Help! BIOS isn’t recognising boot drives after update.

DJPUP · 13 Nov 2019 at 20:16

I updated my bios today and it isn’t recognising any of my hard drives as boot drives. I’ve tried re-flashing the bios to the latest version and the version before that. I’ve tried removing the cmos battery for 10 minutes. I’ve tried everything I can but nothing is working. Any suggestions?

my hardware:
Motherboard : ASUS ROG z390-F Gaming
Main boot drive: Samsung 970EVO 250Gb
Other drives: -Seagate BarraCuda SSD 1Tb
-Seagate BarraCuda HDD 4Tb

snips86x · 13 Nov 2019 at 20:17

Can BIOS see the drives?

DJPUP · 13 Nov 2019 at 20:18

Yes the Bios is recognising the drives but isn’t seeing them as boot drives.

DJPUP · 14 Nov 2019 at 11:41

Does anyone know how to resolve this?

varkanoid · 14 Nov 2019 at 13:04

Did you use legacy or UEFI in bios when creating the boot drives ? Is it set to AHCI (IDE Controller) ?

If its set to legacy change it to UEFI and vice versa.

DJPUP · 14 Nov 2019 at 17:00

How do I do that?

I’m new to all this btw

drakulton · 14 Nov 2019 at 17:23

Here's how

https://lmgtfy.com/?q=how+to+change+bios+mode+from+legacy+to+uefi+windows+10&s=g

EsaT · 14 Nov 2019 at 20:29

Disabling CSM forces UEFI boot.
Or alternatively if you've installed Windows in old BIOS/MBR mode, it won't run in UEFI mode.
So what ever setting there's now, change it to another and reboot.

CuriousTomCat · 14 Nov 2019 at 22:01

DJPUP said:
How do I do that?

I’m new to all this btw

Here's the intruction manual for your motherboard. It will definately tell you how to change CSM/UEFI options.

https://www.asus.com/Motherboards/ROG-STRIX-Z390-F-GAMING/HelpDesk_Manual/

DJPUP · 15 Nov 2019 at 18:18

Okay, I’ve set the CSM to have everything boot in legacy and it is now seeing my drives in the boot menu. But when I try and boot from my NVME it says to insert a good drive or insert a bootable media. Does this mean I need to reinstall windows?