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  1. What exactly is "UEFI with CSM" boot mode? - Super User

    Jan 11, 2018 · Under this question, I was told that "UEFI with CSM" is essentially BIOS mode. It made me quite confused because what I've learnt over the years is far from that. As per my …

  2. Where is the CSM (Compatibility Support Module) option in ASUS …

    May 18, 2025 · Here's how to enable CSM in this version of ASUS UEFI BIOS Utility even when it doesn't show up as an option under Boot: Activate [?]Search(F9) in the top right of the screen …

  3. I am changing from CSM BIOS mode to UEFI BIOS mode. Is it safe?

    Dec 13, 2023 · I have been told by a professional that choosing uefi mode in BIOS from CSM mode in BIOS is safe. Because in device manager it says that my system is in UEFI mode, I …

  4. How to switch MSI BIOS from UEFI mode to LEGACY+UEFI mode?

    Nov 2, 2024 · BIOS CSM/UEFI Mode was = UEFI BIOS CSM/UEFI Mode now = CSM thus change from UEFI to CSM SECURITY (Right side of screen, Right bottom corner) \ Secure …

  5. boot - What is CSM option - Super User

    Dec 26, 2014 · What is the CSM option in BIOS? If I can't boot into Windows any more, is it because CSM is disabled? Would an ASUS K55 come with this option diabled?

  6. bios - CSM setting won't stay? - Super User

    I am on an ASUS laptop currently and I was getting it to boot from the legacy Windows 10. I reset the BIOS and set launch csm to enabled. I saved settings and found out it was set back to …

  7. Detect CSM mode in Windows through PowerShell - Super User

    Mar 28, 2025 · Is there a way, ideally using PowerShell (but this can encapsulate things like WMI checks), to tell whether the Windows OS was booted specifically from UEFI-based firmware …

  8. Asus UEFI/BIOS options - How to boot from DVD? - Super User

    PC model? Check the BIOS for an option to display/hide optical drives from the boot menu. Also look into options related to Legacy (BIOS) Mode, enabling the UEFI Compatibility Support …

  9. Cannot use keyboard or mouse after disabling CSM and enabling …

    Jan 6, 2021 · I cannot use my keyboard or mouse ever since I enabled secure boot and disabled csm on my desktop. I can’t even use these when I get into the BIOS (by pressing Del at …

  10. Should I install an OS using UEFI or BIOS (legacy/CSM) boot mode?

    Aug 15, 2016 · I'm installing a new operating system on my computer. Should I install it for booting in UEFI or legacy (BIOS/CSM) mode? What are the advantages or disadvantages to …