No slot selected but can get to bootloader screen and

Guide: fix-fastboot-error Current Active Slot 04:47 Flash Fastboot ROM

>fastboot flash boot magisk_ fastboot: error: Failed to identify current slot >fastboot flash boot magisk_ fastboot

fastboot get active 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_ error_ failed to identify current slot slot, and the other graphics card to PCIE6 slot Users may refer to the BIOS LEDs to identify which BIOS is currently activated