os doesn't boot, "filesystem needs repair."

[m.roth2006 at rcn.com]

Paula,

>Date: Tue, 08 May 2007 08:02:19 -0700
>From: "Paula J. Lindsay" <paula at scripps.edu>  
>
>I have an IBM array box running RHE AS 4 with the kernel 2.6.9-42.  This 
>box has been down for almost 2 weeks.  I had to do a filesystem rebuild, and
>then a filesystem repair.  I could not finish the repair because it was 
>going on 3 days of repairing.  I don't think this is unusual because the 
>box is a total
>of 1.5 terabytes.  Anyway, I've run all the hardware diagnostics and 
>come up with everything passing these tests.  IBM wants me to run an 
>ibm.iso to
<snip>
First question: what filesystem (ext2,3, reiser, xfs,?). Second, there is a "do it all without prompting" switch.

    mark "good luck...."