On 11/26/15 08:25, freeu...@ruggedinbox.com wrote: > I have USB3.0 flash memory.(SANDISK) > "OpenBSD 5.8 amd64/i386 on USB3.0" > > 1.USB3.0 flash memory connect to USB2.0/1.0 > boot: It's fine. > 2.USB3.0 flash memory connect to USB3.0 > boot: can't boot! > > anyone don't need boot from USB3.0?
LOTS of details missing here, but if you are saying that under whatever mysterious circumstance you can not get the USB3 device to boot it doesn't try to boot at all, this is not an OpenBSD issue. OpenBSD's boot process is dependent upon the system BIOS until the kernel is loaded. So, if there is no attempt to boot, you have a BIOS issue. I've certainly seen this. The answer is a BIOS upgrade that probably doesn't exist, because many manufacturers barely test this feature. Nothing OpenBSD can do to fix it if the HW won't grab and run the boot code. Nick.