Connect your external hard drive to your Mac and open it. A Finder window will open, showing its contents. Then, open a new Finder window and open your Pictures folder, which contains a file called iPhoto library. Then, drag the iPhoto library file to your external hard drive's folder. In such cases, the Mac OS X system volume is inaccessible because, as with any operating system, Mac OS X requires exclusive access to any volumes it has mounted. Please note that you will need to configure your virtualization software to have a particular virtual OS take control of a drive before Windows can use it.

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Mar 15, 2018  To use HFSExplorer, connect your Mac-formatted drive to your Windows PC and launch HFSExplorer. Click the “File” menu and select “Load File System From Device.” It will automatically locate the connected drive, and you can load it. You’ll see the contents of.

Summary: In this article, we will provide you 7 useful solutions to the issue of Toshiba external hard drives not showing up on Mac. Besides, we will also tell you how to recover lost data from the Toshiba external hard drive with free Mac data recovery software - iBoysoft Data Recovery for Mac.

'Toshiba external hard drive not showing up on Mac' is a frequently discussed question in Apple support community. Here's an example.

I have a Toshiba Canvio 1TB USB 3.0 hard drive. But when I plugged it into my Macbook Pro (mid 2012) it didn't show up. I have tried to swap around the USB connection cords but still not showing up. Reading something that the Toshiba hard drive won't show up on Mac laptops due to lack of power, I tried using an external powered USB hub still nothing. Can anyone tell me why my external hard drive is not showing up on the Mac, and how to fix it?

Why is your Toshiba external hard drive not show up on Mac?

In fact, there are various reasons that Mac doesn't recognize an external hard drive. Toshiba external hard drive not showing up could result from file catalog corruption, operating system errors, virus, physical damages, etc. Besides Toshiba portable hard drive, this error can also occur to WD external hard drives, Seagate external hard drives, etc.

Whatever the reason is, it will prevent you from accessing the files stored on it.

How to fix Toshiba external hard drive not showing up on Mac error?

Compared to Toshiba Canvio for Desktop drive, Toshiba portable hard drives offer more possibility. The Canvio range of Toshiba external hard drive includes Slim, Alu, Advance, Premium, Basics, and Ready. Although with unique features, the Toshiba portable hard drive still won't work sometimes.

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You can try these solutions when Toshiba disc drive is not showing up on Mac.

Solution 1: Do some basic checks

If your Toshiba external hard drive doesn't show up when connected to a Mac via USB port, follow the troubleshooting ideas below.

1. Toshiba external hard drive is not correctly powered.

Fix: Try to connect it to an externally powered USB hub, or try to insert the Type-C Multi-Port Adapter into another USB port on your Mac.

2. The USB cable is damaged.

Fix: Try a different USB cable but make sure it is compatible with your Toshiba external hard drive.

3. The USB port is damaged.

Fix: Try a different port on your Mac, a different computer, or even a PC to connect this Toshiba hard drive.

3. Toshiba 3.0 external hard drive is not showing up.

Fix: Please update the USB 3.0 driver of your Toshiba hard drive to the latest version on Mac.

Most of the time, you can see the Toshiba external hard drive showing up on Mac again after these checks. If not, let's move forward.

Solution 2: Show the Toshiba external hard drive on the desktop

Usually, a correctly connected external hard drive will show up on the desktop, in Finder and Disk Utility. If you can't see it, just check the settings of your Mac.

Step 1: Click Finder on menu bar.

Step 2: Go to Preferences > General tab.

Step 3: Make sure the 'External disks' option is ticked. If not, tick the box before it.

This operation will show the Toshiba external hard drive on the Mac desktop.

Solution 3: Show the Toshiba external hard drive in Finder

Step 1: Go to Finder > Preferences > Sidebar tab > Locations.

Step 2: Make sure the 'External disks' option is ticked.

Solution 4: Mount the Toshiba external hard drive in Disk Utility

Sometimes, the connected external hard drive shows up but it won't work on Mac. In this case, you can check if it is recognized and mounted in Disk Utility. If the Toshiba external hard drive is not mounted in Disk Utility, you can mount the drive manually.

Specifically, you can click on the Mount button on the top of the window, or hit the Mount icon beside the drive.

Solution 5: Fix the Toshiba external hard drive in Disk Utility

However, if the Toshiba external hard drive won't mount in Disk Utility, the file system of the drive may be corrupted. You need to fix it with First Aid.

Step 1: Go to Utilities > Disk Utility.

Step 2: Select the unmounted Toshiba external hard drive and click First Aid on the top of the window.

Step 3: Wait till the verification and reparation process ends.

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Solution 6: Reformat the Toshiba external hard drive

IfFirst Aid failed on external hard drive, the drive must be severely damaged, logically or physically. In this case, you can firstly try to fix the drive by reformatting, which is able to fix logical errors like file system corruption, partition table corruption, etc.

