2017-03-01, 05:29
(2017-03-01, 04:54)igjunk Wrote: Both EFI & SYSTEM partitions are in-place. I booted from windows 10 USB, and forced recreation of the BCD and bootec. Everything seems fine on the hard drive, but UEFI doesn't seem to recognize it during boot phase. If I hit ESC, it shows me EFI Shell and my internal M.2 SSD hard drive, but not external one.
that sounds like the UEFI firmware is simply having trouble initializing the USB device, for whatever reason. If the device were recognized, even if it were set up for Legacy booting, it would still show up in Boot Manager (as EFI USB device) and then simply fail to boot when you attempted to do so.
I don't know which USB/SSD adapter you're using, but I had more than one problematic mSATA/USB adapter, though it was problematic on more than just ChromeOS devices. Is the drive recognized when plugged in after booting from the internal ssd?
