j...@jdm.myzen.co.uk writes:

> A little advice please? I am about to build a new box going from athlon
> dual core to phenom six core. Including new sata drives and motherboard.
> I was going to clone all my partitions and the re emerged all packages
> with march native
 
> Firstly would you reccommend cloning and if so what is best technology?

I'd plug the new system drive into the old PC and clone with dd. You can 
even make the partitions larger and use resize2fs (in case of ext3/4) to 
enlarge the space after cloning.

Once caveat: Your new SATA drives are probably using a block size of 4K 
instead of 512 bytes, internally. To the OS they still look like they have 
512 bytes. But when the partitions are not aligned to 4K boundaries (and I 
think this is still the case when using fdisk), there is a big performance 
loss. 

I also would make sure the whole drive is being written to once, in order to 
detect bad blocks. badblocks -sw <device> will do this.

> Second is a complete reinstall a better option or safer?

I'd say just clone it. Remove your /etc/udev/rules.d/*-persistent-*.rules 
files, so your network interfaces will not be renamed from eth0 to eth1.

If you change your CFLAGS, emerge -e world. I'm not sure if you better 
emerge -e system before (once or even twice) so the toolchain is already 
compiled with the new settings, maybe someone else will say something about 
this.

        Wonko

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