I’m using a RPi 4 with two external HDD - one 2.5 usb powered and since a week one 3.5 with external power supply.
However, I’m having some issue with the fact that whenever I need to reboot my system, the 3.5 HDD will shutdown and won’t power up until I click on the power button again.
There is a power button on the case/adapter for the HDD?
I use an adapter with a toggle switch, so when it receives power it will be powered on, no matter what the RPi does.