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
Sign In Create an Account Dell Financial Services Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Carts

How Bootable Devices Work in UEFI Boot Mode

Résumé: This article provides information about how bootable devices work in Unified Extensible Firmware Interface (UEFI) mode.

Cet article concerne Cet article ne concerne pas Cet article n’est associé à aucun produit spécifique. Toutes les versions du produit ne sont pas identifiées dans cet article.
Consulter d’autres ressources

Symptômes

How bootable devices work in UEFI mode:

In order for BIOS to show a UEFI boot option for a fixed disk, there are only two possibilities:

  • The fixed disk has this file EFI\boot\bootX64.efi stored in the root folder
  • The OS installer has created a boot option on the disk.
Note: This boot option is only built during UEFI OS installation. The OS installer code finds the drive (blockIo device) to install the OS and create a boot option.

If the PERC hard drive image was originally installed in legacy BIOS mode, none of the above are true. There is no boot option for BIOS to list in the UEFI boot menu.


Removable media is treated differently:

BIOS always builds a boot option for removable media regardless of media presence. The virtual media (virtual Floppy and Virtual CD) should show up in the UEFI boot menu as removable device boot options. If they do not show up, then they were disabled.

Cause

Not required

Résolution

See above.

Produits concernés

Servers
Propriétés de l’article
Numéro d’article: 000138085
Type d’article: Solution
Dernière modification: 25 Jul 2024
Version:  6
Trouvez des réponses à vos questions auprès d’autres utilisateurs Dell
Services de support
Vérifiez si votre appareil est couvert par les services de support.