Hi,

What are the boo files used in Windows 8.1 and what is the process of boot. Please share me the technet forum link

Regards,

Boopathi S

It depends on how the OS is deployed, as to the specific location... but they are always in a hidden system folder called Boot.

Is the OS deployed to MBR or GPT disk? The boot process differs based on that.

Hello boopathi subramaniam,

Please refer to the following article about Windows 8.1 boot process.
https://technet.microsoft.com/en-us/windows/dn168167.aspx?f=255&MSPPError=-2147217396

Best regards,
Fangzhou CHEN