How to make a clean install of Windows 10, Windows 11 for Dell Laptops and Desktops in Legacy Mode [Legacy Boot]

How to make a clean install of Windows 10, Windows 11 for Dell Laptops and Desktops in Legacy Mode [Legacy Boot]
Legacy Mode: It's an old BIOS Legacy Boot Process to install Windows 10 or Windows 11.
We only recommend UEFI boot. Only use Legacy Boot if there are any issues with UEFI.
I use Legacy Boot in VMware for testing. {alertInfo}
Clean Install of Windows 10, Windows 11 for Dell XPS, Inspiron, Alienware Laptop's and Desktops: [Legacy Mode]
  • Firstly, make a bootable USB flash drive for Windows 10 or Windows 11.
  • Restart your PC and press F12 until your system setup or BIOS appears.
  • Go to Secure Boot > Secure Boot Enable and Disable.
  • Apply
  • Go to Security > PTT Security and uncheck PTT [Turn off PTT]. Apply
  • Go to General>Advanced Boot Options>and Checkmark Enable Legacy Options ROMs. Apply
  • Go to General > Boot Sequence > Boot list option and select Legacy. Apply
  • After finishing the installation of Windows 10, again Uncheck the Enable UEFI Network Stack Option and Apply in BIOS > System Configuration > Integrated NIC.
  • After exiting from boot setup, press F12 until Windows 10 setup boots up.
  • Install Windows 10, Windows 11, now. Finish
  • After completing the installation of Windows 10, Windows 11, go to BIOS Setup and select Restore Settings to BIOS Settings or Factory Settings to be in UEFI Mode [Because every PC should be in UEFI Mode for security reasons].
  • Try the Legacy Boot method only if the UEFI Boot method feels difficult to you.
NOTE: Try the Legacy Boot method only if the UEFI Boot method feels difficult to you.

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