U-Boot implements initialization of serial ports and DIMMs), reads the kernel image from Flash to RAM, and starts the OS. On the U-Boot interface, you can load underlying software and commission underlying devices.

Other related questions:
Server SAN Boot
SAN Boot allows you to start a server from an external SAN storage device running the server's OS and application software. In FC-SAN networking, you can install the server OS on a storage device and set FC-SAN start on the HBA card. After the serve starts and FC HBA card check is complete, the LUNs on the storage devices can be used by the server as local hard disks.

1 U
U is a height unit. 1 U equals to 44.45 mm (1.75 inch).

Setting boot order for a server
You can set the server boot mode using any of the following methods: Method 1: 1) During the server startup process, press F11 to enter Boot Manager. 2) On the Boot page, set the boot device. For example, select HUAWEI DVD-ROM VM 1.1.0 to enable the server to boot from the DVD-ROM drive. Method 2: Set the boot device on the iBMC WebUI. Method 3: Set the boot order on the BIOS. For details, see the BIOS parameter reference. The Romley Platform BIOS Parameter Reference applies to V2 servers. Click Link to download it. The Brickland Platform BIOS Parameter Reference applies to 4- and 8-socket V3 servers. Click Link to download it. The Grantley platform BIOS Parameter Reference applies to 2-socket V3 servers. Click Link to download it. The boot setting configured using methods 1 and 2 takes effect only once. When the server restarts, the boot device set on the BIOS (using method 3) will take effect.

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