Question Changing platform, clean install or repair?

[Thlian]

Switching from Intel i5-11600 with z590 mobo to AMD Ryzen 7 9700x and Gigabyte X870 Gaming X. I hope this will feel like an upgrade, crossing fingers. But, besides checking BIOS settings like UEFI and TPM, is it enough to use bood drive and choose upgrade during the install. Or is it best just to do a clean install?

If I need a clean install. Would you recommend installing it on my Samsung 970 Pro M.2 Nvme? Or continue to use the older 2,5" 500gb ssd I'm running on now? (I also have a 250gb 2,5" ssd).
If I it will make the system faster with the MUCH faster m.2 drive. I will do that. Guess CSM always should be disabled? Dunno why this has been an issue detecting a m.2. Never had any issues using this on my Intel board with CSM disabled. (Read about it on a forum).

Any input would be appreciated before I start.

 

[Colif]

clean install

all new hardware, start fresh. Especially when swapping CPU/MB

less chance of errors. No chance of old drivers making a mess.

put it on nvme, boot times and loading of applications will be faster than ssd.

csm needs to be off as you want to use UEFI boot in Windows 11.

 

[Lafong]

Be sure to have just ONE drive connected during the install.

You don't have to prepare the drive beforehand. The installation process for a USB flash drive will do whatever is necessary.

 

[Misgar]

Would you recommend installing it on my Samsung 970 Pro M.2 Nvme? Or continue to use the older 2,5" 500gb ssd I'm running on now? (I also have a 250gb 2,5" ssd).

My preference would be to install the new OS on the NVMe drive, but I have loads of old machines still booting from SATA drives.

Guess CSM always should be disabled?

On some of my older systems where I still need CSM, I dive into the BIOS and select "UEFI first, CSM second" if appropriate. Otherwise, "UEFI only" is the way to go on a modern system.