Apple is scheduled to release the next version of OS X - OS X 10.11 'El Capitan' - later today, which means that you still have time to carry out some last-minute preparations ahead of the upgrade.

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Will your Mac run El Capitan?

Before you go all hog wild excited, first make sure that your Mac can run El Capitan.

The simple rule of thumb is that if you're running OS X 10.9 Mavericks or OS X 10.10 Yosemite then you're good to go, although not all features will be available to those running older hardware. Upgrades to El Capitan are possible from OS X versions going back to Snow Leopard (10.6).

If you're running OS X 10.5 Leopard then you'll have to upgrade to Snow Leopard first via the old-school method of using a DVD. The privilege of upgrading to Snow Leopard just so you can download the free El Capitan upgrade will cost you $20.

Here is a complete list of compatible Macs:

• iMac: Mid 2007 or newer
• MacBook: Aluminum Late 2008 | Early 2009 or newer
• MacBook Air: Late 2008 or newer
• MacBook Pro: 13-inch, Mid 2009 or newer | 15-inch, Mid/Late 2007 or newer | 17-inch, Late 2007 or newer
• Mac Mini: Early 2009 or newer
• Mac Pro: Early 2008 or newer
• Xserve: Early 2009

What about disk space?

You're going to need around 10GB of free space to carry out the upgrade. If you know your way around OS X then you'll know some of the places to look for detritus that you can delete (think the Downloads or MobileSync folders, or that folder on your desktop where you keep all the funny memes and cat videos you've found).

If you're not that familiar with the OS X file system then there are apps that can help you do this, such as DaisyDisk or Clean My Mac.

Upgrade your apps

It's a good idea to upgrade any and all apps (those downloaded from the Mac App Store and those that have come directly from the vendor) that you use before shifting up to El Capitan. But bear a few things in mind:

• Some developers may not have released El Capitan-compatible apps yet, so things that used to work might not work the same once you've upgraded.
• Some apps will require a paid upgrade, so factor that cost into the equation.
• Abandoned apps won't receive upgrades, so if the upgrade to El Capitan breaks something, well, you're then the proud owner of a broken app.

RoaringApps has an excellent resource for checking out application compatibility.

Backup. Backup! BACKUP!!!

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Picture this scenario. You've tried to upgrade your Mac but something catastrophic happened, and now all your data is gone? Would you be sad? Angry? Upset? Paralyzed with fear over everything you've lost?

Well, fear not. Realize that none of this has yet happened and MAKE A BACKUP OF YOUR SYSTEM BEFORE YOU CARRY OUT THE UPGRADE!

Check your system disk

Not really vital but I like to do this for peace of mind because OS upgrades put quite a strain on storage.

To do this go to Applications > Utilities and fire up Disk Utility. Select your startup partition in the left column (located under your storage device's name) and then click Verify Disk.

If you discover any problems then you'd be foolhardy to perform an upgrade before fixing those issues.

Encryption

If you're using any third-party disk encryption software, you'd be wise to disable this before the upgrade, because if things go wrong, you're going to be in a world of pain (and more than likely reaching for that backup you just made).

Same goes for Snow Leopard users with FileVault enabled. Disable this, carry out the upgrade, and then switch to FileVault 2.

Don't rush!

I know that new stuff is cool, and it's doubly cool when it's free, but there's no reason to rush into upgrading to El Capitan.

If your system is critical, then it might be a good idea to hold back on upgrading. After all, it's not like El Capitan is a limited resource. If you don't upgrade today, it'll still be there when you decide you're ready, complete with patches and bug-fixes.

To be honest with you, if my job wasn't partly to feel the pain of newly released stuff so you don't have to, I'd probably give El Capitan a few weeks more to mature before installing it, and I won't install it on my main workhorses until I've seen what mayhem it's going to cause on non-vital 'sacrificial' systems first.

Sometimes you gotta slow down to go fast.

Ready to upgrade?

Hit the Mac App Store, click that button, and wait for the update to roll in.

See also:

Previously most of us know that Mac computers were consider most virus proof operating system without any need of Mac Antivirus. But time has changed, which there are more stronger and viral Mac viruses have been appeared these days until the need of solid protection like Mac Antivirus software is a must software to against these Mac viruses threats.

Most of Mac OS get infected by clicking unknown websites and files to trigger Mac vulnerabilities allow Mac hackers to exploit or done via script injection. Most of Mac threats aren’t after your Mac computer – they’re after your identity and your money.

So, Mac Antivirus Software is consider an essential mac program to avoid or prevent identity theft, file corruption or interception of your credit card details from Mac OS.

Below are free Mac antivirus software or Mac Antivirus Free works on Mac OS X 10.11 (El Capitan), Mac OS X 10.10 (Yosemite), Mac OS X 10.9 (Mavericks), Mac OS X 10.8 (Mountain Lion), Mac OS X 10.7 (Lion), and Mac OS X 10.6 (Snow Leopard).

AVG AntiVirus for Mac – Free Mac Virus and Spyware Protecti

AVG antivirus has been famous for their Windows free antivirus. At now, AVG antivirus also lies on same powerful security protection like Windows version that works in real time to detect and remove Mac viruses and spyware. AVG AntiVirus for Mac is compatible with Mac OS X Mountain Lion or later.

AVG antivirus for mac run quietly on Mac OS background without affecting your mac performance. Plus, this free mac anti virus always up to date on their virus definition against latest mac threat.

Avast Free Mac Security

Avast Free Mac Security is famous free mac antivirus for its excellent malware-detection scores and simple interface. However, the only drawback is they don’t schedule scanning, which Mac user scan their Mac OSX by on demand.

The best part of Avast Free Mac Security is their mac viruses is reaching 100 percent of on-demand malware (detected during an active scan) and 98.9 percent of on-access malware (detected as a file is opened, executed or downloaded). It consider among the best free mac anti virus.

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Their antivirus settings let mac user decide to handle malware files: either moving them to quarantine or deleting them from the system immediately. Mac user can choose whether to scan archival files (ZIP, etc.), which may add a significant amount of time to your scans.

Avast Free Mac security email support is particularly impressive, which it supports all IMAP and POP3 mail clients, including Apple Mail, Thunderbird, Postbox and Airmail.

Avira Free Antivirus for Mac

Avira Free Antivirus for Mac has a simple and modern interface with good mac viruses detection and protection rate. Meanwhile, Avira Free Antivirus for Mac also equipped with standard spyware and adware protection, along with the ability to intercept harmful websites and block tracking, and comes bundled with 5GB of online storage in addition to one-click deletion of malicious files.

ClamXAV 2

ClamXav 2 is a well known anti-virus and malware scanner for Mac OS with the ability to detect both Mac and Windows malware and virus threats.

ClamXav able to scan either the specific Mac files or entire mac hard drive that you want. It run silently in the mac background and monitor your computer and scan any new files as they arrived on your Mac computer. Lastly, ClamXAV 2 also automate scans and database updates to match your scanning schedule.

Malwarebytes Anti-Malware for Mac [ Mac Anti Adware | Antivirus ]

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Malwarebytes Anti Malware for Mac isn’t a heavy run antivirus program able to block those annoying adware and malware. Its technology is custom built to detect and remove adware. It uses a proprietary database that identifies over 160 adware variants.

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However, Malwarebytes anti malware doesn’t offers no real-time protection like Windows PC version

Please share with us if you know any free mac antivirus software should include on the above list.