Hi everyone, I have a problem, and I need some help. I have an Asus Pro NVME M.2 SSD as a Windows drive. Everything works fine with the default BIOS settings. I bought a second NVWE M.2 SSD, and if I install it, the BIOS won't see any boot devices in the list, even though in the M.2 list, it sees two drives. After I activate CSM support and reboot, the boot drive appears, but even though I select the correct boot drive, I get the message to reboot and select the correct boot drive. What should I do?
Sherly· Answered on Mar 28, 2023
Reasons for restarting and choosing the correct boot device error are various, for example, MBR corruption, incorrect boot sequence, boot file corruption, partition not set as active, hardware failure, etc. Next, I will share some of my experiences to help you. These ways work well on this issue:
Fix 1. Check the Boot Order in BIOS
This guide will teach you to set the correct boot drive:
Step 1. Restart the PC and press F2/F12/Del key to enter BIOS.
Step 2. Go to boot options, change the boot order, and set the operating system to boot from the new SSD. Remember to save your changes promptly.
Fix 2. Set the Correct Partition as Active
The partition holding the Windows boot files should be a very active partition. Otherwise, Windows will not start. Here, I recommend you use third-party software. Based on my tests, EaseUS Partition Master can set a partition as active with simple clicks.
Here is how:
Step 1. Run EaseUS Partition Manager software. On the disk map, right-click the target partition and select Advanced.
Step 2. Then, choose "Set as Active." Click Yes. Then select Execute 1 Task and click Apply.
You can also use this tool to rebuild MBR to fix this error. Follow Fix 3 to continue.
Fix 3. Rebuild MBR
It might be a little difficult, so I recommend you click the link below if you want to learn the details of how to rebuild MBR for your NVMe SSD:
How to Reformat SSD After Installing Windows 10 on M.2
Can you reformat SSD after installing Windows 10 on M.2? How? Don't worry; this article gives a full and detailed guide on how to reformat an SSD after you install your operating system on another SSD.
Mar 29, 2023
Can't Run Windows From NVMe SSD, How to Fix This Issue
Why can't run Windows from NVMe SSD? What should you do to remove this issue? This article helps you to remove this issue with simple clicks.
Mar 27, 2023
How to Remove SATA SSD Write Protection, Help
This article will offer a complete guide to how to remove SATA SSD write protection. And each workable solution followed the detailed steps.
Apr 12, 2023
How to Clone NVMe SSD to Another One With Only One Slot
How can you clone NVMe SSD to Another one with only one slot? Don't worry; this article focuses on this issue and teaches you how to finish this process efficiently.
Mar 28, 2023
Why My Cloned SSD Not Detected on Windows 10 and How Can I Fix the Boot Issue
Can your cloned SSD or cloned hard drive boot smoothly? This short page focuses on the cloned SSD not detected issue and helps explain the reasons behind the issue.
Mar 13, 2023
Can I Transfer OEM Windows License to New SSD without Deleting Data
Is it possible to transfer the OEM Windows license to a new SSD? This short article will provide a quick answer and help you to transfer OEM Windows 10 without deleting the first SSD data.
Mar 29, 2023