Acnodes OPC 8190 - Manual (Page 52)

IRQ. Here are the options for your selection, Auto, Enabled
and Disabled.
 Wait For ‘F1’ If Error
If this item is enabled, the system waits for the F1 key to be
pressed when error occurs. The default setting is Enabled.
 Hit ‘DEL’ Message Display
If this item is enabled, the system displays the message
“Press DEL to run Setup” during POST. The default setting
is Enabled.
 Boot Device Priority
The Boot Device Priority screen specifies the the boot device
priority sequence from the available devices.