How can I format the following partition on Redhat 5.2?
/dev/mapper/VG00-LogVol 148G 111G 36G 76% /u001/app/oracle
"Formating" a partition is done by simply creating a filesystem on that device. For example:
But be sure you know what you are doing. You can really destroy data that way.
Red Hat distros should have a GUI tool for this called "Disks" installed, and yes, be extremely careful, especially if you're running on a manufacturer-built machine because often times people end up voiding their warranty messing with partitions because the manufacturers almost always have a partition full of recovery tools hidden somewhere.