Mac Os Catalina Macbook Air Early 2015

Apple MacBook Air MJVM2LL/A 11.6-Inch laptop(1.6 GHz Intel i5, 128 GB SSD, Integrated Intel HD Graphics 6000, Mac OS X Yosemite (Renewed) 4.4 out of 5 stars 2,237 $417.03 $ 417. If you're using one of these computers with OS X Mavericks or later, you can install macOS Catalina.Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier. List of Apple computers compatible with macOS Catalina. MacBook (Early 2015 or later) MacBook Air (Mid 2012 or later) MacBook Pro (Mid 2012 or later) Mac mini (Late 2012 or later) iMac models (Late 2012 or later) iMac Pro (All models) Mac Pro (Late 2013) macOS 10.14 Mojave. Release date: September 24, 2018.

7 46 likes 224,622 views Last modified Mar 3, 2021 4:47 PM

This tip replaces version 2126 originally released on the Discussions Feedback forum.

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support. MacBook 8,x - the oldest that can run Mac OS 10.14 with this model name after installing 10.11 or later. MacBook Pro 11,4 and 11,5; October 22, 2013 will only run 10.9 or later (10.9 is only available for Macs that shipped with it). Macbook Pro 11,1 through 11,3; Mac Pro 6,x; MacBook Air Early 2014; Mac Mini 6,x; iMac 14,4.

Find the serial number on:

Plug your serial number in at this link:

Do not use third party links as they may not be secure.

Do not post the serial number on this board, as that is your key to any support you may have left.

Use this tip also to help figure out which portion of the Support Community to post in, as this tip explains:

When you have no serial number, use one of these third party sites to find your model, production year, time in year

(early, middle, late, summer, fall, winter, spring):

Note:

PowerMac, PowerPC, eMac, iMac PPC, iBook (Apple recycled the name iBook for its eBook application on new Macs and iOS devices), Powerbook, Classic all refer to Macs that are older than the present series

Is macos catalina good for macbook air 2015

of Macs. Posting in those forums about a current Mac, shows you have not researched your Mac sufficiently to get a succinct answer to your query. Apple menu -> About This Mac will tell you the Mac OS version or System version you are running. The X in the version is important, and so is the preceding 10 in the version if it exists.

Questions saying X.1 could refer to Mac OS X 10.13.1, 10.1. Don't truncate the version you see.

There are no iOS forums specific to the operating system found on iPads, iPod Touch, AppleTV, Apple Watch, and iPhones. Figure out the type of portable device you are running to ask a question about that device specifically.

Apple has these identifying articles as well:

http://support.apple.com/kb/ht3255 - MacBook Air

http://support.apple.com/kb/ht1635 - MacBook

http://support.apple.com/kb/ht4132 - MacBook Pro

http://support.apple.com/kb/ht3476 - Mac Mini

http://support.apple.com/kb/HT6069 - Mac Pro

http://support.apple.com/kb/ht1758 - iMac
http://support.apple.com/kb/sp96 and http://support.apple.com/kb/sp37 - PowerMac G5

http://support.apple.com/kb/TA25585 and http://support.apple.com/kb/ht3082 - PowerMac G4

http://support.apple.com/kb/TA22033 - PowerMac G3

http://support.apple.com/kb/ht3065 - Powerbook G4

http://support.apple.com/kb/ht2395 - eMac

http://support.apple.com/kb/ht2287 - Powerbook G3

http://support.apple.com/kb/ht1772 - iBook

Macs generally will not run an older Mac OS X operating system than shipped with them.

The one exception is virtualizing 10.6 Server on 10.7 or later, which is described later.

Also important to note is that the Apple App Store only has 10.7, 10.8, and 10.12, except for those who purchased in between systems, and have a Mac that shipped with in between systems. For all others if you need an in between system, and your Mac is older, contact the App Store tech support.

A quick upgrade guide has been posted on

These dates are important for recognizing what Mac OS X will run on Macs. Macs released on or after (including their model #s or name

where known):

September 30, 2018 will only run 10.14 or later

• MacBook Air 8,x

• Mac Mini 8,x

September 25, 2017 will only run 10.13 or later.

iMac Pro 1,1
MacBook Pro 15,x (2018 model)

June 5, 2017 Mac models (all 2017 Models except iMac Pro) will only run 10.12.5 or later

• MacBook Pro 14,x

• MacBook Air 7,2

• MacBook 10,1

• iMac 18,x

September 20, 2016 will only run 10.12 or later.

