*** LIBATA SWITCHOVER ***

The "old" ide subsystem in the the linux kernel is now deprecated in favor
  of the newer libata subsystem, and this affects the naming of device nodes
  for almost all types of disk drives -- hard drives in particular will now
  have an "sd" named node.  The following information should allow you to
  handle that changeover gracefully.

  1. Upgrade the kernel and kernel-modules packages normally.
     
  2. Edit /etc/fstab to reflect the change from hd* to sd*.
    
     If you have multiple SATA devices, and especially if you have some of
     both hd* and sd* devices present already, then you're basically going
     to be playing a guessing game right now, and you probably want to
     consider using some of the persistent symlinks in the /dev/disk/by-*/
     directories instead of raw device nodes -- for example, the links in
     /dev/disk/by-id/ should always point to the same device, even if its
     raw device node changes from e.g. sda1 to sdc1 or some such across
     reboots.
 
     * If you are using one of the generic kernels (requiring an initrd),
       then use the sd* name for the root device when creating the image.
     
     * You will almost surely want to remove the udev rules file for cdrom
       devices (it will be regenerated on the next boot with correct
       information reflecting the new libata stuff):  
         # rm -f /etc/udev/rules.d/70-persistent-cd.rules 

     * Speaking of optical devices, if you have multiple disk drives and an
       optical drive using the old ide subsystem, then be aware that the
       optical drive will get a /dev/sr* name instead of /dev/sd* -- this is
       relevant because you might see something like this (if your optical
       drive is currently /dev/hdb):
 
         Old Name --> New Name 
         /dev/hda     /dev/sda
         /dev/hdb     /dev/sr0
         /dev/hdc     /dev/sdb
 
  3. Run lilo.  Note that you have made no edits at all to it yet, unless
     you needed to edit it for the new kernel.  Specifically, do not make
     any changes with respect to hd* --> sd*.
 
  4. Reboot.  At the lilo prompt, press <TAB> and add an append for the
     real root device (which will no longer be /dev/hd*).  For example, if
     the old root device was /dev/hda1, and it will now be /dev/sda1, and
     the name of your kernel image is "Linux" then you would do this:

       Linux root=/dev/sda1

  5. Once the system comes back up, then fix /etc/lilo.conf, run lilo, and 
     reboot again to be sure everything is correct.