Csm or legacy options unavailable in bios.

please help me my bios systeam have no csm or legacy options for that i cant install windows 10 by bootable usb drive.

Device:Asus

Model:x509fb

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Legacy mode is a feature of UEFI, not BIOS.

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Hi Foysal,
I am Sumit, an Independent Advisor and a 3 year Windows Insider MVP here to help.

https://www.asus.com/bd/support/FAQ/1039116

Why isn’t [Launch CSM] function in the BIOS setup menu?

The Windows Operating System which supports Intel CoffeeLake and later processors is limited to Windows 10.

So [Launch CSM] feature(option) is no longer in the BIOS Setup menu from Intel CoffeeLake processors.

If the media cannot boot, disable quick boot and try again. If it still does not, try making a new one. Make sure the disk layout is set according to what it is right now(modern devices are based on GPT) and partition scheme is set to UEFI.


Disclaimer:
This is a non-Microsoft website which would provide accurate and safe information. Watch out for ads on the site which are frequently classified as a PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they do more harm than good sometimes.
Sumit
Available 6 PM - 8 AM PST

It is always good to include your PC Specs, make and model in the question

Never Call the Phone numbers received in Emails from the Microsoft Community

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you can install easily, by disabling secure boot in bios.

make sure your USB pen drive must be formatted as NTFS and partition type as GPT for UEFI (non-csm).

Use  Rufus 3.9 software to make bootable, i am also using ASUS vivobook R542UQ

I am a regular CONTRIBUTOR on docs.micrsosoft.com.
Windows11_Pro_IP_21H2_64bit_22458.1000_on_Asus Vivobook_Laptop R542UQ-DM153_Intel_i5-7200u_Nvidia_940mx_2GBvram-16GBram-2TBHDD_2TBHDD_1TB_M.2SSD

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hello after all when i chose usb pendrive for boot then showing this.. Why that type problem i facing now can anyone explain me??

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Your USB drive is either made incorrectly or is bad.
Sumit
Available 6 PM - 8 AM PST

It is always good to include your PC Specs, make and model in the question

Never Call the Phone numbers received in Emails from the Microsoft Community

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Please tell me how i will make my usb drive uefi bootable and my partition stable gpt mood.

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Use Rufus for the same - option 2 explains better:

https://www.tenforums.com/tutorials/2376-create...

Content on the above blog is written by a Microsoft MVP so it is safe. However, do watch out for the ads.
Sumit
Available 6 PM - 8 AM PST

It is always good to include your PC Specs, make and model in the question

Never Call the Phone numbers received in Emails from the Microsoft Community

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Last updated September 17, 2021 Views 13,933 Applies to: