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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?


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Old 01-19-2008, 07:25 AM   #1
Registered: Aug 2004
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Gentoo and hardware updating.


I currently have an Athlon64 CPU on my computer and I'm about to get new Intel Core 2 Quad CPU + a new mobo soon. I don't want to start from a scratch again so I'm going to move my old hard disk to the new hardware. Problem is (or might be) that I have my current Gentoo installation optimized for Athlon64 (-march=k8). Will this cause problems after changing the hardware? What is the easiest way to avoid having to reinstall the whole OS from a scratch?

Old 01-19-2008, 08:49 AM   #2
Registered: Feb 2006
Location: Venezuela
Distribution: Gentoo
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Yes, it will cause you problems, currently, your gcc flags have compiled everything to work using amd instrucctions, which are different on intel processors, maybe you could try, once you have the disc in the new PC, change the cflags and start by reinstalling the toolchain (binutils, gcc and glibc), then use env-update, then you should re-emerge system and world at least twice using --emptytree, so...basically you'll have to re-emerge every package you've installed and there's a big chance that things might not work even then.

I don't know why you don't want to use a clean install, but whatever your reasons are, you're looking for trouble, it's better use a clean install, if you're worried for some customized configurations, you can always backup and use them in the new install, things like package.use, package.keywords, USEs from make.conf, bashrc....

Old 01-19-2008, 08:22 PM   #3
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Just do a complete world and system update using different CFLAGS. I suggest using the following.

CFLAGS="-march=pentiumpro -mtune=pentium3 -Os"

The Os will cut down on memory usage.


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