Well it depends on what and how it was previously installed...
We now cannot say more since you "re"installed the OS...
Have you an idea of the previous installation? (especially the mount points and file systems...)
I wonder if you would not have more success in specific SCO group since your questions are more OS specific admin (even if basic) than Dummies Q&A
In order to follow the rules, if you wish this thread can be moved there...
All the best