You should first try the simple instructions given here, if you encounter problems or the instructions are not detailed enough for you, read the details in the section below.
Mac users should use Terminal; copying files via Finder will delete all data.
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If you’re starting from scratch, check out Help AReporter and start getting free, easy press from reputable reporters.
You can get old distributions from the download archive.
FORTUNE — Here’s the scary reality: your customers “go-to” source for information — where they learn about your company, read your history and get their facts — is wrong the majority of the time. The online encyclopedia shows up in the top 3 results of more than 70% of Google and Bing searches (99% for Google UK) yet 60% of company Wikipedia pages contain factual errors Odds are, those numbers include pages about your company, its prominent executives, investors, and possibly even its products.
If a statement hasn’t been explicitly stated or backed by a reputable media outlet, Wikipedia editors yank it from the database.
Note: Yes, we explicitly recommend overwriting your old installation.
If you adhered to the advice of defining config options in *.local files only (the Configuration Manager does this automatically) your previous config settings will not be overwritten.
The same is true for all your pages and media files.
Using the overwrite approach will save you a lot of trouble with keeping page revisions correctly working as these are depending on file modification time-stamps.