Earlier quoted context omitted.
How that problem can be solved by an IBM 5100, a computer that has never ran any flavor of unix is a mystery though. I guess we'll find out when we have to send someone into the past to retrieve one so we can fix the bug.
You may not be able to open the files to be fixed in such ancient computer.
To me it seems that in the future they for some reason need to access files that can only be opened on that computer.
If time travel is indeed possible and relatively common, it might be a better business decision to just send someone back in time to fetch a working version of that computer than try to recreate one from archived documentation (if any of it survived).