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Apple releases OS X Mountain Lion Developer Preview 2

post #1 of 25
Thread Starter 
Apple has released to developers its second developer preview of OS X Mountain Lion, one month after making the initial build available.

In the last four weeks, Apple has focused on readying a series of new or enhanced features in its desktop operating system, ranging from the entirely new Game Center to tweaks such as the move of Notes from Mail into a standalone app of its own, mirroring how notes are handled on iOS.

Apple warns that some features in the new DP2 build, referred to as 4F134, such as Screen Sharing, have changed enough during development to make VNC remote screen sharing sessions currently incompatible with earlier versions of OS X.




A variety of other OS X Mountain Lion features have been enhanced or built upon, including support for 64-bit software.

The new version of OS X now requires a 64-bit kernel, something that will require kernel extensions (including many device drivers) to support 64-bit operation.

The new release will also be restricted to running on machines that support running a 64-bit kernel, including, minimally:

\tiMac (mid 2007 or later)
\tMacBook (13-inch Aluminum, 2008), (13-inch, Early 2009 or later)
\tMacBook Pro (13-inch, Mid-2009 or later), (15-inch, 2.4/2.2 GHz), (17-inch, Late 2007 or later)
\tMacBook Air (Late 2008 or later)
\tMac Mini (Early 2009 or later)
\tMac Pro (Early 2008 or later)
\tXserve (Early 2009)

[ View article on AppleInsider ]
post #2 of 25
The last white imac's c2d doesn't support running a 64bit kernel? Sounds strange...
post #3 of 25
Quote:
Originally Posted by myapplelove View Post

The last white imac's c2d doesn't support running a 64bit kernel? Sounds strange...

It's not just about the CPU. The whole motherboard chipset has to support booting a 64bit OS.
it's = it is / it has, its = belonging to it.
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it's = it is / it has, its = belonging to it.
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post #4 of 25
Quote:
Originally Posted by Mr. H View Post

It's not just about the CPU. The whole motherboard chipset has to support booting a 64bit OS.

Got it. Thanks!
post #5 of 25
Quote:
Originally Posted by myapplelove View Post

The last white imac's c2d doesn't support running a 64bit kernel? Sounds strange...

I seem to remember that there was something about the chipsets that were being used in the c2d machines that prevented a 64bit kernel. Maybe they only supported 32-bit physical addressing in supervisor mode or something? I'm sure it's out there, but google is failing me at the moment.
post #6 of 25
My MBP really likes Lion so I'm hoping Mountain Lion goes in the right direction. I like what has been revealed so far.
post #7 of 25
Quote:
Originally Posted by myapplelove View Post

The last white imac's c2d doesn't support running a 64bit kernel? Sounds strange...

Those 2006 17", 20" and 24" iMac srange from using Intel GMA 950, ATI Radeon X1600, NVIDIA GeForce 7300 GT, and NVIDIA GeForce 7600 GT. These would need 64-bit drivers/kexts to work. At least two are definitely 32-bit.

One can check to see if they kernel ca run in 64-bit with Startup Mode Selector.

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

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"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

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post #8 of 25
Quote:
Originally Posted by jukes View Post

I seem to remember that there was something about the chipsets that were being used in the c2d machines that prevented a 64bit kernel. Maybe they only supported 32-bit physical addressing in supervisor mode or something? I'm sure it's out there, but google is failing me at the moment.

All drivers/kexts have to be 64-bit to use the 64-biit kernel.

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply
post #9 of 25
Thats the grip about the first and second gen Mac Pros, versions 1,1 and 1,2. They will both support firmware upgrades that would let them boot in full 64 bit mode. The only thing holding them back is apple writing a firmware update and a 64 bit kernel version for them.
The Dev forums are full of developers wondering why they don't.
post #10 of 25
Quote:
Originally Posted by Mechanic View Post

Thats the grip about the first and second gen Mac Pros, versions 1,1 and 1,2. They will both support firmware upgrades that would let them boot in full 64 bit mode. The only thing holding them back is apple writing a firmware update and a 64 bit kernel version for them.
The Dev forums are full of developers wondering why they don't.

Get a grip. You're talking about a 2006 model Mac Pro. Enjoy until the power supply burns out and invest in a newer system.
post #11 of 25
Quote:
Originally Posted by mdriftmeyer View Post

Get a grip. You're talking about a 2006 model Mac Pro. Enjoy until the power supply burns out and invest in a newer system.

That Pro machine will probably run 20 years. It is not going to burn up anytime soon.

Life is too short to drink bad coffee.

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Life is too short to drink bad coffee.

