What is CSM boot mode?
CSM is something that allows booting in legacy BIOS mode on UEFI systems. The Compatibility Support Module (CSM) is a component of the UEFI firmware that provides legacy BIOS compatibility by emulating a BIOS environment, allowing legacy operating systems and some option ROMs that do not support UEFI to still be used.
Should I disable CSM in BIOS?
Should I disable CSM in BIOS? On Intel motherboards, CSM (Compatibility Support Module) should only be disabled if your GPU is UEFI compatible. If not, you’ll run into the issue you’re reporting. And yes, on Intel boards, in order to enable Secure Boot, CSM must be disabled in order for Secure boot to be enabled.
Should I enable CSM in BIOS?
You don’t need to enable it. It’s only needed if you must install an older OS that doesn’t support UEFI. If you’ve mucked around in the BIOS settings, reset it to defaults and see if your PC boots again. Most BIOSes have a keyboard shortcut to reset to factory default settings.
Is it safe to disable CSM?
Hence, CSM helps emulate a BIOS environment that is compatible with your current OS. Disabling CSM will allow you to enable UEFI on your system which is needed to install the most modern compatible Operating Systems.
How do I turn on CSM?
This option is usually in either the Security tab, the Boot tab, or the Authentication tab. Look for a setting called “Boot Mode”, “UEFI Boot”, “Launch CSM” or whatever else it may be called, change the boot mode from UEFI to Legacy/CSM: disable the UEFI Boot option and enable CSM Boot support.
Should I disable CSM for Windows 11?
Even if your computer is updated with the latest UEFI firmware, certain settings may make the system incompatible with Windows 11. It results in losing certain UEFI features essential for the Windows 11 update. Hence, you’ll need to disable CSM to run the latest compatible operating system.
Can I change from CSM to UEFI?
1 Answer. If you just change from CSM/BIOS to UEFI then your computer will simply not boot. Windows does not support booting from GPT disks when in BIOS mode, meaning you must have an MBR disk, and it does not support booting from MBR disks when in UEFI mode, meaning you must have a GPT disk.
What is the difference between UEFI and CSM boot?
CSM uses an MBR (Master Boot Record) in a specific format of 512 Bytes to boot the operating system. UEFI uses files within a large partition (typically 100 MB) to boot the operating system. Typically they still require the MBR to be present.
How do I enable CSM in BIOS HP?
Press the power button to turn on the computer, and then immediately press the Esc key repeatedly until the Startup Menu opens. Press F10 to open BIOS Setup. Use the right arrow key to select System Configuration, use the down arrow key to select Boot Options, and then press Enter. Check for Legacy Support in the list.