MacBook Pro with touchbar (instead of physical F keys)
MacBook Pro 13,x
iMac 18,x
MacBook Air 7,2 see this article on which ones could only run 10.12 or later.

September 30, 2015 will only run 10.11 or later. These Macs are the first Macs that can be upgraded directly to

Mac OS 10.14 without installing any other software.

iMac 16,x and 17,x
Macbook 9,x (these Macbooks came with the USB-C, instead of the USB 2 or USB 3 connector. USB 3 and 2 look identical on the outside, use System Profiler to determine which you have)

October 16, 2014 will only run 10.10 or later (10.10 is only available for Macs that shipped with it).

MacBook Air 7,1 and 7,2 (some models could only run 10.12 or later).
Mac Mini 7,x
iMac MF885LL/A came with 10.10.2. All other 15,x came with 10.10.0
MacBook 8,x - the oldest that can run Mac OS 10.14 with this model name after installing 10.11 or later.
MacBook Pro 11,4 and 11,5

October 22, 2013 will only run 10.9 or later (10.9 is only available for Macs that shipped with it).

Macbook Pro 11,1 through 11,3
Mac Pro 6,x
MacBook Air Early 2014
Mac Mini 6,x
iMac 14,4

June 25, 2012 will only run 10.8 or later. 10.8 through 10.11 are supported by these Macs [indicate machine ID found in profiler], and newer models may run some variety of 10.9, 10.10, or 10.11):

MacBook Pro with Retina EMC 2557 from 2012 and 2013 and later models.
MacBook Air (2013 or newer) [6,1]
MacBook Air (Mid 2013 or newer) [6,1]
Mac mini (Late 2012 or newer) [6,1] - the oldest that can run 10.14 after installing 10.11 or later.
iMac (Late 2012 or newer) [13,1]
Mac Pro (Late 2013) [6,1]

These models above are the first models that can be upgraded directly to High Sierra 10.13 without other prior upgrades.

The oldest MacBook Air and iMac that can run Mac OS 10.14 after installing 10.11.

• MacBook Air 5,1

• iMac 12,1

These Macs which are older can also be upgraded to 10.12 by upgrading to 10.7.5 first, and 10.13 by upgrading to 10.8 first:

MacBook (Late 2009 or newer) 6,1
MacBook Pro (Mid 2010 or newer) 6,1
MacBook Air (Late 2010 or newer) 3,1.
Mac mini (Mid 2010 or newer) 4,1
iMac (Late 2009 or newer) 10,1
Mac Pro (Mid 2010 or newer) 5,1

The Macs are compatible with 10.8 and later from prior 10.8's release

Mac Pro (Early 2008 with AirPort Extreme card, or Mid 2012) [3,1]-[5,1] (Earlier Mac Pros are discussed on the 10.8 upgrade tip).
MacBook Late 2008 [5,1] to mid 2010 [7,1] with no Pro or Air in the name.
iMac (Early 2009 to mid-2011) [9,1] to [12,1]
Mac mini (Mid 2010 to mid 2011) [4,1] to [5.1]
MacBook Air (Late 2010 to mid-2012 [3,1]-[5,2]
MacBook Pro Late 2008 [5,1] to Retina 2012 that are not EMC 2557.

July 20, 2011 will only run 10.7 or later. The model IDs (x,x) and EMC that fit this description until June 25, 2012 release of 10.8 (excluding the ones which will run only 10.8 or later earlier mentioned) :

iMac of an EMC of 2496; 13,x and later.

Mac Mini 5,x and later.

Macbook Air 4,x and later.

MacBook 8,x and later (no Pro no Air in the name)

Mac Pro 5,1 with EMC 2629 - the oldest that can be have Mac OS 10.14 installed after installing 10.11 or later, those without that EMC number came with 10.6 and can also be updated to 10.14 the same manner; 6,x and later.

MacBook Pro with EMC 2555, 2563; 9,x and later.

Note all the Macs that can only run 10.7 and later, may be able to run 10.6 Server with Parallels, if you need compatibility with an older operating system:

Beyond this point Macs released during certain date ranges also have a maximum operating system, and/or

minimum retail operating system and system specific operating system requirement (when I say up to 10.9 that includes all incremental updates):

Note: images shown below for retail operating system are those that have no 'Update, Dropin, or OEM' wording on them.