Note: Reformatting a drive will erase all the files stored on it. To prevent unwanted data loss, it's necessary to recover lost data from the not showing up Toshiba drive in advance.

iBoysoft Data Recovery for Mac is trustworthy and professional Mac data recovery software that is able torecover deleted photos, videos, documents, music files fromunreadable USB flash drives,unmountable SD cards, memory cards, external hard drives, and corrupted, damaged, formatted, inaccessible drives on macOS Catalina/Mojave/High Sierra/Sierra and Mac OS X 10.11/10.10/10.9/10.8/10.7. It supports HFS+, HFS, FAT32, exFAT andAPFS external drive data recovery.

Tutorial to recover data from the Toshiba external hard drive with iBoysoft Data Recovery for Mac.

Step 1: Download, install and launch iBoysoft Data Recovery for Mac.

Step 2: Select the not showing up Toshiba external hard drive and click 'Scan' button. This program will start scanning for lost data.

Step 3: Preview the searching results, choose files you need, and click 'Recover' to get them back.

After recovering data from the Toshiba external hard drive, you can reset the Toshiba external hard drive by reformatting it in Disk Utility now.

Step 1: Select the Toshiba external hard drive in Disk Utility sidebar.

Step 2: Click Erase on the top of the window.

Step 3: Follow the instructions to finish the reformatting process. Specifically, you need to provide a Name and a Format according to your preference.

After the process finishes, you will hopefully see the Toshiba external hard drive showing up on Mac correctly.

Solution 7: Send the drive to a disk reparation center

If you have tried out all the solutions above with no luck, the Toshiba external hard drive could be damaged physically. In case your Toshiba HDD is not recognized by your PC anymore and the blue LED is OFF and the red LED is ON, the HDD needs to be replaced. You have to send it to specialists or replace it with a new one.

How to make Toshiba external hard drives work on Mac?

Almost all Toshiba Canvio external hard drives are preformatted with NTFS file system, which means you can't use it directly on Mac. You can't write to NTFS in macOS by default. If you try to save files, the new Toshiba external hard drive is not working but read-only on Mac.

To use Toshiba external hard drive on Windows and Mac without formatting, you need to download an NTFS for Mac driver. You can also format this external hard drive with HFS+ for Mac usage only. But on Mac, you can't enjoy features provided by Toshiba software like regular automatic backups of data with Toshiba Storage Backup Software and password lock feature with Toshiba Storage Security Software.

Conclusion:

Toshiba external hard drive is widely used in our daily lives to store tons of different files. Once it can't be shown up on your Mac, there're solutions for you to recover lost data with free Mac data recovery software, like iBoysoft Data Recovery for Mac, as well as to fix the error through simple steps.

A bonus tip: To keep the security of your data, you should back them up regularly via Time Machine or on another external drive.

Prepare your drive

You can store your library on an external storage device, such as a USB or Thunderbolt drive formatted as APFS or Mac OS Extended (Journaled).¹ Find out how to check the format of your external storage device.

To prevent data loss, Apple doesn't recommend storing photo libraries on external storage devices like SD cards and USB flash drives, or drives that are shared on a network.

Move your Photos library to an external storage device

1. Quit Photos.
2. In the Finder, go to the external drive where you want to store your library.
3. In another Finder window, find your library. The default location is Users > [username] > Pictures, and it's named Photos Library.
4. Drag your library to its new location on the external drive. If you see an error, select your external drive's icon in the Finder, then choose File > Get Info. If the information under Sharing & Permissions isn't visible, click , then make sure the 'Ignore ownership on this volume' checkbox is selected. If it's not selected, click to unlock it, enter an administrator name and password, then select the checkbox.²
   
   
5. After the move is finished, double-click Photos Library in its new location to open it.
6. If you use iCloud Photo Library, designate this library as the System Photo Library.

Delete original library to save space

After you open your library from its new location and make sure that it works as expected, you can delete the library from its original location.

In a Finder window, go back to your Pictures folder (or whichever folder you copied your library from) and move Photos Library to the trash. Then choose Finder > Empty Trash to delete the library and reclaim disk space.

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Open another Photos library

If you have multiple libraries, here's how to open a different one:

1. Quit Photos.
2. Press and hold the Option key while you open Photos.
3. Select the library that you want to open, then click Choose Library.

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Photos uses this library until you open a different one.

Learn more

If you have a permissions issue with your library, you might be able to resolve the issue by using the Photos library repair tool.

1. You can't move your library to a disk that's used for Time Machine backups.

2. If the volume isn't formatted APFS or Mac OS Extended (Journaled), or has been used for Time Machine backups but hasn't been erased, this checkbox will either not be present, or won't be selectable after unlocking. Erase and reformat the drive for this option to be available.