this is a DELL PE R510.
Not sure of a built in SD card.
i have seen a lot of info on using Rufus to build ESXi onto a flash, but have not tried it.
i want to boot ESXi off of the flash
here are exact numbers,,,
VD0 consists of (2) 1907200 MB drives
VD1 consists of (1) 237824 MB drive
VD2 consists of (1) 953344 MB drive and (4) 476416 MB drives