How do I open CSM in BIOS?
How do I open CSM in BIOS?
How to Enable or Disable CSM Support
- Start your computer, and then hold the F2 and Delete hotkey before the computer is booted.
- Navigate to the Boot tab using the left or right arrow key.
- Scroll down to the CSM (Compatibility Support Module) category.
- Now, set the Launch CSM option to Enabled/Disabled.
How do I activate launch 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.

What is CSM setting in BIOS?
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 use UEFI or CSM?
UEFI is faster, more secure, and has superior functionality. If you do enable CSM to install an older operating system, your device will automatically boot using the same mode it was installed with.
How do I know if CSM is enabled?

Find and Select the CSM, click it, and then you can choose to enable it or disable it. If you choose to enable it, then you need to check the Secure Boot option to make sure it’s disabled.
How do I turn on Legacy boot?
You may need to check each option below before you can enable Legacy Boot….Disable Secure Boot:
- Press F2 to enter BIOS during boot.
- Go to the Secure Boot menu: Advanced > Boot > Secure Boot (in Visual BIOS) Boot > Secure Boot (in Aptio V BIOS)
- Disable Secure Boot.
- Press F10 to save the changes and restart.
Should I enable launch CSM?
To put it in a nutshell, CSM exists to provide compatibility with systems that support or do not support UEFI completely, as well as systems that must be installed in Legacy. Therefore, if you need to boot a traditional MBR device, you need to enable the CSM.
Can I change from CSM to UEFI?
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.
How do I change CSM to UEFI?
A computer able to boot UEFI. In the BIOS setup. (You should see options for UEFI boot.)…
- Open Command Prompt with administrator privileges.
- Issue the following command: mbr2gpt.exe /convert /allowfullOS.
- Shut down and boot into your BIOS.
- Change your settings to UEFI mode.