* Complete Guide on How to Upgrade to macOS Sierra

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1. Back up Mac Before El Capitan to Sierra Update

Before you download and upgrade, backing up Mac is the first essential thing to do. Backup helps you get access to all the files, including photos, videos, music etc., and especially useful if any macOS Sierra upgrade problems occur. So, remember to back up Mac before updating to macOS Sierra. You can use Time Machine to backup full Mac file, or iCloud to backup the music, photos, calendars, etc. Or alternatively, simiply backup what you think important and make enough room for macOS Sierra upgrade and download with other tools like MacX MediaTrans.

It will backup your Mac computer file to hard drive, as it turns your iPhone iPad to a flash drive to save and backup all your Mac data, including music, videos, photos, apps, document etc, and restores the backup files to Mac by simply drag and drop.

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Step 1:Free download this Mac backup software and launch it on your computer. Then connect your iPhone to Mac via a USB cable.
Tips: Since the Mac data would be large in size, so make sure your iPhone or iPad iPod has enough storage space to save your Mac files.

Step 2: Click >Flash Drive> icon on the main interface of the Mac backup program.

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Step 3: Click >Add> button to add file or folder into your iPhone. You are allowed to mount iPhone as hard disk drive to store any files backed up from Mac with this iTunes alternative mac: music files, videos, photos, documents, PDF, PPT, RAR, etc. and manage files on iPhone with 'Modify' button. A safe Mac backup will be created in one click for El Capitan to Sierra upgrade.

2. Downloading and Upgrading to macOS Sierra

macOS Sierra will be available for free download on Mac App Store, from where Mac users can download Mac OS X 10.12 Sierra. Now, install and update to Mac OS X. Go to Application folder, open Install Preview file, Continue, Hit >Continue>, and >Agree>, Show all Disks, Highlight the external hard disc, click > Install > on your MacBook Air/Pro or iMac etc.

If you feel it's difficult to understand the tutorial of downloading and upgrading or too much trouble, go to Apple store for help. If you have problems, like macOS 10.12 can't installed on Mac computer, or macOS Sierra stuck installing etc, get the fix below.

3. macOS Sierra Upgrade Hardware Requirements

Not all Mac have the luck to upgrade to macOS Sierra. Read macOS Sierra hardware requirements below to check whether to upgrade or not.

MacBook Pro (2010 and later) MacBook Air (2010 and later)
Mac Mini (2010 and later) Mac Pro (2010 and later)
MacBook (Late 2009 and later) iMac (Late 2009 and later)

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If you don't know if your Mac's compatiblity, you can check the model make and model year by clicking the 'About This Mac' in the upper left corner.