If errors are found, click the Repair disk button. Select the Mac’s disk drive on the left, the boot volume, and click Verify Disk on the right. Go to the Applications/Utilities folder and run Disk Utility.
#HOW TO CLEAN INSTALL MAC OS X YOSEMITE UPGRADE#
Errors creep in over time and you don’t want to upgrade a disk that is full of errors.
The first thing to do before you upgrade is to check that the Mac’s disk drive is OK. It is a fresh start and you can do this with Yosemite too. One of the reasons why a new computer is so much faster and more responsive than an old one is because it does not have all the clutter of years of use. Remove everything from a disk and when you install OS X Yosemite it will be free of the junk that is normally found on old drives and it will run faster and be more reliable. It has been accumulating caches, temporary files, clutter and junk for years and then you want to go and put a brand new operating system on it? Yes, it is possible, but surely a clean start with a freshly formatted disk drive is better. Just think about your disk drive for a minute.
#HOW TO CLEAN INSTALL MAC OS X YOSEMITE DOWNLOAD#
Is it best to upgrade or should you perform a clean install? How do you actually carry out a clean install from the download in the App Store? It is actually quite straightforward, although it does require the use of an external disk, such as a USB drive.
Before you do though, take a minute to consider your options. Just fire up the App Store from the Dock and you can download it free of charge and upgrade your Mac. OS X Yosemite is here and it is in the Mac App Store.
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