Reference Guide

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u-Boot
All commands in this chapter are in u-Boot and are supported on the Dell Networking S4820T platform only.
To access this mode, press any key when the following line appears on the console during a system boot.
Hit any key to stop autoboot:
Enter u-Boot immediately, as the => prompt indicates.
NOTE: This chapter describes only a few commands available in u-Boot. The commands included here are those
commands that are comparable to those commands found in Boot User mode on other S-Series systems.
NOTE: You cannot use the Tab key to complete commands in this mode.
printenv
Display the current system boot variable and other system settings.
S4820T
Syntax
printenv
Command Modes uBoot
Command History
This guide is platform-specific. For command information about other platforms, refer to the
relevant FTOS Command Line Reference Guide .
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.7.0 Introduced on the S4810.
Example
=> printenv
baudrate=9600
uboot_filesize=0x80000
bootfile=FTOS-SC-1.2.0.0E3.bin
bootcmd=echo Booting primary bootline....;
$primary_boot;boot;echo
Failed;echo Booting secondary bootline....;
$secondary_boot;boot;echo
Failed;echo Booting default bootline....;
$default_boot;boot;echo Failed;echo
Rebooting...;reset
bootdelay=5
loads_echo=1
rootpath=/opt/nfsroot
hostname=unknown
loadaddr=640000
ftpuser=force10
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