How to change Boot Order through iLO – HP ProLiant

Quick steps:

1. Access the iLO IP through the web browser.
2. Click Virtual Media and select Boot Order.
3. Select Legacy BIOS under Boot Mode and click Apply.
4. Power off the server if it’s still ON (GREEN=ON, AMBER=OFF).
5. Under Server Boot Order, select the device you want it to be the first-boot and click on the Up button to move it to the top, and click Apply.

If you got this error:

Persistent boot order cannot be changed during POST

Make sure that the server was powered off first!