B450 pro 4 M.2 boot issue

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kerberos_20 View Drop Down

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Joined: 06 Dec 2017
Location: czech republic
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Posted: 29 Aug 2018 at 3:23am

uefi is caching boot records

u may need to clean it

first of all unplug every drive u have connected

then go to bios, go to boot tab and u should see in there something like boot override, select efi shell

u should see command line now

To dump a list of current boot entries:

Shell> bcfg boot dump -v

remove all once by one

To remove the 1st boot option: Shell> bcfg boot rm 0

To remove the 2nd boot option: Shell> bcfg boot rm 1

and so on

once done, power of pc, plug in m.2 and boot from usb install media

try again install win now (with only m.2 + usb pen)

userbenchmark

datonyb

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Posted: 29 Aug 2018 at 4:09am

can i also add

make a new usb windows installer using the windows media creation tool

google it

it makes the windows install usb itself and is the very most current version you can use your current windows key

[url=https://valid.x86.fr/jpg250]

[/url]

3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

Ktech

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Posted: 28 Oct 2018 at 1:39pm

Please upgrade new Bios 1.50 then

Setup with Clean all Key Boot

> Secure Boot = Enable Only

> CSM = Disable

> Boot from UEFI Windows manager (Windows 10)

Hope this will help

K-Tech

voxdei

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Posted: 04 Nov 2018 at 2:42am

I would be weary of bios 1.50 for the B450.

I have the B450M Pro4 and up-dated to the 1.50 bios from the 1.20 bios and ended up
thinking I would have to RMA it.

After first updating (using the ROM Bios Update function in 1.20) it appeared to work fine.
The only change I made (same as under the 1.20 bios) was to set my memory XMP to 3200 and AUTO.

From there, things went down hill. Trying to boot gave error messages about not finding missing kernel files, etc., and this was attempting to fix things using the Windows install disk and even my
Disk Imaging Emergency Boot disk (from a CD/DVD drive).

This is all under Win 64 Pro which had been working fine under the 1.20 bios.

Then, after a couple of attempts to fix the boot order and reboots (sometimes it would not even boot into the bios screen) the 1.50 bios would freeze either when I tried to change a value or use the ROM Update feature (to go back to 1.20 bios) or freeze when I made changes and attempted to "Save and Exit". The Press F6 option would not work and would either freeze the mobo or tell me that it could not find a valid ROM image (which was not true).

Finally, my last desperate option was pulling the battery out for an hour and shunting the "Clear Bios" jumpers. That got me a boot into the base bios and I updated to 1.20 bios, set my memory to 3200/Auto and re-booted and viola, back to my Win64pro OS and everything is OK.

This is the first Asrock board I have used in decades and it also the first motherboard that I have had in decades that went south that bad doing a bios update. It is also the first board in a long time that did not have an external "Clear Cmos" button, so doing it on the B450 means opening the case, removing the graphics card, removing the battery, getting a LONG needle nose pliers and finding a tiny shunt to reset the two "clear bios" pins on the mobo. sucks.....

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
kerberos_20 Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 06 Dec 2017 Location: czech republic Status: Offline Points: 3672	Post Options Post Reply Quote kerberos_20 Report Post Thanks(0) Quote Reply Posted: 29 Aug 2018 at 3:23am
	uefi is caching boot records u may need to clean it first of all unplug every drive u have connected then go to bios, go to boot tab and u should see in there something like boot override, select efi shell u should see command line now To dump a list of current boot entries: Shell> bcfg boot dump -v remove all once by one To remove the 1st boot option: Shell> bcfg boot rm 0 To remove the 2nd boot option: Shell> bcfg boot rm 1 and so on once done, power of pc, plug in m.2 and boot from usb install media try again install win now (with only m.2 + usb pen)
	userbenchmark

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 29 Aug 2018 at 4:09am
	can i also add make a new usb windows installer using the windows media creation tool google it it makes the windows install usb itself and is the very most current version you can use your current windows key
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

Ktech Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 28 Oct 2018 Location: Melbourne Status: Offline Points: 1	Post Options Post Reply Quote Ktech Report Post Thanks(0) Quote Reply Posted: 28 Oct 2018 at 1:39pm
	Please upgrade new Bios 1.50 then Setup with Clean all Key Boot > Secure Boot = Enable Only > CSM = Disable > Boot from UEFI Windows manager (Windows 10) Hope this will help
	K-Tech

voxdei Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 04 Nov 2018 Status: Offline Points: 3	Post Options Post Reply Quote voxdei Report Post Thanks(0) Quote Reply Posted: 04 Nov 2018 at 2:42am
	I would be weary of bios 1.50 for the B450. I have the B450M Pro4 and up-dated to the 1.50 bios from the 1.20 bios and ended up thinking I would have to RMA it. After first updating (using the ROM Bios Update function in 1.20) it appeared to work fine. The only change I made (same as under the 1.20 bios) was to set my memory XMP to 3200 and AUTO. From there, things went down hill. Trying to boot gave error messages about not finding missing kernel files, etc., and this was attempting to fix things using the Windows install disk and even my Disk Imaging Emergency Boot disk (from a CD/DVD drive). This is all under Win 64 Pro which had been working fine under the 1.20 bios. Then, after a couple of attempts to fix the boot order and reboots (sometimes it would not even boot into the bios screen) the 1.50 bios would freeze either when I tried to change a value or use the ROM Update feature (to go back to 1.20 bios) or freeze when I made changes and attempted to "Save and Exit". The Press F6 option would not work and would either freeze the mobo or tell me that it could not find a valid ROM image (which was not true). Finally, my last desperate option was pulling the battery out for an hour and shunting the "Clear Bios" jumpers. That got me a boot into the base bios and I updated to 1.20 bios, set my memory to 3200/Auto and re-booted and viola, back to my Win64pro OS and everything is OK. This is the first Asrock board I have used in decades and it also the first motherboard that I have had in decades that went south that bad doing a bios update. It is also the first board in a long time that did not have an external "Clear Cmos" button, so doing it on the B450 means opening the case, removing the graphics card, removing the battery, getting a LONG needle nose pliers and finding a tiny shunt to reset the two "clear bios" pins on the mobo. sucks.....