General Information About UEFI
Please use the “Print” function at the bottom of the page to create a PDF.
IONOS offers Dedicated Servers which use either BIOS or UEFI as the interface between the hardware and the operating system. Both BIOS and UEFI initialize the hardware.
The Unified Extensible Firmware Interface (UEFI) is intended to replace the BIOS in PCs. Unlike BIOS, UEFI has a graphical user interface that you can navigate with both the keyboard and a mouse. In BIOS, navigation is only possible using the keyboard.
In addition, UEFI offers other advantages:
UEFI is a standardized interface (see also http://www.uefi.org/about/).
UEFI was written in C and is expandable
UEFI sets up a GUID partition table (GPT) on the system partition instead of a master boot record (MBR). It thus removes the limitation of the disk capacity to 2.2 TB.
UEFI supports up to 128 primary partitions
UEFI supports Secure Boot. This feature is intended to ensure that important pieces of firmware, such as the Windows boot loader, are only executed if they have been deemed trustworthy by the manufacturer.
UEFI supports secure booting and prevents the PC from being damaged by malware.
UEFI is also networkable without an operating system.
Dedicated servers that use UEFI as an interface between hardware and the operating system use a GUID partition table (GPT) set up on the system partition instead of the master boot record (MBR). UEFI provides its own boot manager for this purpose. This also affects the procedure when you rebuild a software RAID after replacing a defective hard disk.
More information about UEFI can be found here: