We just acquired an R730 with the dual IDSDM option.I am unable to directly select the IDSDM /SD card as a boot option in either BIOS or UFEI.
Firmware has been updated to the latest revision. OS installed on SD cards is FreeNAS.
The only way to get the system to boot from the SD cards is to go through the boot process, have it fail when it can't find the "C" drive, or anything else and then select one time boot option and then select the SD card.
Suggestions/fixes would be appreciated.