If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos. OS X 10.9 Mavericks supersedes OS X 10.8 Mountain Lion and is the first version of OS X to be free. Although it doesn't introduce any revolutionary changes to OS X, it includes some nice features, especially for fans of iOS, Maps and iBooks. Niresh Mavericks: Unfortunately, the standard 'Unibeast' method for installing OS X Mavericks on PCs (which uses an official copy of the Mavericks installer) doesn't work with Virtualbox. Instead, you'll have to pirated 'distros' of Mac OS X such as Niresh, which is now the most popular distro for Mavericks. Download Mac OS X Mavericks 10.9.5 free latest version offline setup for MacBook. Mac OS X Mavericks 10.9.5 is a powerful operating system with a variety of enhancements and a variety of new features that delivers more stability and ultimate level of performance.

OS, O.S., Os, O's, or os may refer to:

Businesses[edit]

• Ordnance Survey, national mapping agency of Great Britain
• Austrian Airlines (IATA code OS based on its original name: Österreichische Luftverkehrs AG)
• O.S. Engines, a Japanese manufacturer of model aircraft engines

Computing[edit]

• Operating system, computer system software that manages the hardware and software of a computer
• OpenStack, a software platform for cloud computing

Entertainment[edit]

• 'Os' (Fringe), an episode of the television show Fringe
• Outlaw Star, a manga and anime series

Os-x-mavericks-10.9-retail-vmware-image

Medicine[edit]

• Oculus sinister, meaning 'left eye' in general ophthalmologic or optometric usage, particularly in eyeglass prescriptions
• Ohtahara syndrome, a brain disorder
• Overall survival rate, a cancer survival statistic
• ostium, in medicine, a mouth or external opening, in particular:
  • external os, the external orifice of the uterus
  • internal os, the internal orifice of the uterus
  • per os, meaning 'ingestion by mouth'
  • os or ostium, the opening of a coronary artery
• Oneiroid syndrome, a dreamlike fantastic delusional state

People[edit]

• Alexander Os (born 1980), a Norwegian biathlete
• Os du Randt (born 1972), a South African rugby player
• Os Guinness (born 1941), an English author and social critic

Places[edit]

Norway[edit]

• Os, Innlandet, a municipality in Innlandet county, Norway
• Os, Hordaland, a former municipality in Hordaland county, Norway
• Os, Østfold, a parish in Rakkestad municipality in Østfold county, Norway
• Os Church, a name for several churches in Norway

Poland[edit]

• Oś, Kluczbork County, a village in Kluczbork County, Opole Voivodeship, Poland
• Osiedle (Os.), a Polish term used for housing subdivisions in Poland

Other places[edit]

• Os, Värnamo, a village in Värnamo Municipality, Småland province, Sweden
• OS, ICAO code for airports in Syria

Religion[edit]

• Ōs, an Old English word denoting a god in Anglo-Saxon paganism, related to æsir
• O.S., Order of Santiago, a Spanish order dedicated to St James the Greater
• O.S., Order of Sikatuna, the national order of diplomatic merit of the Philippines

Science[edit]

• Ocean Science (journal), an oceanographic journal
• Osmium, a chemical element (symbol Os)

Sport[edit]

• Ohio State Buckeyes, a group of collegiate teams representing The Ohio State University
• Os TF, a sports club in Os, Norway
• On-sight climbing, an ascent of a rock climbing route on the first attempt
• Baltimore Orioles, an American baseball team nicknamed 'O's'
• Leyton Orient, an English football (soccer) team nicknamed 'O's

Titles[edit]

• Ordinary seaman, an unlicensed member of the deck department of a merchant ship
• Ordnance sergeant, an enlisted rank in the U.S. and Confederate armies during the American Civil War era
• Old Shirburnian, used by alumni of Sherborne School
• Old Stonyhurst, used by alumni of Stonyhurst College

Other uses[edit]

• Ōs (rune) (ᚩ), a rune of the Anglo-Saxon fuþorc
• Old Style (O.S.) date, indicating use of an earlier calendar (in Anglophone countries, the Julian Calendar), as opposed to 'N.S.' (new style), usually indicating use of the Gregorian Calendar
• Ossetic language (ISO 639-1 abbreviation OS)
• Object sexuality, sexual attraction to inanimate objects

See also[edit]

Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by some product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

Os 10 Mavericks

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.

Which macOS version is the latest?

Os X Mavericks Virtualbox Windows 10

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Big Sur. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.