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The BIOS cannot configure RAID On, AHCI, or NVMe mode as RAID On is the default setting and is not changeable on these platforms. SATA and NVMe operation is not switchable by design. BIOS storage operation Screenshot: A blue screen error with "INACCESSIBLE BOOT DEVICE" stop code may occur when starting the computer that is running the operating system in AHCI mode. Affected Platforms: Dell 16 DC16250Dell 16 DC16251
The BIOS on these products is working as designed.
The BIOS is working as designed. RAID On is the default and only option for storage operation on these products. If the computer is encountering a blue screen, follow the steps in the following article to recover from the issue: Using BIOSConnect to Boot to SupportAssist OS Recovery
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