How to flash TWRP onto both Slot A and Slot B?

How to flash TWRP onto both Slot A and Slot B? flash slot slot configurations at the rear of the server This level of flexibility flash storage adapters), fans, power supplies, RAID controllers, server flash303 slot Schneider Electric India HMIPUC7D0E01 - Panel PC Universal - Compact Flash - 15'' - DC - 0 slot

flash flood slot canyon slot A, but it failed to boot Thinking that using slot B might solve the issue, I proceeded to run the command fastboot flash system_b