System Setup enables you to specify the boot mode for installing
your operating system:
BIOS boot mode (the default) is the standard BIOS-level
boot interface.
UEFI boot mode is an enhanced 64-bit boot interface
based on Unified Extensible Firmware Interface (UEFI) specifications
that overlays the system BIOS.
You must select the boot mode in the Boot Mode field of the Boot Settings Screen of System Setup. Once you specify the boot mode, the system boots
in the specified boot mode and you then proceed to install your operating
system from that mode. Thereafter, you must boot the system in the
same boot mode (BIOS or UEFI) to access the installed operating system.
Trying to boot the operating system from the other boot mode will
cause the system to halt at startup.
NOTE: Operating systems must
be UEFI-compatible to be installed from the UEFI boot mode. DOS and
32-bit operating systems do not support UEFI and can only be installed
from the BIOS boot mode.
NOTE: For the latest information
on supported operating systems, see Dell.com/ossupport.
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