So finally, Mac OS X 10.11 El Capitan is about to become available. Installing a new OS is perhaps the most intense thing you can do to your beloved mac and it should be done with care and following a few basic rules.
First of all BACKUP!
Make sure you have a sound backup via time machine and I would even go further and make a manual backup of your most important files to an external hard drive (i.e photo library, documents etc).
Space, space and more space.
Secondly, Make sure you have enough space on your hard drive. Typically you should alway be running Mac with at least 10-15% of your hard drive empty. This allows the Mac to utilise that space to aid keeping speed up. El Capitan needs roughly 15-20gb of free space to install.
Maintenance is Key!
Lastly, make sure your Mac is in tip-top condition before embarking on your upgrade adventures. This means clearing the decks of old files, emptying trashes and generally making sure the wild cat is purring before you give it a bath.
The way that we keep on top of maintenance of Macs for our own and for our clients is to use CleanMyMac by a company called MacPaw. This piece of inexpensive software is a marvel indeed. It allows you to scan your Mac for System Junk (Stuff thats left over when you install new software), Empty large caches of data, old iOS updates (which can be huge), unnecessary languages, these take up quite a lot of space. CleanMyMac also has a maintenance mode that will scan the Mac and go through all the protocols to make sure that the mac is functioning exactly as it should.
There are a lot of bogus Mac maintenance apps out there ( lets not even mention the keeper that shall not be named mac) but this one really does find huge amounts of lost space and keeps everything running smoothly. It even monitors your memory usage and allows you to easily check on attached drives via the menu bar.
If you are going to install El Capitan we would highly suggest you investing in CleanMyMac to make sure you start off in the best possible scenario for the massive brain transplant that is a Mac OS update!
Click Here to Visit CleanMyMac