Author: parsec
Subject: Windows 10 UEFI Boot
Posted: 23 Feb 2017 at 9:58pm
The only possible mistake that could be made I can think of, is if you were using the UEFI/BIOS UI, and only at that point the USB flash drive was connected to the PC. It normally takes a restart of the PC back into the UEFI/BIOS UI before the flash drive is visible in the boot order.
Questions for you, just out of curiosity:
What did the entry in the boot order of the MSoft USB flash drive look like? Was it, "AHCI: <flash drive name>"?
When you used the other USB flash drive, did you get two entries in the boot order for the flash drive?
I have both ASRock Z170 and Z270 boards, and like your B150M Pro4, they use the Intel USB 3.0 ports provided by the chipset, no extra USB 3.0 chips on our boards. So if there was an issue, it would be with the Intel USB 3.0 controller that every mother board manufacture uses with the Skylake and Kaby Lake chipset boards.
I use various Patriot 16GB USB 3.0 flash drives for Window 10 installations, and have never had that problem. Every Windows 10 installation I do is UEFI booting. You may have noticed that for Windows 10, there is no USB 3.0 driver provided for installation. The Microsoft "in box" USB 3.0 driver is used with Windows 10 only.
It would be ironic if MSoft's own USB 3.0 driver provided with Windows 10 had a problem with the USB flash drives they use with their Windows 10 USB flash drive installation product. I believe you that the issue happens, it is just very strange.
One thing that might be the cause is the formatting of the MSoft USB flash drive, but again it would be crazy if they were not formatted correctly by Microsoft. But stranger things have happened in the world of PC hardware.
I know that people that use Rufus to format and create a USB flash drive Windows installation media can have problems if they do not select the correct formatting options provided by Rufus.
Subject: Windows 10 UEFI Boot
Posted: 23 Feb 2017 at 9:58pm
 Alexium67 wrote:Don't worry friend. Problem were solved. I tryed all options in UEFI|/BIOS: CSM, Fast Boot, UEFI only USB etc. That sick just not visible as UEFI boot variable. All folders were fine and files too. Simple copying (1 : 1) to another stick helped me. This another stick were 2.0 but has same folder and file structure as the original. But it booting fine as the UEFI menu item. I fear it maybe small issue in ASRock USB 3.0 controller but... I haven't another MS USB 3.0 original stick for the test. |
The only possible mistake that could be made I can think of, is if you were using the UEFI/BIOS UI, and only at that point the USB flash drive was connected to the PC. It normally takes a restart of the PC back into the UEFI/BIOS UI before the flash drive is visible in the boot order.
Questions for you, just out of curiosity:
What did the entry in the boot order of the MSoft USB flash drive look like? Was it, "AHCI: <flash drive name>"?
When you used the other USB flash drive, did you get two entries in the boot order for the flash drive?
I have both ASRock Z170 and Z270 boards, and like your B150M Pro4, they use the Intel USB 3.0 ports provided by the chipset, no extra USB 3.0 chips on our boards. So if there was an issue, it would be with the Intel USB 3.0 controller that every mother board manufacture uses with the Skylake and Kaby Lake chipset boards.
I use various Patriot 16GB USB 3.0 flash drives for Window 10 installations, and have never had that problem. Every Windows 10 installation I do is UEFI booting. You may have noticed that for Windows 10, there is no USB 3.0 driver provided for installation. The Microsoft "in box" USB 3.0 driver is used with Windows 10 only.
It would be ironic if MSoft's own USB 3.0 driver provided with Windows 10 had a problem with the USB flash drives they use with their Windows 10 USB flash drive installation product. I believe you that the issue happens, it is just very strange.
One thing that might be the cause is the formatting of the MSoft USB flash drive, but again it would be crazy if they were not formatted correctly by Microsoft. But stranger things have happened in the world of PC hardware.
I know that people that use Rufus to format and create a USB flash drive Windows installation media can have problems if they do not select the correct formatting options provided by Rufus.