bootable disk not recognised

[RobinHasCake]

Hello Tech Tippers, 

 

I have recently bought myself a new mobo / RAM / CPU. I still had a good powersupply and GPU, so I decided to not switch those out. 

I have installed my new hardware, and everything up to the bios is going great. 
When in the bios, it says no bootable drive is detected. The weird thing is, the drives themselves are detected, but they are not showing up as bootable drives. 

 

Then I decided to see if I could boot off of an USB drive, which brought me 1 step further. But also here it says it does not detect a place to install windows (It doesn't see the drives). 

 

files: screenshot with dark background: Bios does detect drives, and USB, but only USB shows as bootable 

screenshot with quite empty screen: when booting from USB, windows doesn't detect drives it can install on

screenshot with file structure: when selecting "load driver", it does detect a drive, with windows file structure on it. 

 

could sum1 please help me, with how I can get the drive(s) to be recognised as bootable drive? 

 

~Thanks in advance
Yours, 
Robin 

[Tan3l6]

Why are all the disks reported RAID? 

[RobinHasCake]

no idea 

[Tan3l6]

Just now, RobinHasCake said:

no idea 

If you can switch them to AHCI in BIOS it might help.

I don't know the BIOS options to help though.

[RobinHasCake]

I don't know how to do that. 
I mean, I have looked for AHCI in the BIOS, but it returns 0 results. 

Also I have been looking for any information about drives, or anything that could relate, but I cannot find anything that seems useful. 

Some specs, that may help: 

my old CPU was an intel 4th gen i5

my new CPU is an intel 12th gen i5 
I have windows 10 installed on my SSD, that I have now connected to my new motherboard (asus prime B660-plus B4)

 

somebody suggested it may have to do with drivers not recognising my drives or something, but I have no idea how I could fix this, because I cannot boot into windows on my desktop anymore. 
I do have a laptop, which I can use to get drivers, or a windows boot USB or something. 

[SlayerOfHellWyrm]

Very weird that it's showing all 3 drives in a RAID array... not sure what's up with that. I would make sure you have the latest BIOS first and foremost. It seems like these drives are from the old system, yeah? Did you have them in a RAID there, or, how was the system configured prior?

[-rascal-]

Your three drives are in RAID mode.

Go into the BIOS, and disable RAID / change to AHCI mode.

 

ALSO, it a recommended to ONLY connect the SSD you want to install Windows on.

Disconnect / disable all other drives.

Windows has the tendency to sometimes install the Master Boot Record (MBR) onto the wrong drive....and that will mess up your Windows install.

I.E. 1/2 of the Windows install is on one drive, and the other 1/2 is on another drive.

[RobinHasCake]

yes, the drives are from the old system. 
The drives were not setup as a RAID, I had them just as "normal" storage drives. 
I do have something with RAID, but that's a seperate NAS, that has nothing to do with this system 

[RobinHasCake]

2 minutes ago, -rascal- said:

Your three drives are in RAID mode.

Go into the BIOS, and disable RAID / change to AHCI mode.

 

ALSO, it a recommended to ONLY connect the SSD you want to install Windows on.

Disconnect / disable all other drives.

Windows has the tendency to sometimes install the Master Boot Record (MBR) onto the wrong drive....and that will mess up your Windows install.

I.E. 1/2 of the Windows install is on one drive, and the other 1/2 is on another drive.

How do I disable RAID? 
I cannot find anything where I could do such a thing. 
Searching for RAID/AHCI also doesn't return anything. 

[RobinHasCake]

Hmm I found some drive settings, under intel rapid storage technology. 
Here it says all my drives are not RAID (indeed they show AHCI). 

 

But still on the homepage, they are shown as RAID. 

[-rascal-]

51 minutes ago, RobinHasCake said:

How do I disable RAID? 
I cannot find anything where I could do such a thing. 
Searching for RAID/AHCI also doesn't return anything. 

 

29 minutes ago, RobinHasCake said:

Hmm I found some drive settings, under intel rapid storage technology. 
Here it says all my drives are not RAID (indeed they show AHCI). 

 

But still on the homepage, they are shown as RAID. 

 

The motherboard manual is pretty....slim.

 

Disable Rapid Storage.

 

 

If the drives are in AHCI mode, it SHOULD say so right in the main menu.

[RobinHasCake]

for whatever reason, my cards are now showing as AHCI, but I still do not see them on the bootable drive list. 

 

[RobinHasCake]

could it be to do with the possible mismatch between 4th and 12th gen intel
or maybe the fact that I have windows 10 on my drive, which could bork something like drivers or something, on the new 12th gen? 

[RobinHasCake]

I am in contact with Asus support, let's see if this brings me closer to the problem's cause 

[RobinHasCake]

Alright, asus support has told me to toggle CSM, which has fixed the problem. 

I asked him why it helped, and he said this: 
 

 

Quote

 

Jerome_C.

Since you're using a M.2 the BIOS need to be set to UEFI in order for the BIOS to detect M.2 drives.

CSM will convert the BIOS from legacy BIOS to UEFI.

 

 

[-rascal-]

Oh right!

Booting from M.2 / NVMe needs to be in UEFI mode....that should be the default for a newer platform like 12th Gen.

Did you set it Legacy mode on your new build?

 

[RobinHasCake]

I think it may have defaulted to it because I had no GPU installed at some point, as a part of problemsolving 

the technician asked me to toggle CSM, which was disabled and blacked out, cuz the GPU wasn't installed 

I still don't get why GPU has anything to do with drives not being recognised, and/or how inserting the GPU has somehow solved it... but it's fixed, so that's good

 

[RobinHasCake]

Also, thanks for the help, guys