Out-of-band method: See the IMM2 documentation (Integrated Management Module II User's Guide) at
https://systemx.lenovofiles.com/help/topic/com.lenovo.sysx.imm2.doc/printable_doc.html.
For more information about UEFI-compliant firmware, go to https://support.lenovo.com/us/en/solutions/
ht103672.
Automated boot recovery (ABR)
This topic provides instructions on how to recover the server primary bank firmware.
If the server is booting up and the IMM detects problems with the server firmware in the primary bank, it will
automatically switch to the backup firmware bank and give you the opportunity to recover the primary bank.
To recover to the server firmware primary bank, complete the following steps.
Step 1. Restart the server.
Step 2. When the prompt press F3 to restore to primary is displayed, press F3 to recover the primary bank.
Pressing F3 will restart the server.
Nx boot failure
This topic provides information about how to set the Nx boot failure feature to set the number of attempts to
automatically restart the server after a POST failure.
Configuration changes, such as added devices or adapter firmware updates, and firmware or application
code problems can cause the server to fail POST (power-on self-test). If this occurs, the server responds in
either of the following ways:
• The server restarts automatically and attempts POST again.
• The server hangs, and you must manually restart the server for the server to attempt POST again.
After a specified number of consecutive attempts (automatic or manual), the Nx boot failure feature causes
the server to revert to the default UEFI configuration and start the Setup utility so that you can make the
necessary corrections to the configuration and restart the server. If the server is unable to successfully
complete POST with the default configuration, there might be a problem with the system board.
To specify the number of consecutive restart attempts in the Setup utility that will trigger the Nx boot failure
feature, complete the following steps. The available values are 3, 6, 9, and Disable (disable Nx boot failure).
Step 1. From the Setup utility main menu, select System Settings..
Step 2. Next select Recovery.
Step 3. Select POST Attempts; then, select POST Attempts Limit.
Step 4. Modify the configuration settings and select Save Settings; then, exit Setup.
Chapter 4. Troubleshooting 199
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