The main reason for using persistent naming is because the drive name never changes as it does now in Mepis,
the easy way is to run "dpkg-reconfigure linux-base" but that presents a problem, as the system does not recognise the legacy bootloader in Mepis, yes it will run and it will boot, but for how long is anybodys quess. http://dl.dropbox.com/u/53792173/grub-edit10.png
so you have to install Grub2 first, which you would do like this.
disable the Mepis repo in Synaptic, reload search for grub-common and upgrade it.
In Konsole as root,
rm -rf /boot/grub
apt-get purge grub-gfxboot
apt-get install grub2 os-prober desktop-base
when the above is complete you can now enable persistent naming
reboot and re-enable the Mepis repo
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