Users Guide

For an ONIE-enabled switch, go to the ONIE boot menu. An ONIE-enabled switch boots up with pre-loaded diagnostics (DIAGs) and ONIE
software.
+--------------------------------------------------------+
|*ONIE: Install OS |
| ONIE: Rescue |
| ONIE: Uninstall OS |
| ONIE: Update ONIE |
| ONIE: Embed ONIE |
| ONIE: Diag ONIE |
+--------------------------------------------------------+
• Install OS — Boots to the ONIE prompt and installs an OS10 image using the Automatic Discovery process. When ONIE installs a new
OS image, the previously installed image and OS10 conguration are deleted.
• Rescue — Boots to the ONIE prompt and enables manual installation of an OS10 image or ONIE update.
• Uninstall OS — Deletes the contents of all disk partitions, including the OS10 conguration, except ONIE and diagnostics.
• Update ONIE — Installs a new ONIE version.
• Embed ONIE — Formats the disk and installs ONIE.
• EDA DIAG — Runs the system diagnostics.
After the ONIE process installs an OS10 image and you later reboot the switch in ONIE: Install OS mode (default), ONIE takes
ownership of the system and remains in Install mode (ONIE Install mode is sticky) until an OS10 image successfully installs again. To boot
the switch from ONIE for any reason other than installation, select the ONIE: Rescue or ONIE: Update ONIE option from the ONIE
boot menu.
CAUTION
: During an automatic or manual OS10 installation, if an error condition occurs that results in an unsuccessful
installation and if there is an existing OS on the device, select Uninstall OS to clear the partitions. If the problem persists,
contact Dell EMC Technical Support.
Automatic installation
You can automatically install an OS10 image on a Dell EMC ONIE-enabled device. This process is known as zero-touch install. After the
device boots to ONIE: Install OS, ONIE auto-discovery follows these steps to locate the installer le and uses the rst successful
method:
1 Use a statically congured path that is passed from the boot loader.
2 Search le systems on locally attached devices, such as USB.
3 Search the exact URLs from a DHCPv4 server.
4 Search the inexact URLs based on the DHCP responses.
5 Search IPv6 neighbors.
6 Start a TFTP waterfall.
The ONIE automatic discovery process locates the stored software image, downloads and installs it, and reboots the device with the new
image. Auto-discovery repeats until a successful software image installation occurs and reboots the switch.
ONIE discovery — Usage information
• All ONIE auto-discovery methods download and run only supported default le names, such as onie-installer. The required le
names and search order are described on the Open Network Install Environment website at Image Discovery and Execution. For more
information, see the Open Networking Hardware Diagnostic Guide on the Dell EMC Support site.
• If you use a DHCPv4 server, ONIE auto-discovery obtains the hostname, domain name, Management interface IP address, and the IP
address of the domain name server (DNS) from the DHCP server and DHCP options. It also searches SCP, FTP, or TFTP servers with
the default DNS of the ONIE server. DHCP options are not used to provide the server IP.
• If you use a USB storage device, ONIE searches only FAT or EXT2 le systems for an OS10 image.
Example: OS10 automatic installation
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Getting Started