March 15, 2010-July 19, 2011 will only run prebundled 10.6 installer disc, and not retail, but also able to be upgraded to 10.9. Note this tip

if upgrading to 10.7 or later: https://discussions.apple.com/docs/DOC-6271

August 28, 2009-March 14, 2010 will only 10.6 or later up to 10.9. And will at minimum be able to use

10.6.3 retailto install 10.6. Note this tip if upgrading to 10.7 or later: https://discussions.apple.com/docs/DOC-6271

During 2000 to 2009, the serial number also made it easier to identify the Macs, as the 3rd, 4th, and 5th character of the serial number referred to the week

and year of the shipment date. Thus for serial numbers where x can be any letter or number, xxABCxxxxx serial numbers would refer to an A which is the last digit of the year, and BC=week of the year. xx905xxxx is the fifth week of 2009. You can then use Wikipedia to figure out what date the release was, and if it was after a specific retail release of an operating system to determine which pre bundled disc it came with, and which later retail discs the Mac could work with.

December 15, 2008-August 28, 2009 will only run prebundled 10.5 installer disc, and 10.6 retail https://discussions.apple.com/content/attachment/43236040snow.jpg, and if on https://discussions.apple.com/docs/DOC-3761

will also run up to Mac OS X 10.11 if you follow this tip: https://discussions.apple.com/docs/DOC-6271

October 28, 2007 -December 14, 2008 will at minimum be able to use the 10.5.6 retail, and install up to 10.9 if included on https://discussions.apple.com/docs/DOC-3761 if you follow this tip https://discussions.apple.com/docs/DOC-6271

January 10, 2006-October 27, 2007 will at minimum be able to 10.5 retail, and if

on Which 10.5 systems can upgrade to 10.8 or 10.9?or Are there 10.4 systems that can upgrade to 10.8 or 10.9? are

able to run 10.9. Core2Duo and Xeon can upgrade to a minimum of 10.7.5. Otherwise if they only have a CoreDuo, CoreSolo Intel

processor only be able to upgrade to Mac OS X 10.6.8. G5, G4, and G3 processors are not Intel.

Earlier dates are covered on this tip:Can I download my Mac OS upgrade?

Using the dates from the above documents, and the dates according to Wikipedia when specific retail

operating system systems were released, you can find which retail releases were newer than the Macs and the ones immediately older.

i.e.:

An October 24, 2011 Macbook Pro will only run 10.8 retail, and 10.9 retail downloads, but needs an

AppleCare requested 10.7 installer to install 10.7. An exception exists in 10.6 Server, as indicated here:

A pre-October 26, 2007 MacBook Pro will only run the system specific Mac OS X 10.4 installer

that shipped with it, which can be ordered from AppleCare, or newer retail installer versions

of 10.5, 10.6 compatible with its hardware, and 10.7 if it is at least a Core2Duo.

CoreDuo, nor is CoreSolo is not compatible with 10.7.

For PowerPC Macs, Mac OS X 10.4.11 and earlier offer Classic compatibility, and on certain 2003 and earlier Macs dual booting on Mac OS X 10.5 & Mac OS 9:

No Mac may run an older version of Mac OS 9 than was prebundled with it.

A more precise timeline of Mac OS X follows (in U.S. date notation. Links to relevant articles up to 10.7 are included, as 10.7 drops PowerPC applications on Intel):

4/8/2015 10.10.3 (with supplemental on 4/16/2015)

1/27/2015 10.10.2

11/17/2014 10.10.1

10/16/2014 10.10 Yosemite

9/17/2014 10.9.5

6/30/2014 10.9.4

5/15/2014 10.9.3

2/25/2014 10.9.2

10/22/2013 10.9 (10.9 & 10.9.1 should be skipped due to security issues) Mavericks

10/3/2013 10.8.5 supplemental update

9/25/2013 10.8.4 iMac Late 2013

6/10/2013 10.8.4 MacBook Air mid 2013

6/4/2013 10.8.4

3/14/2013 10.8.3

11/29/2012 10.8.2 Mac MIni Late 2012

10/4/2012 10.8.2 supplemental update

10/4/2012 10.7.5 supplemental update

8/23/2012 10.8.1

7/25/2012 10.8 Mountain Lion

5/9/2012 10.7.4

2/1/2012 10.7.3

10/12/2011 10.7.2

8/16/2011 10.7.1

7/25/2011 10.6.8 v1.1

5/4/2011 10.6.7 Early 2011 MacBook Pro

3/21/2011 10.6.7

1/6/2011 10.6.6

11/10/2010 10.6.5

6/15/2010 10.6.4

4/13/2010 10.6.3 v1.1

4/1/2010 10.6.3 retail installer presently sold at the online Apple Store.

