Put a check mark in the Automatically hide and show the Dock box if you want the Dock to go away when you're not using it. Remove the check mark if you want the Dock to remain visible all the time. You make it reappear as needed by moving your mouse cursor to the bottom of the screen where the Dock typically resides. If you moved the Dock to the left or right edge of the screen, move the mouse to that side of the screen.
In addition to using the Dock preferences to configure whether the Dock is shown or hidden, you can also control its visibility directly from the keyboard without going to System Preferences.
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The advantage of this method is that you can change the visibility setting instantaneously without bringing up the System Preferences. One last method for changing the visibility setting of the Dock is to use your mouse or trackpad to access a secret menu in the Dock itself. Move the cursor to the Dock separator, that small vertical line that sits between the Dock apps and any folders or documents you installed in the Dock. If the Dock is usually hidden, move the cursor to the Dock area to make the Dock appear, then right-click the Dock separator and select Turn Hiding Off.
You can also use the Dock separator to access any of the Dock settings quickly. Just right-click the Dock separator and select Dock Preferences. If you want to keep the Dock on screen but want it to take up as little space as possible, use the Dock preference pane to control the size and magnification. A computer that is booted into a bit kernel can still run bit applications.
However, it cannot load bit loadable kernel extension kexts on Mac OS X. A driver that interacts with hardware requires a kext and older versions of National Instruments Mac OS X drivers use bit kexts. If you wish to install the drivers older than the versions listed above on a computer that boots a bit kernel by default, you will need to boot the system into bit kernel mode. This can be accomplished by holding down 2 and 3 during boot on computers running Mac OS X The bit kernel is not available with Mac OS X Mac OS X introduced a number of new capabilities to provide a more stable and reliable platform than its predecessor, Mac OS 9.
For example, pre-emptive multitasking and memory protection improved the system's ability to run multiple applications simultaneously without them interrupting or corrupting each other. Many aspects of Mac OS X's architecture are derived from OpenStep, which was designed to be portable, to ease the transition from one platform to another. The most visible change was the Aqua theme. According to John Siracusa, an editor of Ars Technica, the introduction of Aqua and its departure from the then conventional look "hit like a ton of bricks.
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To some extent, Apple has used the successful transition to this new design as leverage, at various times threatening legal action against people who make or distribute software with an interface the company claims is derived from its copyrighted design. Mac OS X Architecture implements a layered framework. Mac OS X includes its own software development tools, most prominently an integrated development environment called Xcode.
For the Apple—Intel transition , it was modified so that developers could build their applications as a universal binary, which provides compatibility with both the Intel-based and PowerPC-based Macintosh lines. In and , two Macworld editors expressed criticism of the permission scheme; Ted Landau called misconfigured permissions "the most common frustration" in Mac OS X,  while Rob Griffiths suggested that some users may even have to reset permissions every day, a process which can take up to 15 minutes.
As of , Mac OS X is the second most popular general-purpose operating system in use for the internet, after Microsoft Windows , with a 4. All of the eighteen user languages for the system menus, messages, and other functions are installed by default and can be chosen from the System Preferences. As of OS Input methods for typing in dozens of scripts can be chosen independently of the system language.
All Mac software that did not receive a complete rewrite to the new framework would run in the equivalent of the Classic environment.
Applications written with Carbon can be executed natively on both systems. Traditionally, Cocoa programs have been mostly written in Objective-C, with Java as an alternative. Projects such as Fink, MacPorts, pkg-src and HomeBrew provide pre-compiled or pre-formatted packages. From version The app, Apple's version of the X Window System graphical interface for Unix applications, as an optional component during installation.
All bundled versions of X11 feature a window manager which is similar to the Mac OS X look-and-feel and has fairly good integration with Mac OS X, also using the native Quartz rendering system.
With the introduction of version Later versions discontinued support for some older hardware; for example, Mac OS X Tools such as XPostFacto and patches applied to the installation disc have been developed by third parties to enable installation of newer versions of Mac OS X on systems not officially supported by Apple. Except for features requiring specific hardware e.
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On June 6, , Steve Jobs confirmed these rumors when he announced in his keynote address at the annual Apple Worldwide Developers Conference that Apple would be making the transition from PowerPC to Intel processors over the following two years, and that Mac OS X would support both platforms during the transition. Jobs also confirmed rumors that Apple had versions of Mac OS X running on Intel processors for most of its developmental life.
Apple had supported the 68K emulator for 11 years but stopped supporting it during the transition to Intel CPUs. Apple dropped support for Classic mode on the new Intel Macs. A new version of Xcode and the underlying command-line compilers support building universal binaries that will run on either architecture.
Apple initially encouraged developers to produce universal binaries with support for both PowerPC and x Plugins for Safari need to be compiled for the same platform as Safari, so when Safari is running on Intel it requires plug-ins that have been compiled as Intel-only or universal binaries, so PowerPC-only plug-ins will not work. Such cross-platform capability already existed in Mac OS X's lineage; Openstep was ported to many architectures, including x86, and Darwin included support for both PowerPC and x Apple stated that Mac OS X would not run on Intel-based personal computers aside from its own, but a hacked version of the OS compatible with conventional x86 hardware was developed by the OSx86 community.
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It was not installed by default, but it was available on the installation DVD as an installable add-on and was installed automatically via the Internet when first attempting to run a PowerPC-based application. Every window element, text, graphic, or widget is drawn on-screen using anti-aliasing DisplayPDF technology.
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New interface elements were integrated, including sheets document model dialog boxes attached to specific windows and drawers. Apple has continued to change aspects of the OS X appearance and design, particularly with tweaks to the appearance of windows and the menu bar. One example of a UI behavioral change is that previewed video and audio files no longer have progress bars in column view; instead, they have mouse-over start and stop buttons as of The human interface guidelines published by Apple for Mac OS X are followed by many applications, giving them consistent user interface and keyboard shortcuts.
The graphics system OpenGL composites windows onto the screen to allow hardware-accelerated drawing. This technology, introduced in OS X In OS X Its functions are to instantly display all open windows as thumbnails for easy navigation to different tasks, display all open windows as thumbnails from the current application, and hide all windows to access the desktop. Features introduced in OS X The operating system then managed conflicting edits and data consistency.
Finder is a file browser allowing quick access to all areas of the computer, which has been modified throughout subsequent releases of Mac OS X. It allows for dynamic previews of files, including videos and multi-page documents, without opening their parent applications. Prior to its release, version After the immense buzz surrounding version Apple has also registered "Lynx" and "Cougar" as trademarks, though these were allowed to lapse. On September 13, , Apple released a "preview" version of Mac OS X internally codenamed Kodiak to the public in order to gain feedback from users.
The initial version was slow, incomplete, and had very few applications available at the time of its launch, mostly from independent developers. While many critics suggested that the operating system was not ready for mainstream adoption, they recognized the importance of its initial launch as a base on which to improve.
Simply releasing Mac OS X was viewed by the Macintosh community as a great accomplishment, for attempts to completely overhaul the Mac OS had been underway since and delayed by countless setbacks. Following some bug fixes, kernel panics became much less frequent. It had better performance and provided missing features, such as DVD playback. Apple released It was discovered that the upgrade CDs were full install CDs that could be used with Mac OS 9 systems by removing a specific file; Apple later re-released the CDs in an actual stripped-down format that did not facilitate installation on such systems.
As with Panther, certain older machines were no longer supported; Tiger requires a Mac with a built-in FireWire port. The initial release of the Apple TV used a modified version of Tiger with a different graphical interface and fewer applications and services.