
##x86 Arista Boot Sequence:
coreboot BIOS/bootloader (on hidden debug header) > aboot (linux) (on front serial header) > linux again (eos)

#ID the SPI flash part number:
[admin@7050QX-32S ~]$ flashUtil --flash-name
MX25L6406E/MX25L6436E
#MX25L6406ezni-12g

#read a section to a bin file:
flashUtil -r prefdl prefdl.bin
#section options:

     total ( entire flash image )
     prefdl
     fdl
     image (aboot)
     fallback ( aboot backup)
	 
#so to dump the whole thing:
flashUtil -r total wholechip.bin

#write the whole thing:
flashUtil -w total wholechip.bin