Question
We have system SYS-621H-TN12R, we installed windows server 2022 into the VROC RAID 1 on the 2 onboard NVMe M.2 drives, most of the time when the server is restarted, it fails to read the Windows boot manager and gives an error message. “ An unexpected error has occurred “ “ Status : 0xc000009a “. Please advise? 
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Answer
This error could be a Windows bootloader issue, our new Bios version 2.7 should help on this issue , so please may try updating the Bios for this system and see if that helps.

Bios file can be found under Resources& Downloads at:
https://www.supermicro.com/en/products/system/hyper/2u/sys-621h-tn12r

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FAQ ID:
44645
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Date Posted:
01/30/26
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