[PLUG] Device ID in Grub

[Tony Rick]

With the proliferation of SATA drives, and platforms with both SATA and PATA
drives,  and the growing popularity of bootable USB sticks and external hard
drives for laptops and backups and such,  drive assignment order (which one
is actually hda, which one is sda, which one is the 'first' or boot device)
got seriously hosed, at least in Debian/Ubuntu.  The introduction of UUID in
fstab, ugly as it looks, was, partially at least, to address those issues.
I don't know much about the technical issues involved. "All I know is what I
read in the papers [read 'forums' for 'papers'].

- tony

On 2/12/07, Wil Cooley <wcooley at nakedape.cc> wrote:
>
> ...
> So you'd like to think.  The old IDE drivers are being replaced by
> libata-based drivers, which is a newly-engineered infrastructure.
> Currently in 2.6.19/.20, the new subsystem is still marked experimental,
> but it looks like Fedora 7 might ship with it in April.  One side-effect
> of the change is that all the devices appear to be SCSI devices, so your
> hda2 will become sda2 (although I wouldn't be surprised if some
> translation ends up happening in the new few releases to make the
> transition smoother).  That's almost certainly the reason Ubuntu has
> started using the filesystem UUID for the boot parameter for the root
> filesystem.
>
> Wil
> --
> Wil Cooley <wcooley at nakedape.cc>
> http://nakedape.cc
>
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