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
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 couldn't find a way to turn it off. Why is the Library folder not shown in Finder?Apple 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 iphone/pad.Wasted two days on Lion - One day installing it and one day wiping it off and reinstalling Snow Leopard.Dont bother with this tarted up useless version of OSX!!!
Ake Asson said: Not to mention that the printer stopped working.
Isbyrne said: I totally agree with most comments here, Lion is rubbish and I have now downgraded back to SL until Apple manages to fix Lion
meeseel said: Absolute RUBBISH!Battery completely trashed after Lion download.Suggest Apple sorts this out ASAP before what is left of their reputation is lost!!!!!
Matt Egan said: Thanks Toby. Lovely contribution.
Toby Esterhase said: barf
Toby Esterhase said: A total dog-- i loved SL but this thing is junk--- a true ripoff of 30 bucks-- dont get it wait for 10.7.5
John Whitehead said: This update in general is pretty poor - it strikes me that they released it to a date rather than to a functional test acceptance sheet. New Safari runs like a dog in full screen mode and causes all sorts of hanging issues, and full screen apps that only support the primary monitor - remind me - why did I shell out for a 30" cinema screen to plug into my macbook pro?All in all a bit of a disaster - I've had to bin safari in favor of firefox until such time as they fix the stability issues.Generally speaking the system is slower than before - so I can only presume the reviewer never really used the system either before or after, but instead added a bit of waffle to the press release from Apple.
Macaddict said: At only £20.99 there is no hesitationdirect link http://bit.ly/os-x-lion-gb
Jordan M. Badangayon said: that's it... i'm moving to ubuntu...
Jwarn 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 pay.I 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 working.Now 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 up.So 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 recovered.I love being able to swipe from a dvd/video that is playing full screen to my mail to see whats up, all whilst still having dvd/video still full screen, I love launchpad, such an easier way to organise and find apps than stacks were and windows start menu is. I 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 mouse/trackpad would 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 mouse.The 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 it.I love how safari's turning back/forward the page works, so much quicker than safari on snow leopard with the 2 finger flick.Me being able to do all this stuff makes everyday such a pleasure when I come onto my Mac.I 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 don't know what OS your review was commenting on? or was it the rose tinted glasses that you were wearing!!
Jwarn said: Seems quicker for me, and hasn't done it yet, but Snow Leopard 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 thought...have you tried to open Ableton Live in 32 bit mode?I 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 useful!https://www.steinberg.net/en/s...Ableton 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 far.1: Cannot disable old filevault.2: Cannot login after backup and restore with Time Machine.3: Cannot make clean install of Lion from boot menu.4: 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 can't as I cannot as I have said I can't connect to the Internet any more . I have also got the latest 27" I Mac.
Guest said: Smooth and perfect! good job Apple.