Question any difference between installing OS X without formatting the drive VS formatting it?

[Rodion15]

Is it worth reformatting the hard drive to reinstall OS X? (provided you have backed up your data)

 

[McHenryB]

That's odd. A reinstallation, or update, shouldn't lose any data.

 

[Rodion15]

That's odd. A reinstallation, or update, shouldn't lose any data.

maybe you're right, not sure if I lost my data after the reinstallation, I've reworded my post. Thanks

 

[McHenryB]

I've never had any trouble with reinstalling or upgrading OS X, so I would only reformat if I wanted a different partition size or a factory-fresh installation.