cspan wrote: ↑
Thu Apr 12, 2018 5:10 am
I'm able to boot my Pi 3B + from a HDD using a powered SATA dock made by Plugable.
Just an update - I've not found this to be a reliable method of booting in my case. I've tried powering them on simultaneously, powering on the external powered HDD first, and vice-versa. Usually it does not boot. Once in awhile it does on second or third try.
The docking station for the HDD has an LED that is purple when power is applied, but does not turn blue until the Pi (to which it is connected by USB) is connected to a Pi that has been turned on. So perhaps they're still coming on simultaneously, in a sense. I edited config.txt to change the USB boot timeout to 5 seconds, but apparently that's not enough.
If I boot to microSD card, then turn on the drive, it is recognized just fine in the file manager. Just can't seem to get it to reliably boot when the SD card is out.