Change SATA mode to AHCI on installed server

[Kenyon Ralph]

On 2010-09-02T14:27:29-0500, Jorge Armando Medina <jmedina at e-compugraf.com> wrote:
> On 09/01/2010 08:30 AM, Ahmed Kamal wrote:
> >    On 09/01/2010 02:12 PM, Jorge Andres Brugger wrote:
> >> I want to change SATA mode on a server already installed. Should I take
> >> care of something before make the change at the BIOS setup?
> >>
> >> Thanks.
> >
> > The only thing I'd check is that /etc/fstab mounts using UUIDs and not
> > /dev/sd? names. Other than that, just try it, if it doesn't boot, revert
> > the BIOS setting and mention there's a problem
> >
> 
> And of course the root parameter to the kernel image in grub.
> 
> What I dont know is that the UUID will change when you change the sata 
> mode, you can check it out with blkid(8).
> 
> Another way is using the by-id or by-path format, check /dev/disk/by-*

The UUID is part of the file system, so won't change with the disk
interface change. Use dumpe2fs or tune2fs -l to see the UUID on
ext[234]fs, or xfs_admin -u on xfs.

-- 
Kenyon Ralph
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