Solution 1 (for general scenarios)
Perform the following steps to disable boot from SAN in the FC HBA BIOS:
1. Restart the server, and press Ctrl+B as prompted to enter the HBA card configuration screen, as shown in Figure 1.
Figure 1 HBA card configuration screen
2. Set BIOS to Disable and press Alt+S to save the settings and exit.
Solution 2 (for the RH5485 only)
Restart the server to enter the BIOS and the first boot option to Legacy Only.