This week, we’re spotlighting user Rod Myers (@RodMyers). Rod went above and beyond to troubleshoot install device detection on a system with an Asus motherboard. He also took notes so other community members might be able to avoid or solve similar issues. Thanks Rod!

Here are his notes, with some light editing:


Installing TrueOS on a system with an Asus motherboard with UEFI detect problems


My system has an Asus motherboard. The exact model # is unknown, but it has a graphical bios with mouse support:

American Megatrends (C) 2012

version 2.10.1208


On startup, boot into the BIOS. I pressed either F2 or DEL to open the BIOS. In the BIOS, navigate to the Boot Menu Selection options. Set the CSM (Compatibility Support Module) to AUTO. Under Secure Boot, select Other OS. Press F10 then save and exit.


Reboot the system and open the BIOS again. Select the Boot Menu and scroll down until you see your flash drive with UEFI displayed next to it. For example, a ScanDisk flash drive displays as UEFI ScanDisk. Select the drive. Once selected, the computer boots using UEFI. Press F10 and save/exit once more. This restarts TrueOS in UEFI mode, allowing you to continue installing as per the handbook.



After installation, if the system continues to not start TrueOS in UEFI mode, go back into the BIOS settings to boot the flash drive in UEFI mode. When the TrueOS install is done, reboot the system. The rEFInd boot menu will appear, which means the boot and install process is complete. Otherwise, the system may display a dreaded “reboot and select proper Boot drive” message.

If this error displays, reboot the system and enter the BIOS again. Select the Boot Options and locate the Boot Order selection options. Choose the UEFI OS or UEFI OS:hard drive option. Press F10 to save and exit. Reboot the system and the rEFInd boot option finally displays, completing the boot and install process.