Users Guide

Restrictions on Downgrade from 10.5.1.x or later to 10.5.0.x or earlier version
After rollback to release 10.5.0.x or an earlier release, the following images are available in the switch:
● Image A: 10.5.0.0 (active)
● Image B: N/A
During this state, you must not use the boot system standby command and reload as the switch might get stuck in the
GRUB shell.
Installation using ONIE
CAUTION: Installing OS10 or another OS using ONIE erases all software configurations on the switch. The
configuration settings are not recoverable. Back up all software configurations and installed licenses on the
switch before performing OS updates or changes. Store a regular backup of the switch configuration off the
switch.
If you purchase an ONIE-only switch or if you want to replace an existing OS, download an OS10 image as described in
Download OS10 image. Then install an OS10 software image using ONIE-based auto-discovery or a manual installation:
● Automatic installation — ONIE discovers network information including the Dynamic Host Configuration Protocol (DHCP)
server, connects to an image server, and downloads and installs an image automatically.
● Manual installation — Manually configure your network information if a DHCP server is not available or if you install the
OS10 software image using USB media.
System setup
Before installation, verify that the system is connected correctly:
● Connect a serial cable and terminal emulator to the console serial port — serial port settings are 115200 baud rate, 8 data
bits, and no parity.
● Connect the Management port to the network to download an image over a network. To locate the Console port and the
Management port, see the platform-specific Installation Guide at www.dell.com/support.
Install OS10
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 configuration 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 configuration, 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.
56 Getting Started with Dell EMC SmartFabric OS10