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  1. #21
    New ROGer Array
    Join Date
    Feb 2022
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    10
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    3

    What is CSM and do I need it enabled?

    So, if CSM is disabled for compatibility reasons, why does my Windows 10 boot without a hitch from a non-EFI m.2 drive? And what ASUS suggests for people who only have one UEFI installation of Windows 10. CSM can be turned on or off. In any scenario, UEFI is enabled. First... Because I'm just concerned with CSM, I'm not interested in Secure Boot. With so many activities, a SATA III SSD and motherboard startup time of 30-35 rear 38 seconds isn't bad. I can't answer for your board, but I had to keep the CSM activated on a similar build 7700K and M9F to allow it to boot from the USB. I don't recall experiencing any problems after turning off the feature. When Windows won't start due to an issue like this, I went back a step and let Windows boot, then rebooted to safe mode, then turned CSM off, saved, and exited. The computer will thereafter start in safe mode. restart...done
    Last edited by chrisjordan7651; 03-21-2022 at 05:23 AM.

  2. #22
    New ROGer Array Jimbo93 PC Specs
    Jimbo93 PC Specs
    Laptop (Model)ABS Master Gaming PC
    MotherboardASUS Prime B560M-A AC
    ProcessorINTEL i5 10400F
    Memory (part number)G.SKILL F4-3200C16D-16GVKB x 2
    Graphics Card #1ASUS DUAL-RTX3060TI-O8G-V2
    Sound CardRealTek HD
    MonitorSAMSUNG 40" LCD
    Storage #1INTEL 660p NVMe SSD PEKNW512GB
    CPU CoolerTHERMALTAKE UX100 ARGB
    CaseTUF GAMING GT301
    Power SupplyASUS TUF GAMING BRONZE 650W
    Keyboard TUF GAMING K1
    Mouse TUF GAMING M3
    Headset/Speakers Cambridge Works PC
    OS Win 11 Pro 21H2 22000.652
    Accessory #1 Windows Feature Experience Pack 1000.22000.652.0

    Join Date
    Oct 2021
    Reputation
    82
    Posts
    543

    Quote Originally Posted by otec View Post
    So, if its there for compatibility reasons, how come my Windows 10 boots from a non EFI m.2 drive without any problem with CSM is disabled?
    There must be a EFI boot partition somewhere you didnt know was there. Look in the bios at the boot options and youll see it.

  3. #23
    New ROGer Array
    Join Date
    Feb 2022
    Reputation
    10
    Posts
    3

    What is CSM and do I need it enabled?

    Ok, Let me check

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