Skip to main content
Sign Out

Welcome to Dell

My Account
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Enjoy members-only rewards and discounts
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.
Sign In Create an Account Dell Financial Services Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Carts

Dell PowerEdge T20 Owner's Manual

PDF

Choosing The System Boot Mode

System Setup enables you to specify the boot mode for installing your operating system:
  • Legacy boot mode (the default) is the standard BIOS-level boot interface.
  • Unified Extensible Firmware Interface (UEFI) boot mode is an enhanced 64-bit boot interface based on UEFI specifications that overlays the system BIOS.

In System Setup, select boot mode in the Boot List Option field of the Boot Sequence screen. Once you specify the boot mode, the system boots in the specified boot mode and then proceeds to install your operating system from that mode. Thereafter, you must boot the system in the same boot mode (Legacy 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 Legacy boot mode.
  • NOTE: For the latest information on supported operating systems, go to dell.com/ossupport.

Rate this content

Accurate
Useful
Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\