Generation 2 Hyper-V machines use UEFI with Secure Boot; Generation 1 machines rely on this older firmware.
Also called Basic Input/Output System.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains BIOS in context, with comparison tables and the common traps.
Terms in this definition
- Hyper-V
The hypervisor built into Windows. The VMs for the Azure Extended Network appliance require the Hyper-V role, using nested virtualisation, and an external virtual switch for each NIC.
- UEFI
The modern firmware standard that took over from BIOS. Because Hyper-V generation 2 machines use it, they can start up from a virtual SCSI disk and have Secure Boot switched on.
- HTTP / HTTPS
The protocols of the web, with HTTPS being HTTP secured by TLS.
Related terms
- MBR
An older partitioning scheme tied to BIOS, allowing at most four primary partitions and disks up to 2 TB. On UEFI machines, GPT takes its place.