Cannot save my BIOS setting

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   I create RAID mode with 2 HDD on my AB350M pro4.
And I can make sure already change to RAID mode in BIOS save change and exit.
But after shut down over 24 hours, BIOS change to AHCI mode and then not able to enter to win10.
I need to always Boot to RAID Windows.
How can I do?

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wammaster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11 Nov 2017 Status: Offline Points: 16	Post Options Post Reply Quote wammaster Report Post Thanks(0) Quote Reply Topic: Cannot save my BIOS setting Posted: 18 Mar 2019 at 11:22am
	I create RAID mode with 2 HDD on my AB350M pro4. And I can make sure already change to RAID mode in BIOS save change and exit. But after shut down over 24 hours, BIOS change to AHCI mode and then not able to enter to win10. I need to always Boot to RAID Windows. How can I do?

ASRock_TSD Members Profile Send Private Message Find Members Posts Add to Buddy List ASRock_Official Joined: 20 Mar 2015 Status: Offline Points: 8532	Post Options Post Reply Quote ASRock_TSD Report Post Thanks(0) Quote Reply Posted: 18 Mar 2019 at 2:03pm
	Dear wammaster, Greetings, this is ASRock TSD. Be sure you have followed the RAID installation guide page 5~10 to configure the RAID volume as a boot disk successfully. http://asrock.pc.cdn.bitgravity.com/Manual/RAID/AB350M%20Pro4/English.pdf If the BIOS setting will go to default value after system shutting down, the problem may relate to CMOS battery. Please replace a new one and then verify again. *To verify this, you can also adjust other BIOS options and observe if it will back to default value after system back from S5 or G3 state. Thanks! All the best, ASRock TSD