Step 5: Select the storage if the hard drive you inserted is displaying in the right of the panel, which means there is no issue with your Mac's port or connected hard drive, so you just need to move on the following method. Step 4: After displaying the system information window, double-click on the hardware option to expand the system information category.

Through this action, a screen will appear, system information window. Step 3: Click on the Overview button, and after that, select the system Report option.

Step 1: Click on the apple icon on the upper-left corner of your screen. You must have to check the Mac to recognize the external hard drive through the following steps: And you will get the same dialogue on-screen as I showed above. If your mac book/ pc port or external drive is damaged, your Mac will not identify the external hard drive. This kind of approach makes you able to check whether your mac port or hard drive is physically damaged. Solution 1: Check if your Mac can recognize the external hard drive Still, I have some experimented solutions that work for such type of problem. Furthermore, the risk of data corruption can be increase while transferring data from the external drive to Mac.įor preventing this kind of risk and problems, There is numerous website which are providing not-effective methods. It is incredibly annoying when you are transferring data between two devices. Whenever these kinds of problems occur, your external hard drive doesn't show on your Mac.

Test your external hard drive on a different Mac or pc sometimes, this problem occurs due to the hard drive damaged.

This problem might because of your mac or USB port( thunder-bolt), so try a different Mac to assurance.

If your external drive connected through a wall outlet, use a different wall outlet.

A USB port( Thunderbolt port) is damaged, it might be a hardware problem of your Mac, so try a different port.

Data cable is damaged or exposed( try different cable).

I evaluated some possible cusses that are going to mention below.

If you connected your external hard drive with your Mac, and it's not responding like discussed above, definitely there is a kind of particular problem behind the scene, that you didn't recognize yet. Why does my external hard drive keep disconnecting? Change the format of your external hard drive Recover or backup your drive data before format Check if your Mac can recognize the external hard drive Why does my external hard drive keep disconnecting?.

Mac disk check large files