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Diffstat (limited to '3 Resources/Linux/PXE.md')
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diff --git a/3 Resources/Linux/PXE.md b/3 Resources/Linux/PXE.md new file mode 100644 index 0000000..dcd59e7 --- /dev/null +++ b/3 Resources/Linux/PXE.md @@ -0,0 +1,19 @@ +--- +tags: + - linux +--- +The NBP is a bootloader that is obtained via the network typically via [[TFTP]]. It handles setting up an environment in which an OS can run or install. For example, it displays a boot menu and downloads the kernel images. It sets up hardware, for example the [[NIC]]s. + +PXE boot process: +1. Modified [[DHCP]] request: request to include boot information (PXE boot request). +2. Process DHCP response which includes an IP address of [[TFTP]] server and filename of [[NBP]]. +3. Download NBP over TFTP. +4. NBP executes + 1. Loads additional stuff over network, like kernel images. + 2. Handles the boot menu +5. Kernel takes over boot process and potentially downloads additional files required to complete booting. + +Popular NBP's: +- PXELINUX +- iPXE +- GRUB2 |