
Basic Input/Output System
ATCA-7540 Installation and Use (6806871A01A)
173
6.4
Boot Support
6.4.1
Boot Mode
BIOS supports
UEFI
boot mode and
Legacy
boot mode.
Legacy boot mode refers to BIOS boot mode introduced by IBM on their first Personal
Computer. UEFI boot mode is specified in the UEFI specification.
Legacy boot from a hard disk uses the Master Boot Record (MBR) partition scheme, whereas
UEFI boot mode uses the GUID Partition Table (GPT).
Legacy boot maintains a list of all devices which may be of bootable type (for example, SATA
devices, network devices).
In UEFI boot mode, BIOS maintains a list of operating system loaders, which are present in the
so called EFI System Partition. The EFI System Partition is a small partition (~100 Mbyte) with
FAT32 file system, which contains the OS loader.
During the POST procedure the UEFI BIOS scans all storage devices that are connected to the
system for a valid GUID Partition Table (GPT). If there is a known boot loader found in the EFI
System Partition, a new entry is added to the boot order list. For example, if the EFI System
Partition contains the \EFI\redhat\grub.efi file, BIOS will add Red Hat Linux to the boot list.
In UEFI boot mode, network devices are handled in the same way as in legacy mode, they are
simply added to the boot order list.
http://www.uefi.org/specifications
).
NOTE: Boot options in the Boot Menu change depending on what is selected. Enabling or
Disabling devices requires the OPROM to be loaded to become an active boot device.
An immediate reboot is recommended to make the boot entry visible.
Содержание ATCA-7540
Страница 1: ...ATCA 7540 Installation and Use P N 6806871A01A December 2018 ...
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Страница 28: ...About this Manual 28 ATCA 7540 Installation and Use 6806871A01A ...
Страница 34: ...Safety Notes 34 ATCA 7540 Installation and Use 6806871A01A ...
Страница 66: ...Hardware Preparation and Installation 66 ATCA 7540 Installation and Use 6806871A01A ...
Страница 276: ...Supported IPMI Commands 276 ATCA 7540 Installation and Use 6806871A01A ...
Страница 322: ...Related Documentation 322 ATCA 7540 Installation and Use 6806871A01A ...
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