My external hard drive is not reading on my mac

Now, see if it is present there in the My Computer window. If not, follow the step 2. Step 2 Now, look for the external drive in the Disk Management Window. This will open the Disk Management Window. Now, look for the external disk in this window.

External cd drive not working, advice please | AppleVis

In this window, you can find your drive even if it is not recognized because of no partition. If you cannot find the drive in the Disk Management window then you can go for step four. Step 3 If it is not recognized by plugging in some other port or it is not visible in the Disk Management Window, then there might be some issue with the external drive. Check it in some other computer. Now, follow step 1 to step 3 in that computer in case the external drive is not recognized. If the problem exists with other computer also then something is wrong with the drive, otherwise follow step Step 4 If it is working in some other system but not in yours, Windows is having some problem with the drivers.

Now press enter. Expand Disk Drives and look for a device having yellow exclamation mark.

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This yellow exclamation mark indicates a problematic driver. Now, right click on that device and read the error message after selecting properties. This issue can resolve in following two ways:.

Fix 'the disk you inserted is not readable by this computer' Mac

Now, plug in the external drive again or follow the step 6 if the drive is still not recognized. Step 5 Problem in partitioning and formatting can also be a cause of this issue. Partitioning and file system issues can be fixed by using Windows Disk Management tools.

To create a new partition, right click inside the unallocated space and select New Simple Volume. You can create a new partition by following onscreen instructions. Reformatting of the drive can resolve this issue. For this, right click on the partition, select format and then select the file system. Here, it is important to know that all files in drive will be deleted. Therefore, copy your files in some other system before proceeding. Like Windows, Mac also detects an external drive automatically. If it doesn't, follow these steps:.

Step 1 First of all, look for the external hard drive in the finder window. For this, click on file and then click New Finder Window. This lead to external hdds not being recognised and once recognised disconnecting without prompt. In my situation, that was the problem! I believed that you must always have power on your devices before plugging them into the Mac. But no drive showed up! Sometimes it worked but I didn't know why.

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

Usually a Mac restart fixed it I lived with this I'm using a two-drive USB hard disk case. So I am just adding this answer for others that have the same situation. That may be all it takes to solve it for you like it did for me! That was how I discovered that my USB device was detected by the computer but advertised no storage units. Thank you for your interest in this question.

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General Troubleshooting

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"? Continued use of our website indicates your consent to our usage of cookies. Twitter Facebook Google Plus Linked in.

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It is recommended that you only copy data i. Applications will not function when they are copied to a different system. Also, please note there may be a file system compatibility issue. Please see the " File system compatibility between operating systems " section below. File system compatibility between operating systems.

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Computer Won't Boot

This is the best solution Seagate offers for transferring data between Windows and Mac computers. Using a FAT32 formatted drive within the Macintosh environment is only recommended for a short period of time to transfer data. Also keep in mind, that you will have a 4 GB file transfer limitation. Do not use NTFS formatted drives.

You will be able to copy data from, but not to, the external hard drive. For non-GoFlex drives, Windows does not support the Macintosh file system and it cannot be read.