Windows 10 won’t boot with 2nd hard drive [Solved]

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
Passionate about all elements related to Windows and combined with his innate curiosity, Ivan has delved deep into understanding this operating system, with a specialization in drivers and driver troubleshooting. When he's not tackling... Read more
Affiliate Disclosure
  • Secondary storage is more than welcomed for your data. Even if isn’t frequently accessed, it’s still of great importance.
  • If Windows 10 can't boot with 2nd hard drive, the below-listed troubleshooting tips will help you out.
  • Even if our instructions were useful, don’t hesitate to take a look at our Hard Drive Errors section too.
  • Finally, bookmark this Laptop and Computer Hub for more guides that will walk you through full solutions to all your problems. 
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Sometimes installing a 2nd hard drive may interrupt the default boot process and prevent your PC from booting. In addition, you may be unable to access Windows as the PC would halt at startup.

However, the Windows Report team has compiled the right solutions for you in order to fix this problem.

What can I do if a new hard drive won’t boot on Windows 10?

  1. Set the boot disk at the top of the computer’s boot order in BIOS
  2. Check the PC-to-HDD’s connections
  3. Update HDD drivers
  4. Run Automatic Repair/Start Repair
  5. Replace your Hard Disk Drive (HDD)

1. Set the boot disk at the top of the computer’s boot order in BIOS

  1. Power up your computer.
  2. Press the F1 key or any specified key to enter the BIOS (other keys such as F1, F12 or Delete may be used depending on your HP system).
  3. Locate your computer’s boot order under BIOS Boot.
  4. Select the HDD/SSD i.e. the boot disk and move it upward using the arrow key.second hard drive stops boot
  5. Save the changes by following the screen prompts and exit the BIOS.

One of the reasons for this problem is because the HDD/ boot disk is not at the top of the boot order. The system retrieves boot information and OS details by following a boot order.

The boot order consists of the sequence of sources which the computer searches in order to retrieve valid information.

Meanwhile, BIOS enables you to specify a drive by its position in the hard-drive list as below (eg HDD-1, HDD-2, etc.) make sure that your original drive is on the SATA0 data cable, and the new one is on the SATA1. Hence, the system will try to read off the SATA0 drive first.

However, if the HDD/boot disk is not at the top of the boot order, the computer tries to boot from another source which results in the error message.

If you intend to set the boot disk i.e. HDD at the top of the boot order in BIOS (Basic Input/Output System), follow the above steps.

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2. Check the PC-to-HDD’s connections

second hard drive stops boot
  1. Power off your computer and remove the battery. Open up your computer’s casing afterward.
  2. Detach the HDD from your computer.
  3. Clean all the ports and wirings linking the HDD to the computer and also check the SATA and power cables.
  4. Replace the faulty cables you detect and fix loose connections.
  5. Now, reconnect the HDD to the computer. (Ensure that all the connections are fastened tightly.
  6. Hence, attach the battery and power up your computer.

Sometimes, the laptop may have wobble resulting in a loosened state of the PC-to-HDD connections; the wires connecting the HDD to the system and vice versa might have been unfastened which causes the second hard drive to stop the boot process.

In order to check the PC/HDD wire connections, you need to use a screwdriver. Follow the above steps to check the connections and fix the problem.

However, if you do not have the tools and required practical knowledge involved in using this method; it is advisable that you consult a computer technician or computer engineer to help you out.

3. Update HDD drivers

Sometimes the only way to fix this problem is simply to visit your laptop manufacturer’s website and download the latest drivers’ drivers for your laptop. After downloading the latest drivers, uninstall your current one by following these steps:

  1. Press Windows Key + X and select Device Manager from the list.
  2. When Device Manager opens, locate your Touchpad driver, right-click it and choose Uninstall.
  3. If available, select Delete the driver software for this device and click OK.
  4. After the driver is removed, restart your PC.
  5. When your PC restarts, install the latest driver and check if that fixes the problem.

Sometimes updating drivers manually could be very stressful and time-consuming. However, you can always opt to execute all processes through third-party software. These tools not only will show you the right driver version for your device but will prevent also PC damages.

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4. Run Automatic Repair/Start Repair

how to Start Repair
  1. Insert Windows bootable installation DVD and restart your PC.
  2. Press any key to boot from CD or DVD when prompted to continue.
  3. Select your language preferences, and click Next.
  4. Click Repair your computer in the bottom-left.
  5. In the Choose an option screen, Click Troubleshoot > Click Advanced option > Automatic Repair or Startup Repair. Then, wait for the Windows Automatic/Startup Repairs to be complete.
  6. Restart your PC and boot to Windows. Attach the second hard drive afterward.

You can also fix the boot error problem by performing automatic repair/start repair on your system by using the Windows bootable installation DVD.

5. Replace your Hard Disk Drive (HDD)

replace your HDD

Finally, you need to consider replacing your PC’s HDD because it may be faulty. You can remove your HDD, connect it to another PC to access the files and folders on the PC, and also confirm if it boots up from the HDD.

Meanwhile, if the new PC is unable to identify and access the HDD, then you definitely need to replace it with a new one.

However, if the PC can detect and access the HDD, then the probable cause for the error problem is due to the faulty SATA cable.

The SATA cable connects the HDD to its motherboard; we highly recommended that you replace it with a new one. You can carry out the replacement by a professional computer engineer.

In conclusion, feel free to comment us below if you have any question concerning the solutions we mentioned above.

No less important, keep in mind that the above solutions are recommended whenever experiencing these issues as well:

  • External hard drive prevents booting – Booting issues while an external hard drive is present are nothing out of the ordinary. You may reset your UEFI setting back to default or apply the above tips.
  • Computer won’t boot with the external hard drive plugged in – If that’s a problem you can’t get rid of, running Automatic Repair/Start Repair or reformatting external drive may help.
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