Read More that your computer cannot write to. Here's how to fix a locked Mac drive and get it working again. If you find your drive here, try accessing it. Check the boxes to determine which drives show up on your desktop. This system utility lists all connected drives, with mounted or unmounted partitions listed below. If your drive appears in Disk Utility but you are unable to mount any partitions, you may still be able to recover data from that drive. Digital camera SD card corrupted itself? Don't despair — here's what you can do to recover your files on your own.
Some users have reported success in getting their previously missing drives to show up by rebuilding the macOS launch services database. You can rebuild the database by downloading and installing free maintenance app OnyX.
First Things First
Launch it and input your administrator password so that OnyX can make changes. The app may ask to verify the structure of your desk; click Continue and wait if so. OnyX will appear unresponsive while the process completes. Once OnyX comes back to life, click on the Maintenance tab followed by Rebuilding.
Make sure that LaunchServices is checked you can uncheck the rest then click Run Tasks at the bottom of the window. While this happens, Finder may become unresponsive.
Once the process is complete, restart your Mac. Try reconnecting your missing drive once it reboots. Some older drives require USB leads with separate power connectors.
You can try switching out the cable for another and seeing if that makes a difference. You can confirm whether or not the drive is faulty by trying to connect it to another computer, if you have one. One potential solution is searching online for your particular brand and model.
Manufacturers may have included Mac drivers as a separate download. If you have outstanding updates to apply, try applying them and trying again. In particular, some firmware updates relate specifically to peripherals and devices that connect via USB. Launch the Mac App Store app and head to the Updates tab. Read More before installing major updates or upgrading macOS to the next major version.
How to fix: External hard drive not showing up on Mac
Even disk first aid or whatever the hell they call it now on the external drives? 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. Toshiba external hard drive is not correctly powered. Try to connect it to an external powered USB hub.
You'll see the Toshiba external hard drive showing up on Mac desktop. Disk Utility is designed to verify and fix minor problems of disks. If the Toshiba external hard drive shows up in Disk Utility, it means it is recognized by the Mac. Thus, you can follow the tutorial as below. Method 1: Mount Toshiba external hard drive in Disk Utility manually by clicking on the Mount icon. Method 2: If Disk Utility's First Aid failed on external hard drive , you can reformat the not showing up Toshiba drive to re-use it. Please note that reformatting the Toshiba external hard drive will erase all the files stored on it.
In order to avoid unwanted data loss, it's necessary to recover data from the not showing up Toshiba drive in advance. Through only 4 steps, you can fix Toshiba external hard drive not showing up on Mac error without losing data. Step 1: Select the not showing up Toshiba drive and click "Next" button to scan all lost data. Preview the searching results, choose files you need, and click "Recover" to get them back. After the process finished, you will hopefully see the Toshiba external hard drive showing up on Mac correctly.
If not, go to the last option. If you have tried out all the solutions above with no luck, the Toshiba drive still not showing up on Mac, it could be damaged physically. You have to send it to specialists for suggestions. Besides fixing Toshiba external hard drive not showing up on Mac error, you can also try out this tutorial to fix the problems of My Passport for Mac not showing up , Seagate Backup Plus drive for Mac not showing up and much more. Store current Mac Data Recovery.
External Hard Drive Not Showing Up on Mac – What to do
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