Question: I’m rather short on space in my system drive, and was wondering if there’s a way to move MSOCache to another drive manually, or with a tool so I can still update my Microsoft Office install without having to find the CDs again.
Answer: You would need to copy the entire folder to it’s new location, then clear the old folder and replace it with a symbolic link to the new location.
Here is a MSDN post regarding creating symlinks if you want more detail, but briefly in your case you need to do something like the following from a command prompt (that must have Admin privileges) that is currently pointing at the root of your C-Drive.
mklink /D “C:MSOCache” “D:NewFolderForMSOCache”