Mac OS X is the most successful PC operating system in history. A bold claim, but read on to find out why.
Success for some pundits is expressed by quantity - the number of software licences sold, the size of the installed customer base, the extent of the monoculture monopoly.
We’re not talking about quantity though. Mac OS X has been the most successful OS as it has the highest standards of consistency, of attention to detail in the user interface and in its usability. It’s the safest, most steady and reliable computer platform for everyman, and arguably the easiest for real people to use.
The only computer operating system that’s proven more successful by this metric, even more intuitive, is one also devised by Apple, and that’s iOS – the system that fuels tens of millions of iPhones, iPods and iPads across the globe.
Which is perhaps why Apple has chosen to morph some of the mobile system’s features and interface elements into OS X. And that is ‘OS X’ now rather than ‘Mac OS X’, for with this release, we see the end of Mac OS X as a name, and the beginning of OS X – minus the ‘Mac’.
First impressions – changes to the interface
The first thing you may notice on a Mac laptop when moving to Lion from earlier versions of Mac OS X — and any other OS for that matter — is that scrolling now works backwards.
Instead of using the paradigm of using two-fingers to pick up a window’s scroll bar to drag up and down, you’re now resting your fingers on a page in a virtual way, and sliding that page up and down as if your fingers were physically touching it.

Natural scrolling is introduced with OS X Lion, taking its cue from the iPhone and iPad
Some users have found this disconcerting at first, but after a few hours’ use, we found it awkward to return to the old scroll style. Apple calls it natural scrolling, and that’s how it now feels. It’s switchable from the Scroll & Zoom tab of Trackpad preferences, but we feel it’s worth perservering with if at first it seems ‘wrong’.
There’s also an element of bounce when your scrolling hits the end stops, just as in iOS. This depends on the app you’re using at the moment: some native Apple apps such as Safari show this bounce behaviour, while others like iTunes and Firefox do not.
Also not consistent across the board right now is the full-screen experience. We found that Safari, Preview, Terminal and QuickTime can be expanded to smoothly fill the entire display, after clicking a diagonal-arrow icon that appears in specific programs’ top-right corners.
Full-screen apps may sound like a tumble back to Windows 95, but it’s a great facility for removing all distractions while making the most of available screen space, as we’ve become used to in Apple’s own word processor app, Pages, which had a similar function — ‘had’ being the operative word here as it’s now strangely disabled in Lion, perchance awaiting an update in iWork ’11.
Unlike the old Windows full-screen modus operandi though, it’s very simple to see what’s also going on on your Mac, by sliding back to the main desktop with a three-finger flick to the right.
Mission Control
In Lion, OS X’s virtual desktop system (‘Spaces’) and the window-layering Exposé feature have been mashed up together into something called Mission Control. This simplifies the many options available with the two former systems, at the expense of some loss of control and readability.
For example, we would set Spaces as a two-by-two grid of four virtual desktops, viewable in birds-eye view as such from a mouse hot corner; and this view would show at decent size what’s going on in each Space. And from here, it’s a doddle to slide any open app window to another desktop.

Spaces meets Exposé in OS X Lion's Mission Control
Mission Control now runs thumbnails of each virtual desktop across the screen top when activated, but each at just a fraction of normal size. You can have up to 16 such spaces ready for use, yet even with only four set up, it’s difficult to see quite so clearly what’s happening on each.
More annoying though, you cannot pick up a window from another desktop and move it at will, until you switch to that space first. And windows currently minimised to the Dock are now longer exposed for browsing under Mission Control. Exposé’s show desktop is still available from the thumb-and-three-finger gesture, via a new three-fingers-and-thumb ioutward pinch gesture on the trackpad.
A very neat touch is that you can customise each desktop with its own wallpaper, a long-overdue touch. Even more welcome though, may be the final introduction of Finder window resizing from any corner and any window edge.
Dashboard and its manifold little widgets remains, and can be found one screen to the left of the main desktop.
Scrollbars are now transparent by default — until you start to scroll by trackpad or mouse anyway — which has the advantage of tidying the interface, if making it impossible to see how far you are down a long document or webpage, until you start to scroll the page again. You can deselect this invisibility option in the General pane of System Preferences.
