On 06/16/2011 06:58 PM, Yasha Karant wrote:
> This one is from a SL6 install. SL and CentOS are both RHEL.  I keep the system utilities stock (the same as TUV, RHEL in this case), except for the use of 
> the graphics card driver from the graphics card vendor, not generic X (e.g., on this machine, the Nvidia driver for linux X).
> I am switching to SL over CentOS because (1) we do not have funding luxury to license the binaries from RH and (2) CentOS 6 is not yet available despite RHEL 
> 6.1 already having been released.  Other than re-branding, SL and CentOS both claim to be RHEL clones -- I know that the RPMs that work on RHEL release X work 
> just as well on both CentOS and SL of the same release.
>
> (Why not SL over CentOS?  A matter of history, not a specific choice. With the upcoming demise of Fermilab as a direct experimental facility, hopefully the EU 
> will continue to fund CERN and not be shortsighted as USA neoliberal Republican Tea Partists force upon the USA, and thus maintain support for SL.)
>
> I did not reformat / , /var, /usr .  Must these be reformatted? 

Yes, otherwise you will have a mixture of the old system (CentOS5?) and the new SL6 system on /, /var, /usr. This will definitely not work.

If you want to keep old data you have to do an update instead of an install. But I don't know if CentOS5 can be update to SL60 with SL60 install DVD. My guess 
is that this will not work.

To be save make a backup before you format the partitions.


> Will X86-64 SL6 allow me to keep these as ext2 (no journal)?

I think if you choose custom partitioning you can format your partitions with ext2. Just curious, what's the reason to use "old" ext2?

Cheers,

     Urs

>