By Bryce / Last Updated March 11, 2022

External hard drive not showing up in Windows 10/11

With large capacity, external hard drive, also called portable hard drive, is always used to store or back up data. In most cases, external hard drive or the second hard drive will present automatically after connected to your computer. However, it is possible that the external hard drive not showing up in Windows 10/11 File Explorer or “This PC”. Then, you won’t be able to open it to use the files stored on it.

Solutions for external hard drive not showing up in Windows 10/11

If your external hard drive  (portable hard drive) won't show in Windows 10 Explorer as well, the following steps will guide you to solve the issue and make the external drive appears. 

First of all, let’s open Disk Management to see the condition of this hard drive (Press “Windows”+ “R”, type “diskmgmt.msc” and hit “Enter”, you will access Disk Management interface). And you can take acorroding solutions if it is showing up in Windows 10 Disk Management or not appearing in Disk Management.

▐ External hard drive not showing up in Windows 10 Explorer but in Disk Management

When the hard drive doesn't appear in Windows 10 File Explorer but in Disk Management, you can try the following 3 methods.

✔ Solution 1. Assign a drive letter to the external hard drive

When the external has no drive letter, it will be invisible in File Explorer. At this time, you should assign a drive letter. Firstly, right click the partition that doesn’t have a drive letter and choose “Change Drive Letter and Path...” Then click on “Add”, choose a drive letter and click “OK” to give it a drive letter. After that, you can access the hard drive from File Explorer.

✔ Solution 2. Initialize external hard drive

When the external hard drive is not initialized and appears as an unallocated space or without showing disk capacity, you can initialize it as follows:

1. Right click the hard drive that needs to be initialized

2. Select “Initialize Disk” and set the disk partition style as MBR or GPT.

3. Right click the disk and choose “Create New Simple Volume”.

Notice: As initialization will cause data loss, you’d better backup all the important data on the external hard drive before initializing it.

Solution 3. Rebuild MBR without data loss

It is well-known that MBR or Master Boot Record is essential to a hard drive. When it is damaged by some accidents such as virus attacks or inappropriate operation, the hard drive might display as unknown and not initialized external hard drive in Disk Management. Under this case, what you should do is to rebuild MBR via reliable and software - AOMEI Partition Assistant Standard.

First of all, free download AOMEI Partition Assistant Standard. Install and fire up it. Then you can follow the steps to rebuild MBR on the external hard drive.

Download Freeware Win 11/10/8.1/8/7/XP
Secure Download

Step 1. Right click the uninitialized disk and choose “Rebuild MBR”.

Rebuild MBR

Step 2. Set the type of MBR based on your current operating system. Then, click “OK”.

Choose MBR Type

Step 3. Click on “Apply” to implement this operation.


Note: You can get more advanced functions, like recoverig lost partition on external hard drive, converting system disk from MBR to GPT without data loss, if you upgrade it to Professional version.

▐ External Hard drive not showing up in Windows 10/11 Disk Management

If the external hard drive is not recognized by Windows 10 or 11 and doesn’t display in Disk Management, it is likely that there is something wrong with USB port, Windows driver and so on. To solve external hard drive not showing up in Windows 10/11 Disk Management, you have to take specific steps based on different situations.

Solution 1. Check Windows driver via Device Manager

When Windows 10/11 Disk Management doesn’t list the external drive, you can check whether there is a driver problem on Windows via Device Manager.

1. Press “Windows”+ “R”, enter “devmgmt.msc” and hit “Enter”.

2. Click “Disk Drives”; if the external hard drive is with a yellow exclamation mark, it is problematic.

3. Right-click the problematic drive, select “Properties”, and read the message carefully.

4. To fix such error, under Driver table, click on “Update driver” to install updated drivers. Or you can click on “Uninstall” to uninstall the driver and restart your computer; after rebooting, the driver will be automatically reinstalled and reconfigured.

Solution 2. Examine USB port and enable USB Device in BIOS

If you can’t find out the external hard drive even in BIOS, it might be caused by disabling interface in BIOS. Thus, you can enter BIOS to enable the USB device. Then restart your computer to see whether the problem is solved. If you still can’t see the drive in BIOS, you can check the USB port is “OK”.

First of all, you need to unplug the external hard drive and plug it into another USB port to see if it works. If you have connected the drive via USB hub, connect it to computer itself. Then, if you can see the drive in Disk Management but not in This PC, you take measures narrative in previous part.

3. Diagnose the external hard drive

Having done all of these, if the problem external hard drive not showing up in Disk Management Windows 10 still exists, don’t hurry to abandon the external hard drive might be dead. You can employ professional hard drive diagnostic software to check if you have to replace this external hard drive.

What if the external hard drive shows but is unrecognized in Windows 10/11?

If the external hard drive's file system is corrupted or incompatible with Windows 10/11, it won't be accessible even it shows up in Windows 10/11 File Explorer. If you open it, you can receive an error, like "X drive is not accessable access is denied". In such a case, you can format external hard drive to certain file system compatible with Windows system.

The tool mentioned above, AOMEI Partition Assistant Standard will be a nice solution. It allows you to format external hard drive like Samsung and WD external hard drive etc. to FAT32 without the limitation of 32GB in partition size, exFAT or NTFS effortlessly. The detailed steps are as follows:

Step 1. Run AOMEI Partition Assistant Standard. Right click the external hard drive partition that you need to format and choose “Format Partition”.

Format Raw To NTFS

Step 2. Choose one file system compatible with Windows system and click “OK”.

Choose File System

Step 3. Review the operation and click “Apply” to implement it.

Apply Proceed

Warning: Formatting external hard drive partition will delete all data on it. If there is any important data, you’d better backup or transfer it to somewhere before formatting.