Perhaps the biggest gotcha also inherited from iOS is the restoration of windows and open apps when restarting the computer or logging back into a new session. When we restart a computer, we expect a clean slate of operation, save those programs we choose to auto-launch on startup.
Now, Lion will always re-open any previously opened apps on startup, along with documents you previously had open too. The latter can be prevented by deselecting ‘Restore windows’ from the General pane of System Preferences, but we really need an option to return to classic tabula-rosa computing as an option too.
Launchpad
A retro ‘50s rocket symbolises Launchpad in the Dock, a new way to overview all installed applications on the computer, then pick one to launch. Also available from a three-fingers-and-thumb inward pinch gesture, Launchpad strongly echoes nothing less than an iPhone or iPad’s home screen. You can even rearrange them to taste like in iOS.

Find any app with ease with OS X Lion's Launchpad
Anglophones will be pleased to see that all-American Apple has finally included a British English dictionary and thesaurus in the system’s Dictionary application, courtesy of the Oxford English Dictionary.
iCal and Address Book get a twee iOS-like leather-bound desk accessory look. In the case of iCal especially, this can slow down productivity, since you must wait for each page leaf to slowly turn when you want to flick through pages of the calendar. You can return to the faster instant-flick browsing, but only after holding down the Alt key.
In another small step backward in usability, the colours of icons in the Finder sidebar windows have been removed. Where once were easily recognisable shortcuts for USB drives and FireWire disks (orange icon), Windows and UNIX sharepoints (Blue screen-of-death icon), along with coloured symbols for Applications, Documents and so on, we now have uncoloured grey outlines. This brings the Finder in line with the last update to iTunes, but that doesn’t stop us finding rapid folder and drive identification that much harder.
Other minor tweaks to the Finder include smaller ‘traffic light’ red/yellow/green buttons for close/minimise/maximise, and a default view in new Finder windows that shows ‘All My Files‘ — a multi-tiered Cover View-like graphical overview of, almost literally, all the files on your computer.

The Finder file browser in OS X Lion has been simplified, and has a more monochrome look
In a bid to simplify the Finder interface and take the user further away from any confusing system files, the Macintosh HD shortcut no longer appears in the Finder sidebar; and a user’s own Library directory is now invisible. You can temporarily summon it up easily enough though, using the Shift-Command-G shortcut, then typing in ~/Library.
Overall speed of a Mac running Lion feels subjectively snappier than Snow Leopard. It’s a trend that’s been continuing with almost every feline update since 2001, only we’d wager more noticeably so with the transistion from 106 to 10.7. That could be down even more trimming and optimisation at a low level of the operating system. There have been some significant changes under the bonnet.
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Comments
Guidois said: Im a unhappy power user without giving an elaborate description of all the irritations Lion seems to be less stable Overall I think it just sucks id say un-appleish seems someone was unable to give it a final approval hmmm Is this going to be the future
PMG said: If you want to do things the way an ipad or iphone works then buy an ipad or iphone Lion is rubbish who needs launch pad when all your apps are already in one folder and only one click away Did it ever bother which way you swiped to scroll the screen trying to emulate touching the screen with the track pad is stupid Ical - takes ages to do its animated page turn and couldnt find a way to turn it off Why is the Library folder not shown in FinderApple are becoming complacent I went into the New York store to ask how to remove Lion and the Guy I spoke to said it was not his field and to phone Apple care Not so long ago an apple employee would have taken the time to find the answer I think Apple are arrogant now because of the success of iphonepadWasted two days on Lion - One day installing it and one day wiping it off and reinstalling Snow LeopardDont bother with this tarted up useless version of OSX
Ake Asson said: Not to mention that the printer stopped working
Jordan M. Badangayon said: thats it im moving to ubuntu
