Hardware upgrade for Win10 PC ?

[GeeSharp]

So I'm trying to upgrade a few PCs in the house by replacing their MB and CPU with Win11 supported hardware.  I replaced one set MB/CPU (Intel 6xxx->12xxx) in a PC and the Win10 booted back up fine.  I have another where the BIOS reports no bootable drives.  All the drives are listed in the BIOS.  Is it possible that the Win10 install that was done long ago is not compatible with new MB?  Is there something I can do in Win10 to prepare it for upgrade?  Note that this one is more of a stretch from an Intel 4xxx to AMD 9600X.    Just to make sure, I took another SSD I had with Linux and it found the drive and booted fine.

 

Thanks,

Greg

 

[AndrewAsd]

Windows 10 installtion is probably made using an MBR partition not a GPT one, newer bioses might not support these drives out of the box so you'll need to find and change booting mode from UEFI to legacy/BIOS. If you can boot it then you can use a tool like MBR2GPT and convert the partition.

[GeeSharp]

I'll look again, but I didn't see an option for UEFI to legacy/BIOS in the new MB.  I put the old MB back in and booted back up.  So I should run MBR2GPT now?

 

[GeeSharp]

BTW, new MB is Asus B650M-E Wifi.

 

 

[Tetras]

CSM is not supported by Windows 11 or secure boot, but is required to boot from a MBR drive.

[GeeSharp]

So I am back with the old MB/CPU with Win10.  What would be my next step?   Do I run MBR2GPT now?  Will it still boot with the old MB/CPU after I do that?  Hoping to have everything set properly and running with old setup and them swap hardware.

 

Edit:
Just checked, yes the C: is currently MBR.

 

[AndrewAsd]

11 minutes ago, GeeSharp said:

So I am back with the old MB/CPU with Win10.  What would be my next step?   Do I run MBR2GPT now?  Will it still boot with the old MB/CPU after I do that?  Hoping to have everything set properly and running with old setup and them swap hardware.

 

Yes. Just follow a tutorial on how to use it. The old motherboard should still support both partition types.

[GeeSharp]

Yes, all good now.  After converting to GPT, the new MB was able to see the drive.