8/28/2009 10.6 retail installer (Snow Leopard)

12/15/2008 10.5.6 retail installer (Last PowerPC installer)

6/30/2008 10.5.4 retail installer

11/15/2007 10.5.1 retail installer

10/26/2007 10.5 retail installer (Leopard)

8/7/2006 Mac Pro (Intel, first Snow Leopard compatible professional desktop) replaces PowerMac G5 (the last PowerPC Mac and Mac capable of running Classic)

5/16/2006 The MacBook replaces the iBook (the last consumer notebook capable of running Classic)

4/3/2006 10.4.6 retail PowerPC only.

2/28/2006 First Intel Mac Mini (not capable of running Classic, first Mac)

1/10/2006 First Intel iMacs, MacBook Pro replaces Powerbook (first Macs not capable of running Classic, first Mac capable of running Snow Leopard)

10/31/2005 10.4.3 retail PowerPC only.

8/9/2004 10.3.5 retail

12/17/2003 10.3.2 retail

12/19/2002 10.2.3

Some hints about operating systems:

- Mac OS X 10.8 or later are required to sync with iOS 9.2 or 9.2.1.

- No PowerPC Mac can run Mac OS X 10.5.8 or higher, or sync with iOS 6 or higher.

- No PowerPC Mac can run Boot Camp

- No Mac can run Classic (side by side Mac OS 9 with Mac OS X without reboot) on the same partition as Mac OS X 10.5 or higher.

- No Intel Mac can run Classic.

- All Intel Macs can run at least Mac OS X 10.6.8 as long as they are older than Mac OS X 10.7's release.

- PowerPC applications need Mac OS X 10.6.8 or earlier to run on Intel Macs.

- Boot Camp needs Mac OS X 10.5 or later on Intel Macs. Note other virtualization tools are available for Mac OS X 10.4.11 or earlier on Intel Macs.

- Mac OS X 10.7.3 is needed for the latest Java and minimum iCloud.

- The same minimum system requirements exist for Mac OS X 10.8, 10.9, 10.10, and 10.11.

- 10.6.6 is the minimum for the Mac App Store, and upgrading to 10.7 without erasing the drive you install 10.7 on if the hardware supports it.

- 10.6.8 is the minimum for 10.8 or later upgrades if the hardware supports it.

- Apple has a 10.6.8 to 10.11 updateon the App Store.

- Some Macs that shipped with 10.6 can install up to 10.12 if they are upgraded to 10.7.5 first.

Which Mac operating system is the best is a topic of numerous debates among Apple fans.

Since the mission of this blog is to refute myths and legends around Macs, it’s time for me to provide my 2 cents about the issue on hand. While everything below is just my opinion, as a long-time Mac user and veteran software engineer, I hope my opinion worth something.

The best Mac OS version is the one that your Mac is eligible to upgrade to. In 2021 it is macOS Big Sur. However, for users that need to run 32-bit apps on Mac, the best macOS is Mojave. Also, older Macs would benefit if upgraded at least to macOS Sierra for which Apple still releases security patches.

How to Tell Which macOS You Are Running

To find out which macOS is currently running on your Mac, follow these steps:

Click on Apple logo in the top left corner of the menubar
In the dropdown click on the first item: About This Mac
The first line in the Overview tab is the name of the current OS.

What Version of OS Can My Mac Run?

Not all Macs can be upgraded to the latest OS version. For instance, old Macs powered by PowerPC CPUs cannot run OS intended for Intel-based computers. Also, some versions have hardware limitations.

For instance, Mojave cannot be installed on MacBook Pro earlier than Mid 2012 model.

Check below to know exactly what version of OS your Mac can run.

Which OS is Best for my Mac

Anytime someone asks me which OS is best for them I always suggested going with the latest. Things have changed recently, however.

Should I Upgrade to macOS Catalina or Big Sur?

While personally I like macOS Big Sur and have it installed on my MacBook Pro, it comes with serious breaking changes.

The first issue is compatibility.

