I wanted to do that too but I heard it gets pretty slow if you do an upgrade (happened to my brother's macbook when mavericks comes out)I'll probably just be doing an upgrade. I don't really want to go to the effort of doing a clean install when it's not really necessary.
That is what I normally do. It is amazing how much free space I gain.I always clean install. It's not really required but it's a good opportunity to clean out all the stuff that I don't need anymore
The same exact issues happen with OS X, (and all software).Here’s a list of why I believe an upgrade is a REALLY BAD IDEA.
Some applications don’t work properly after upgrading from earlier versions of Windows.
Not all security settings migrate to the new operating system (requiring you to harden security post installation).
Exploits (i.e. viruses and spyware) migrate with the upgrade.
Upgrading carries forward performance problems that occur due to normal performance degradation.
Confusion due to inconsistent configurations can lead to an increased total cost of ownership.
Upgrading doesn’t take advantage of the opportunity to start fresh with standardized reference configurations.
The upgrade deployment process is significantly more complicated than the wipe-and-load deployment process.
If Yosemite is preferable: backup, then simply upgrade.Upgrade from Mavericks to Yosemite
Some of my friends suggest me of doing a clean install indeed. What's your opinion on this issue?
Nowadays, it's extremely rare for Apple to require or suggest a clean installation.it may take some time to set up your computer after installation. You will have to configure all of your computer settings, install your third-party and iLife applications, and restore your personal files from the backup you made.
Why use this option?
- If you've already backed up your computer, this might be a good choice if you are trying to resolve an existing issue and an Archive and Install installation didn't help.
- This option takes up the least amount of space when the installation is completed.
- This is a good option if you no longer need the information on the computer, and you have another computer that you would like to easily transfer stuff from ("migrate").