I have switched to CM5 and am currently running it with an SD card, but considering durability, I would like to boot from a USB drive or SSD connected via USB. However, I don’t know how to do it.
Joe on TindieのuConsole USB拡張ボード
In addition to the standard USB port, a USB hub is attached as mentioned above.
you can’t, they broke usb boot with the v5 mainboard to fix an issue with the cm3 not turning off properly
Does the OS prevent USB booting?
the USB ports aren’t powered until the kernel is loaded
That’s the specification, isn’t it?
Do you have a link about this issue?
I found these old threads on the forum, but besides that I just know what @Rex told me
Thank you. I guess that may be the power sequence problem. VBUS is behind the SYS_5V, so when CM4 powers on, the USB driver is not powered on. I will connect those power rails to an oscilloscope to check if it’s the problem tomorrow.
Will this method work to boot from usb? Internal mass storage device - #35 by u0d7i