UEFI (Unified Extensible Firmware Interface) is
a newer standard that replaces the legacy BIOS. UEFI offers more features and
benefits, such as faster boot times, better security, larger disk support, and
graphical user interface. Legacy BIOS is the old mode that uses a 16-bit code
and a limited number of option
You can also look for a setting that enables or
disables CSM (Compatibility Support Module), which is a feature that allows
legacy BIOS to boot UEFI devices. If you enable CSM, you will switch to legacy
BIOS mode. If you disable CSM, you will switch to UEFI mode.
MBR2GPT.EXE converts a disk from the
Master Boot Record (MBR) to the GUID Partition Table (GPT) partition style
without modifying or deleting data on the disk. The tool runs from a Windows
Preinstallation Environment (Windows PE) command prompt, but can also be run
from the full Windows operating system (OS) by using the /allowFullOS option.
MBR2GPT.EXE is located in the Windows\System32 directory
on a computer running Windows.
Open Command Prompt with
administrator privileges.
Run the following command: mbr2gpt.exe
/convert /allowfullOS
Restart the system and boot into
the system BIOS.
Change the settings from Legacy BIOS
mode to UEFI mode.
If BIOS is UEFI = GPT
Else Legacy
= MBR
Select “Something else” option (So we can guide
to free space harddisk).
a) Installation
of Linux/Root Partition (atleast 20 GB)
Free space > + > Logical (Type of new
Partitions)
Partition EXT 4
Mount point And root with forward /
b) If
want Hard disk to be used as RAM then (Optional step) May be set as half of your
installed RAM
Free space > + > Logical (Type of new
Partitions)
Partition SWAP Area
C) Home Partition
Free space > + > Logical (Type of new
Partitions)
Partition EXT 4
Mount point And root with forward /home
For UEFI: Choose Windows Boot manager
For Legacy: Choose Top most option (i.e Linux Boot Manager)
Click on "Install Now"