Dell PowerSwitch S4048-ON Installation Guide February 2024

Example of the grub bootloader

POST runs every time that the switch is initialized and checks hardware components to determine if the switch is fully operational before booting. After POST, the switch uses the Grub bootloader.

Use the up and down arrow keys to select which entry is highlighted. Press Enter to select an OS or enter e to edit the commands before booting. Enter c for a command line. The highlighted entry runs automatically in the operating system.

GNU GRUB  version 2.02~beta2+e4a1fe391

 +----------------------------------+
 |*ONIE: Install OS                 |
 | ONIE: Rescue                     |
 | ONIE: Uninstall OS               |
 | ONIE: Update ONIE                |
 | ONIE: Embed ONIE                 |
 | ONIE: Diag ONIE                  |
 | Dell EMC DIAG                    |
 |                                  |
 |                                  |
 |                                  |
 |                                  |
 |                                  |
 +----------------------------------+

Your switch comes with ONIE installed.

ONIE: Install OS
	For downloading and installing an OS from a URL
	Starts ONIE with ONIE Discovery Service
	(factory default boot)
ONIE: Rescue
	Starts ONIE without ONIE Discovery Service
	Useful for running Diagnostics manually
ONIE: Uninstall OS
	Restore to factory defaults erases any installed OS
ONIE: Update ONIE
	For downloading and updating ONIE from a URL
ONIE: Embed ONIE
	For downloading and updating ONIE from a URL and erases any installed OS
ONIE: Diag ONIE
	Run Diagnostic package for S4048-ON
Dell EMC DIAG
  Run Dell EMC Networking Diagnostic package for <platform>

During initial setup, the switch boots to ONIE Install. ONIE Install boots with ONIE Discovery to the console (ONIE:).