard Drive Not Showing Up on Mac? Here's How to Fix It
  4. 8 solutions to fix/repair the external hard drive not showing up in Disk Utility

Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Would you like to answer one of these unanswered questions instead? Home Questions Tags Users Unanswered. Sometimes Mac doesn't recognise my external hard drive Ask Question. Asked 3 years, 4 months ago. Active 1 year, 1 month ago. Viewed 59k times. What could be the problem?

Remember, we're not there to look over your shoulder. Also, can you expand on the external drive as well? What do you mean "restart several times"?

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Are you referring to the drive or to the MBP? Try this There's still lots of details still missing, Please reread the comments. There can be a number of reasons why your Macbook Pro won't recognize a drive. However, in Console, you can see that it is detected and an error is generated: When you attach your USB devices, have Console running and watch to see if the device is detected and whether an error is generated. First, see if they are listed. Your drive should be functioning again. Allan Allan This is really helpful, thank you.

When I tried to eject my disk, it gave the message Volume timed out while waiting to eject. Nova - something could be causing it to be "busy" - an open file or a process is preventing it from ejecting.

Try unmounting the drive instead of ejecting: sudo diskutil unmountDisk diskX It will still show up in diskutil, but you will be able to remove it without causing any issues. I've tried your suggestion but terminal hangs when it asks me for my password with sudo.

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Unmounting without sudo I get the same "Volume timed out" message. If you have time to take a look I provided more details in my own question, I'd really appreciate your advice! I had the same problem and I tried all the magic beyond this answer , I could not get My Passport WD to work light was ON but not blinking , I then simply "inserted" the USB3 very slowly in MBP and it works, its so weird; can not explain this phenomenon I also blew some air in both end of cable.

I had similar problems, tried unplugging and plugging back in at least 5 times. As always a reboot made the drive reappear, such an incredibly annoying issue. Side notes: This is commonly caused when the disk is removed without first ejecting. Bora Bora 1, 9 9 silver badges 13 13 bronze badges.

Fixing an external hard drive that’s not showing up on Mac

Something else to check: Did you use the external hard disk correctly? But today I realized that the proper method for my external drive is: Turn OFF the external drive if it's on. Plug in the USB cable into the Mac.

This definitely seems relevant to your situation. Looks like it could well be the same hard drive as yours Toshiba, GB and they also say that it's a power problem. One of the suggestions there is to get a Y connector as in a USB cable with two USB ports at the end, so it can give power from two ports as opposed to just one.

This should hopefully mean that you can still use the hard drive and not have to get a new one. That seems like a better idea Jun 30, 1 0. Solution I had the exact problem, luckily I have another Toshiba drive 2tb which is powered by a wall outlet and doesn't only rely on usb power, i swapped cables with it usb 3.

The one that comes stock with the toshiba drive doesn't and wont work on the new macbook pros because of the usb cable is not a high current cable if thats what its called? Hope this helps. Nov 11, 0. I had a similar problem, my mac was not recognizing my external HDD. I've made few threads to get help from the forums.


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In the end I got my problem solved by buying a new external HDD. So I got an answer when I took it in. On the new macbook pro apparently there is a high energy output state and a low one for the USB ports and there is no way to manually switch between the two.

External Hard Drive Not Showing Up on Mac? Here's How to Fix It

It turned out my cord was defective and wasn't sending the appropriate signal to the computer to switch into the higher powered state and, in the lower power state, it didn't give the drive enough energy to properly mount. A new cable fixed all my problems. Thanks for all the help!

PatricioC macrumors newbie. Jul 14, 1 0. Coheno macrumors newbie. Oct 14, 3 0.


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  • How to fix an external disk drive that won't show up on a Mac.

I bought one of those USB Y cables - so it has 2 USB ports on one end and then whatever connector you need to plug into your hard drive on the other. With both USB plugged in to the computer can pull enough power to run itself. Good luck!! Jun 24, 1 0. It isn't showing up anywhere.

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8 solutions to fix/repair the external hard drive not showing up in Disk Utility

I have a 2. There have been times when it fills up and I just erase everything on it and let it run again. Any clues as to what I should do?? Jul 19, 1 0. Dont buy belkin,other blue color brand, and cables having high thickness these solution works for me and my friend i hope these will work.

Steve O'Shaunessey macrumors newbie.