Big Sur is a transition OS which is designed to help Apple to move from Intel processors to their own chips on ARM.

After I installed Big Sur on my MacBook Pro mid 2020 (pre-Silicon), most of my apps, including Microsoft Office, were working as expected.

However, my VMWare Fusion 11 does not start anymore, so I have to purchase a new license if I want to keep using it (or roll back to Catalina). Luckily, I took a full backup before the upgrade.

The second breaking issue is the lack of 32-bit app support.

macOS Catalina and Big Sur can only run 64-bit apps.

If you wondering whether you should upgrade to macOS Catalina or Big Sur, first verify that you don’t have any 32-bit apps. But first, take a back up, so you can go back in case something breaks after the upgrade.

For instance, I had to remove uTorrent after upgrade. And I didn’t know that uTorrent is 32-bit!

How to Know If App is 32-bit or 64-bit

To find out whether the app on your Mac is 32-bit or 64-bit follow these steps:

Click on Apple logo in the top left corner of the Mac screen
Click on About This Mac option
Click on System Report button in Overview tab (first one)
Scroll down to Software -> Applications
Find the app and check Kind

Which macOS Should I Use

If you have an older Mac which is not eligible to upgrade with some latest software or hardware, I’d suggest upgrading at least to Sierra (or better High Sierra) for the following reasons:

Sierra is still supported by Apple, and it gets security updates
APFS file system is available
It supports Siri
Significant security improvements

The most important point when choosing the best OS is the ability to get security updates. While Apple generally does not announce the OS end of life dates, it is possible to know when they stop releasing security updates from this page.

For instance, according to the page, the last security update for OS X Yosemite was released on September 12, 2017. The last update for OS X El Capitan was in July 2018, and Carnegie Mellon University confirmed that El Capitan’s end of life date was August 2018.

Snow Leopard Myth

I know that some users on forums believe that the best OS version for Macs was Snow Leopard. But that is a myth. And I know how such myths get created.

Once I worked in the company, which was selling a 20-year old product. And customers were still using and didn’t want to switch to new versions, because the old one was rock solid.

I then talked to the engineer who worked on the project, and he revealed that the product was a total disaster when it was first deployed. Engineers had to work on-site for almost a year in order to fix all bugs.

After five or so years of polishing the product, it becomes virtually bug-free, and nobody now remembers how bad it was when it was first rolled out. A similar thing happened Snow Leopard, and it was recognized as best mac os version after some time.

How to Update to the Latest Version

There are two ways to update to the latest OS version on Mac:

From the Software Update section in System Preferences
Use a download link

Using Software Update

This is by far the best option, but it only available if you have Yosemite, or later OS installed already. If you enabled automatic updates, then Mac will inform you that the next macOS is available.

Just open System Preferences, go to Software Update and click on the Upgrade Now button.

This method is also best if wondering how to check if you have the latest version of OS installed on your Mac. Only the version compatible with your hardware will appear here.

For instance, my the latest version for Mac Mini 2012 is Mojave, I can’t install anything newer than that.

Using download links

For older systems or in case you need to downgrade, you have to download a standalone installer in DMG format. DMG stands for disk image, similar to ISO, just different formats.

After downloading the installer, just double click on it and follow instructions. Again, do not forget to take a backup before the upgrade.

Mac OS Comparisons: Requirements, Features, Compatibility, Download Links

Following is a high-level description of all Mac operating systems as early as Mountain Lion.

Macbook Air Early 2015 Macos Catalina

You can refer to those descriptions when deciding which operating system is best for your iMac, Mac Pro, Mac mini, or MacBook.

With each OS description, I included a list of Macs supported. However, you can use Mac OS compatibility checker for more detailed information.

macOS 11 Big Sur

macOS v11 (codename Big Sur) is the latest version of the operating system for Apple computers.

Release date: October 13, 2020

Hardware Requirements: RAM requirement 4GB. Big Sur is the first OS to support new Macs using ARM technology (in the future).

Features

The biggest design refresh since macOS X.
Support for new ARM processors.
Safar improved performance and power consumption.
Time Machine supports backup to APFS volumes.
One-click translation for 7 languages.
Redesigned maps

Software Compatibility Issues

Only 64-bit apps are allowed to run on Big Sur.

How to install

There are two ways to install Big Sur: enable automatic updates in System Preferences or download by using the following link.