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post #12 of 25
Quote:
Originally Posted by SolipsismX View Post

Those 2006 17", 20" and 24" iMac srange from using Intel GMA 950, ATI Radeon X1600, NVIDIA GeForce 7300 GT, and NVIDIA GeForce 7600 GT. These would need 64-bit drivers/kexts to work. At least two are definitely 32-bit.

One can check to see if they kernel ca run in 64-bit with Startup Mode Selector.

Cool, thanks.
post #13 of 25
So, does AirPlay Mirroring now work with the latest release version iOS 5.1 (9B179b) on Apple TV, or does it still require an older beta?!

Does AirPlay Mirroring work on a mid-2009 17" MBP?

TIA!
post #14 of 25
Apple, please don't make screen sharing incompatible with earlier versions. Screen sharing through iChat is a godsend for anyone who has to remotely troubleshoot their relatives' computers, many of which can not be upgraded to Mountain Lion.
post #15 of 25
Now it asks you if you want to allow an app to access your contacts. It's about time this is being addressed in a desktop OS but is it enough? How much freedom do apps have to peruse your user folders?

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply
post #16 of 25
Quote:
Originally Posted by SolipsismX View Post

Now it asks you if you want to allow an app to access your contacts. It's about time this is being addressed in a desktop OS but is it enough? How much freedom do apps have to peruse your user folders?

Apple should buy Little Snitch and incorporate it into OS X and a light version into iOS.

Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
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Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
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post #17 of 25
UAC is coming.
post #18 of 25
Quote:
Originally Posted by Loptimist View Post

UAC is coming.

And the FUD is already here. Get over it.

Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
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Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
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post #19 of 25
Quote:
Originally Posted by Loptimist View Post

UAC is coming.

UAC is a joke. What Apple is doing is nothing like UAC.

Which of us is the fisherman and which the trout?

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Which of us is the fisherman and which the trout?

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post #20 of 25
Has anyone been able to get iCloud Safari Tabs working? Could someone explain how this feature could be useful?


Quote:
Originally Posted by Tallest Skil View Post

Apple should buy Little Snitch and incorporate it into OS X and a light version into iOS.

I don't think that's something Apple would do for two reasons. One, I don't think there is any IP that would needed to mirror what Little Snitch does that Apple doesn't already possess. Two, while for you and I seeing all the different incoming and outgoing connections is useful most won't understand them so this would just complicate Apple's user friendly design.

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply
post #21 of 25
Quote:
Originally Posted by SolipsismX View Post

Two, while for you and I seeing all the different incoming and outgoing connections is useful most won't understand them so this would just complicate Apple's user friendly design.

That's not what I mean. It obviously wouldn't show everything to everyone or even everything to anyone, but it would be able to show, trap, and block stuff that you designateEVERYTHING you designateusing preset choices in System Preferences or more customized additions like Apple often has to their preference panes.

Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
Reply

Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
Reply
post #22 of 25
Quote:
Originally Posted by Tallest Skil View Post

That's not what I mean. It obviously wouldn't show everything to everyone or even everything to anyone, but it would be able to show, trap, and block stuff that you designateEVERYTHING you designateusing preset choices in System Preferences or more customized additions like Apple often has to their preference panes.

Apple's security interface is very weak and could use a major overhaul but I don't think Little Snitch is the answer.

Actually, I would like to see the System Preferences app to follow the way Settings is down on the iPad.

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply
post #23 of 25
Quote:
Originally Posted by SolipsismX View Post

Actually, I would like to see the System Preferences app to follow the way Settings is down on the iPad.

Yep, that would be quite interesting. As I was installing Windows 8 CP just today, I thought that it's funny that there's still a "Startup Disk" option that gets its own icon on the main screen of System Preferences.

Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
Reply

Originally posted by Marvin

Even if [the 5.5” iPhone exists], it doesn’t deserve to.
Reply
post #24 of 25
Quote:
Originally Posted by Tallest Skil View Post

Yep, that would be quite interesting. As I was installing Windows 8 CP just today, I thought that it's funny that there's still a "Startup Disk" option that gets its own icon on the main screen of System Preferences.

I'd also like a well defined distinction between System Preference options that alter the entire OS and those that only alter it for that particular user. On top of that, I hate that Safari, Mail, Messages, and at least one more app are the way you alter the defaults app. I think this should be a drop down in System Preferences the way there default actions for CD & DVDs.

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply

"The real haunted empire?  It's the New York Times." ~SockRolid

"There is no rule that says the best phones must have the largest screen." ~RoundaboutNow

Reply
post #25 of 25
Has the Finder been fixed to so it remembers view settings for individual folders? This has been an issue since Mac OS 10.5:

http://arstechnica.com/apple/reviews...-x-10-5.ars/12

See the video labeled "Finder global view style".
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