Mac wont read external hard drive


  1. How to access an external drive that’s not recognized on a Mac
  2. Computer Won't Boot
  3. External Hard Drive Not Showing Up on Mac? Here's How to Fix It

Read More for details relevant to your machine. It's called Apple Service Diagnostic, and we'll show you how to get it and use it for best results. Read More. If you have a problem with a particular USB port, you might want to invest in a hub to make the most of your remaining connectivity.

It might also be time to start thinking about upgrading to another machine, since this could be indicative of bigger problems. Not everyone safely ejects their drives, especially small USB flash drives used primarily for data transfer. Larger external hard drives that store a lot of precious data are more worthy of your patience, however. You can eject a drive in several ways:.

Here are all your options for adding more storage space to your MacBook.

How to access an external drive that’s not recognized on a Mac

Explore more about: Your email address will not be published. For the majority of the time my USB will not show up in Finder. I am using a 27 inch 5K Mac. Yes, after rebooting it will be there, but why should I have to conduct a complete reboot and wait for ages just to see my USB. As I also need to use a particular Windows piece of software, I am also running Parallels and Windows 10 on the same Mac. Guess what?

External Hard Drive not showing up in Mac Disk Utility

I am sick of reading shallow advice about what to do to make the USB appear on the Mac when this is entirely a Mac problem which should be fixed by them before releasing almost daily software updates that do absolutely nothing. Love the advice to always amke sure to use Time Machine to back up the Mac.

HD is only blinking after connected to the laptop, Mac can't detect it.

Before We Begin: Read-Only Volumes and NTFS

Tried change cables, adapters, run Disk Utility, and connected to other laptops Any suggestions on what I can try next? Click the "First Aid" tab and select "Repair Disk," if available. You may need to restart your computer and follow the prompts to complete the repair.

Click the "Finder" icon in the Dock and look for your drive in the sidebar. Restart "Disk Utility" if you had to restart your computer to perform a repair and you still don't see your drive.

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  • Mac not showing up your external drive? Here's what to do!

Select your hard drive from the list and click the "Erase" tab. Click the "Format" drop-down menu and select the format you want to use. Click "Erase" to format your hard drive.

Computer Won't Boot

If you need to back up any information on the drive, first connect your drive to a computer that does recognize the drive and transfer the data to a new storage device. Press the power button on your computer and hold down "Command-S". Hold the keys down until you see white text appear on the screen.

Type "reboot" at the prompt after Fsck completes checking and attempting to repair your disk. Your Mac should now boot your hard disk. As a professional writer, she has written for Education. Martin contributed English translations for a collection of Japanese poems by Misuzu Kaneko. Corrupt data can be one reason your Mac won't recognize an external drive, but there are other reasons too.

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

Why an external disk drive is not showing up? Try connecting the same device with a different cable. It could be a hardware issue with the Mac. Sometimes, if a disk won't boot, the cause is macOS issue. Hopefully, some data damage that can be fixed by restarting. Or press and hold the power button and, when a dialog box appears, click the Restart or press R. Not every drive is optimized for Macs. It could be that you are trying to connect something only fit to interact with Windows devices.

See if the external drive shows up here. For more information, go to the same menu option, then select System Report. Even if that is the case, the drive will still appear in the left-hand column of the Finder menu under Devices. To do this, shut down or restart your Mac, switch it back on and immediately press these four keys together for at least 20 seconds: Option, Command, P, and R.