List of Apple computers compatible with macOS Big Sur

MacBook (2015 and later)
MacBook Air (2013 and later)
MacBook Pro (2013 and later)
Mac mini (2014 and later)
iMac models (2014 and later)
iMac Pro (2017 and later)
Mac Pro (2013 and later)

macOS 10.15 Catalina

Release date: October 7, 2019

Hardware Requirements: RAM requirement increased from 2GB to 4GB.

Features

Introduced Sidecar, which allows for Macs to use an iPad as an external display.
iTunes was replaced by separate apps: Music, Podcasts, and TV.
Find My Mac and Find My Friends have merged into one app.

Software Compatibility Issues

macOS Catalina is the first Mac operating system that does not support 32-bit applications. Only 64-bit apps are allowed to run on Catalina.

How to install

There are two ways to install Catalina: enable automatic updates in System Preferences or download by using the following link.

List of Apple computers compatible with macOS Catalina

MacBook (Early 2015 or later)
MacBook Air (Mid 2012 or later)
MacBook Pro (Mid 2012 or later)
Mac mini (Late 2012 or later)
iMac models (Late 2012 or later)
iMac Pro (All models)
Mac Pro (Late 2013)

macOS 10.14 Mojave

Release date: September 24, 2018

Hardware Requirements: 2GB RAM and 18.5GB free space on disk

Features

The main feature of Mojave is “Dark Mode”
FaceTime adds group feature which allows chatting with up to 32 people
News, Stocks, Voice Memos, and Home apps were ported from iOS to Mac.

How to install

If your Mac is eligible to update to Mojave, then the easiest way to install it is by enabling automatic updates. Downloading a standalone Mojave installer could be a little tricky.

List of Apple computers compatible with macOS Mojave

MacBook (Early 2015 or later)
MacBook Air (Mid 2012 or later)
MacBook Pro (Mid 2012 or later)
Mac mini (Late 2012 or later)
iMac (Late 2012 or later)
iMac Pro (All models)
Mac Pro (Late 2013 and 2010-2012 models with upgraded GPU)

macOS 10.13 High Sierra

Release date: September 25, 2017

Hardware Requirements: 2GB RAM and 14.3GB free space on disk

Features

APFS (Apple File System) becomes the default file system in High Sierra. It’s a significant upgrade from the older HFS+ in terms of speed, size, and security
iCloud support of Messages which allows sync messages of the account across multiple devices
Mail app uses 35% less storage space due to optimizations

List of Apple computers compatible with macOS High Sierra

MacBook (Late 2009 or newer)
MacBook Pro (Mid 2010 or newer)
MacBook Air (Late 2010 or newer)
Mac mini (Mid 2010 or newer)
iMac (Late 2009 or newer)
Mac Pro (Mid 2010 or newer)

How to install

Here is a High Sierra download link.

macOS 10.12 Sierra

This is the first macOS version. Previous OS versions for Macs were called OS X (X stands for 10).

Release date: September 20, 2016

Hardware Requirements: 2GB RAM and 8GB free space on disk

Features

Siri was introduced to Macs
Optimized storage with iCloud sync
Auto-lock feature allows unlocking MacBook with paired Apple Watch
APFS preview available
Disk Utility can manage RAID sets again
Significant security improvements

How to install

Here is a Sierra download link.

List of Apple computers compatible with macOS Sierra

MacBook (Late 2009 or newer)
MacBook Pro (Mid 2010 or newer)
MacBook Air (Late 2010 or newer)
Mac mini (Mid 2010 or newer)
iMac (Late 2009 or newer)
Mac Pro (Mid 2010 or newer)

OS X 10.11 El Capitan

Last OS X version.

Release date: September 30, 2015

Hardware Requirements: 2GB RAM and 8GB free space on disk

Features

System Integrity Protection – a security feature that protects even when the root user executes the process
Performance improvements: open PDF files four times faster, Mail is twice faster, launching apps 40% faster
Notes app similar to the app in iOS

Macs compatible with OS X El Capitan

same as OS Mountain Lion.

How to install

Here is El Capitan download link.

OS X 10.10 Yosemite

Release date: October 16, 2014

Hardware Requirements: 2GB RAM and 8GB free space on disk

Macs compatible with OS X Yosemite

Same as OS Mountain Lion.

Features

Major user design overhaul
Introduction of Handoff and Continuity features
Photos app replaced iPhoto and Aperture

How to install

Here is Yosemite download link.