Windows 10 does not recognize my second hard drive

Thank you for your being part of the Windows 10 family.

Sorry to know that you are not able to use 2nd Hard drive on Windows 10.

Refer to the below methods and check if it helps.

Method 1: I suggest you to run the Hardware and Devices troubleshooter and check if it helps.

1. Press Windows Key, then click on Search bar.

2. Type “Troubleshooting” without the quotes and click on Troubleshooting.

3. Then click on View All on the left panel of the screen.

4. Click on Hardware and Devices.

5. Click on Nextand follow the instructions.

If the issues still persist, refer to the below methods.

Method 2: I would suggest you to try to check for the status of the drive in the device manager.
1. Press Windows Key + R Key.
2. Then type “devmgmt.msc” without the quotes and hit on Enter Key.
3. Expand Disk Drive. If you are able to find the driver for the external drive.
6. Then again right click on the driver and click on Properties.

7. Check the device status of the disk.

Reply with the information, so that we can resolve the issue.

Hope it helps. Get back to us for further assistance on Windows related issues. We will be glad to help.

I had this problem on my laptop but not on my desktop. Windows 8.1 recognised the second drive on the laptop but 10 didn't.

Brief solution - the "best" drivers for the AHCI controller in my laptop were the Microsoft ones & update driver did not suggest a better. I manually installed the vendor's drivers (AMD in my case) and after a reboot the drive was recognised & functions fine. Hope this helps anyone else.

The MS drivers for the desktop obviously worked fine - the desktop hardware is new, though, whereas the laptop is five years old.

This minor inconvenience apart, though, I'm enjoying Windows 10 so far.