Jase Wolf said: Downloaded friday night whilst I slept and woke up to find that it was waiting there for me to say continue and 15 minutes later when installed what are my first imprssions FANTASTIC am so glad paid 21 for so much ok maybe it is just a few new updates but you get so much for what you payI am not needing to worry about compatibility so far as everything seems good just needed to download a new parallels on top of previous to get it workingNow my question with a new OS upgrade is How would I benefit from the upgrade What really is worth the upgrade and the thing that makes it such a special upgrade for me is the abiity of making most things full screen in which you just 2 finger swipe between workspaces I find it so useful opening all programs at their closed down state when you boot upSo it is just like hibernation but better and there is no reason to complain about that as there is an option for Un-ticking startup of closed down programs So I will have to experiment if they automatically reopen if have interrupted power and see if a pages document is recoveredI love being able to swipe from a dvdvideo that is playing full screen to my mail to see whats up all whilst still having dvdvideo still full screen I love launchpad such an easier way to organise and find apps than stacks were and windows start menu isI do like how windows 8 is going to have its new start screen which will replace the start menu and most other parts of UI but I think that it mousetrackpadwould work so much better if they were like how apple makes them and if Microsoft supported it but nope all windows is about is keyboard shortcuts and just standard mice and now our fingers This is not a fantastic way to go unless you are glued to the keyboard Even when I am I still cannot live without all the swipes and flicks of the mouseThe mission control feature is such a clever idea and I would be very likely to use it a lot when I am doing stuff for college and when I have started programming but as I do not have many things open in the same workspace at the moment I have not really used itI love how safaris turning backforward the page works so much quicker than safari on snow leopard with the 2 finger flickMe being able to do all this stuff makes everyday such a pleasure when I come onto my MacI would rate this 10 out of 10 I would not dream of using any other Os as main one or Pc for main computer
Lochinvar said: lot of readies for a very very poor update dont know what OS your review was commenting on or was it the rose tinted glasses that you were wearing
Jase Wolf said: Seems quicker for me and hasnt done it yet but SnowLeopard a number of times would restart rather than shut down
Asep said: Really made slow the system After installed the shutdown takes loong time I want my money back and install back the SL
jbradley234 said: Another thoughthave you tried to open Ableton Live in 32 bit modeI am seeing common trends across various websites where people have found that their software did not work in Lion when opening in 64 bit but have in 32 again a pain but that sounds like it could be your work around
jbradley234 said: I use Steinberg Cubase Essentials 5 and some other VST software to work with Cubase if you use any Steinberg kit then you may find this usefulhttpswwwsteinbergnetensAbleton may have a similar feed on their website but to be honest it sounds like a lot of Audio Software users are going to have to wait for some time before this update is of any use to them
Nothappy said: Found 4 major problems in Lion so far1 Cannot disable old filevault2 Cannot login after backup and restore with Time Machine3 Cannot make clean install of Lion from boot menu4 Many problems with Adobe and MS Office programs
Bob Shark said: Ableton Live is not supported and even the majority of Avid M Audio software hardware definitely the worst update ever
Alan Major3 said: Since I installed it I cannot connect to the Internet Contacted Apple help who were unable to help me told me to re install it but I cant as I cannot as I have said I cant connect to the Internet any more I have also got the latest 27 I Mac
Guest said: Smooth and perfect good job Apple
Carsten said: This is the poorest update experience I have ever experienced from Apple A number of applications are now not functioning as Apple has apparently not bothered to include their partners in securing compatibility from day one Also I find the entire Mac to be slower now - feels like the windows experience of the ever more cluttered computer Really annoying is that the installation removed a number of programs running under parallels without warning Launchpad had 5 pages at first - but a little later it was reduced to just 3 pages because a number of applications were gone I still do not know which ones I lost Worst of all is that the system applications now does not work - I had more than 10 crashing applications ending with send information to Apple Come on - this is really not good enough Apple
Zonda said: Stop comparing with other operating systems and take a hounest look at things that are good and things that arent
Jeff said: I really dont like Mission Control I dislike it that much that Ive sent Steve an e-mailhttptinyurlcom3egrlw8
a Martin said: That opposite can be said about other operating systems that doesnt allow you to change TO a monochrome look And it is possible to change the icons in Finder at least the easiest way might be CandyBar which cost a little money but it might be worth it for the convenience
James said: I find the monochrome look - and not being able to change that - inexcusable
Jase Wolf said: I will be downloading on saturday when we have cheap electric as will take likely about 67 hours I am guessingWe are on evening and weekend with Southern ElectricI think Southern Electric is what council useI cannot wait to get my fingers onto itabout te Notes in mail I sure find them annoying in my mail app when I just want them in my iPod touch notes app