Google PIxel 5 stuck at fastboot screen device state error Failed to

Google PIxel 5 stuck at fastboot screen device state error Failed to fastboot_ error_ failed to identify current slot I have total 3 slots but only using 1 SSD of 256 gb and 1 HDD of 1 TB , the slot which I'm not using can accommodate another SSD I guess fastboot set active slot Diagnostic mm_mcbe failed with error code 0x380 on management module 15 :17:19:hhmd106001ERR Diagnostic pmc failed with error code

fastboot set active slot AB devices don't have a recovery partition OP needs to do 'fastboot boot > and then flash the installation zip

fastboot_ error_ failed to identify current slot AB devices don't have a recovery partition OP needs to do 'fastboot boot > and then flash the installation zip  The solution was to install the fastboot driver for the phone When plugged in and in fastboot mode, device manager > right click on the device: