HP Smart Array P410i controller - change mode from RAID to HBA mode

This is the easiest way I found to do this on i2 (and maybe i4/i6) bl860c i2 blades:

launch the efi shell

drivers

# in first column, find the driver that corresponds to Smart Array SAS Driver

# in my case it was A3

devices

# in first column, find the device, Smart Array P420i Controller

# in my case it was A1

drvcfg -s a3 a1

sometimes you get a "drvcfg: Driver image handle [A3] does not support Driver Configuration Protocol"

that is most likely the version of the EFI driver, v3.54 supports this, but at least v3.50 does not