I have a Pi3 with a Sabrient USB-SSD Adapter. The disk works fine and can be mounted. However, when I try to use it as a boot disk, it works only intermittently. Most of the time, there seems to be a timing problem with detecting the disk - in that case the blue LED on the adapter lights up briefly then nothing happens and the LED is off.
Some of the time - say on in fifteen times - the boot process detects the USB drive and boots up fine.
Any idea on how to make this detection more reliable ?
My Pi: model name : ARMv7 Processor rev 4 (v7l)