How to load sata_nv before pata_amd on Kubuntu Hardy 8.04

[Ric Moore]

On Mon, 2010-11-08 at 02:47 +0100, Reinhold Rumberger wrote:
> On Monday 08 November 2010, Ric Moore wrote:
> > Being an old grey head, I have yet to figure out WTF UUID's are
> > supposed to do for me. I MUCH prefer just using the actual
> > devices.
> 
> device files :-P
> (not just being a smartass either - the device file != device thing 
> is pretty much the main reason for UUIDs)
> 
> There are a couple of problems with this:
> a) add/remove partitions and suddenly your swap entry in fstab points
>    to your home partitions (device name change due to re-
>    partitioning)
> b) some hardware has funny little timing issues where the order in
>    which devices become visible to the kernel, e.g. when you have
>    both sata and pata hard drives - this may cause them to swap names
>    so that every other boot the pata may be sda whereas the rest of
>    the time it is sdb
> c) see Nigel's case. Different distros/kernel versions may load
>    modules in a different order, causing sda of one distro to be the
>    sdb of the other. This just causes confusion
> 
> Have a google - there are other, more bizarre cases for UUIDs/labels.
> 
> > They only thing I can imagine would benefit by such a
> > scheme would be a RAID device. Is that correct? Someone want to
> > educate me on this? I'd appreciate being clued in. Ric
> 
> grub and other bootloaders are affected by these issues, too. This 
> means that in some cases, UUIDs/labels are the only way to keep them 
> booting properly, especially after a partitioning change.
> 
> Another way of putting it:
> By using e.g. /dev/sda, you're addressing the first drive the kernel 
> happens to see, not any particular device. Add to this the fact that 
> partitions aren't always as stable as you'd like them to be and that, 
> should you ever modify partitions, you'll probably forget some 
> important place that needs to be adjusted...
> Having a stable addressing scheme for your more important partitions 
> is a nice thing to have.
> 
> Now consider the case where some people I know put their Ubuntu on an 
> external USB hard drive. Since they probably would like to use other 
> USB drives that may or may not become visible before the Ubuntu 
> drive, they'd have quite a bit of trouble without UUIDs/labels.
> 
> 
> Hope to have given you something to think about...

Thanks, my head hurts now. But, I have some measure of enlightenment
that I didn't have before. I think I'll have to re-read this several
more times though. I miss setting IRQ jumpers on cards and harddrive
jumpers. Heck, I miss CP/M. :) Ric


-- 
My father, Victor Moore (Vic) used to say:
"There are two Great Sins in the world...
..the Sin of Ignorance, and the Sin of Stupidity.
Only the former may be overcome." R.I.P. Dad.
Linux user# 44256