Is a reinstall required when switching from Intel to AMD
Is a reinstall required when switching from Intel to AMD
Hi all, I'm switching motherboards. No dGPU. Going from an Intel MB to an AMD one. I have my root partition on an nvme and the home one on a 2.5" sata. Do I need to reinstall, or can I just move the drives from the old MB to the new one without a problem? Figured since both Intel and AMD drivers are both baked into the kernel out of the box, wouldn't it just work and I'll only need to remove the Intel stuff? I'm running good ole endeavourOS with KDE Plasma if that makes any difference. Any insight is much appreciated
Intel and amd are compatible because they are both the same architecture. The only times you would need to reinstall is if the architecture changes; eg, 32-bit to 64-bit or you started using an arm based processor.
48Got it. Thank you so much.
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You may potentially need to edit your kernel boot parameters in grub or w/e bootloader you're using, in case you're early-loading any CPU microcode. For instance, if you're loading your Intel microcode via GRUB, you may need to run
grub-mkconfigfrom a chroot (or your old system, if it's still accessible), or edit yourgrub.cfgand check theinitrdparameter. But if you're late-loading microcode then you don't need to worry about it (although late-loading is discouraged and will taint the kernel).Best to check your distro's documentation on how to update the initrd / microcode.
21I have not made any special changes to the kernel parameters. Everything is stock. Only thing I did is hide grub menu from etc/default/grub. That's all.
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I upgraded my girlfriends PC grom a i7-4770 too a Ryzen 2600 and just moved the drive without any problems.
I don't needed to update or change anything. Only needed to select the drive in the bios.
11That's reassuring, thank you!
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Permanently Deleted
10MB is a gigabyte one. I'll do what I can to remove all the Intel stuff. I mean, if it comes to it, I can easily reinstall. My home partition is separate on its own drive, so a reinstall shouldn't be an issue aside from reinstalling my apps back.
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Sure there are edge cases and whatnot, but just go ahead and move the drive over. If it doesn't work I'll buy you a beer.
8❤️ 🍻
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I just did this a couple weeks back. Absolutely no issues of any kind.
8Should just work. No need to reinstall. You are correct in thinking that all the drivers are included, and furthermore, the drivers on Linux are typically loaded automatically when the hardware is detected on every boot, and this is not configured anywhere in a file or anything like that.
Usually, anyway. In theory it's possible that you manually (or some tool) hardcoded drivers somewhere, like in xorg.conf, but I'm willing to bet that isn't the case.
7Awesome, thank you so much.
2Tanget: Is it possible to skip this detection step for a faster boot?
1No... Not in practice anyway, maybe in theory. I know on ARM SoCs there's lack of auto-configuration (like you have on PCs with e.g. PCI), and the kernel has no way of knowing what hardware is available. So there's a file that lists all the devices, and how to talk to them, called (I think) a "device tree". This file gets appended to the kernel image, and so the bootloader just loads that together with the kernel. The kernel doesn't do any auto-configuration and rather just reads this file and loads the relevant drivers based on that. I guess it might be (in theory) possible to do this on PC, but I've never heard of such a thing. I also don't expect that to make any noticeable difference for boot times. Pretty sure boot times are dominated by user space, and not the kernel anyway.
Sidenote (don't do this): You can compile your own kernel (this used to be pretty common back in the day). You can select only the drivers you need, and can also select whether they should be compiled directly into the kernel or as modules that can be loaded later if needed. Pretty sure the auto-detection happens regardless for most hardware, since the driver needs to be initialized and told where the hardware is to be found. Compiling a driver right into the kernel just means the driver code is in memory right from the very start. I don't recommend doing this btw, the only difference you will notice is shit not working due to you screwing up, and you're going to waste a bunch of time and electricity compiling your kernel with every update. You sometimes needed to do this to get all your hardware working, but I haven't done this in ages.
2I think you can regenerate your initramfs image to only include your currently loaded modules instead of all modules, which should speed things up a bit.
https://elundivided.wordpress.com/2020/01/23/faster-boot-with-trimmed-initramfs/
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Just make sure to install
amd-ucode7Reinstalling is only needed when the old and new CPU differ in architecture. Since these two don't, you don't have to reinstall, just make sure you install the
amd-ucodepackage :)6Just installed the AMD-ucode. Thank you
3Happy to help!
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It will work, but swap the microcode afterwards.
6As you’ve read from the comments it will work just fine.
On the other hand I’ve never done this major of a hardware change without a reinstall. I’d always be concerned if something is wiggy if it was some ghost in the machine from the previous install.
Now I also work in enterprise level IT so even my home stuff is a fairly automated install process with ansible and the like. Then again a lot of it is also virtual so take this with a grain of salt.
4I actually did run into some of those "ghosts". Lol Nothing major, though. I've been thinking of doing a complete clean install anyway since I haven't done it in a very long time. Like, I want to even nuke my home partition and redo the whole thing.
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