Troubleshooting

Apple's MacBook systems support a mode called "clamshell" which allows you to close the lid and continue using the system in a desktop configuration if you attach an external monitor and a keyboard. This mode is exceptionally useful for docking the system when at a work desk, but there may be times when the system will not properly enter clamshell mode, and instead stay in an extended desktop mode with the system's built-in display still active.

If this happens to you and your system will not fully enter clamshell mode, there are a couple of things … Read more

If you are running OS X Lion or Mountain Lion and need to see some quick information about your Mac's hardware, you can do so by selecting "About This Mac" from the Apple menu, and then clicking the "More Information" button to launch Apple's System Information tool. This tool can be used to generate a detailed system report, but by default will show a brief summary window that includes a breakdown of storage usage.

The storage view shows your hard drive and includes a small diagram that breaks down the amount of space used … Read more

OS X is an account-based system, in which individual users have their own accounts storing their own settings and data. When you set up a user account, the system will ask you for your name and then based on that will create a short username the system will use to identify your user account.

This short username is the true username of the account, but you can use the short name or your full name at the log-in window. Since the system initially generates it for you, it's easy to overlook the fact that you have the chance to … Read more

In OS X you should be able to create and manipulate files on your system largely without being burdened to authenticate, especially if the files are within resources your account owns such as your home folder. However, after upgrading or otherwise performing changes to the system you may find that the system continually prompts you for a password when you try to manage your files.

Sometimes this issue may occur only when you perform certain tasks such as deleting files (as opposed to placing them in the trash), but at other times it may happen on any manipulation.

OS X … Read more

While setting your Mac to automatically sleep after a period of inactivity has its energy-saving benefits, you may find that the system will go to sleep even when it is churning through data (e.g., applying a lengthy filter routine to groups of images).

This issue happens because Apple has implemented some changes to the latest versions of OS X that result in different requirements for the system to determine if it can go to sleep, and one of these is a new dependence on applications to invoke a "power assertion" to keep the system from going to … Read more

Following recent security vulnerabilities in Java, malware developers are taking a new approach to exploit the Java platform by issuing false updates that pose as legitimate updates for the runtime.

The latest version of the Java runtime that fixes recent vulnerabilities is update 11, and Kaspersky labs is reporting that a new malware is out that poses as "Java Update 11." The malware is packaged in a Java archive file called "javaupdate11.jar" that contains two Windows-based executables called "up1.exe" and "up2.exe." When installed the programs open a back door … Read more

The OS X Terminal is an exceptionally useful tool for getting to the underpinnings of OS X and troubleshooting problematic aspects of the system, developing and testing code, and managing remote connections among many other details. When you launch the Terminal, the system should load the default shell in which you can execute various programs and scripts, but depending on how you have configured your system the shell may not load and instead show a blank Terminal window.

There are a couple of possible reasons why this might happen, which are that the default shell configuration for your account may … Read more

The OS X menu bar is a central location for accessing system resources in the Apple menu, application-specific menus, and also a number of system settings through menu extras that can be appended to the right side of the menu bar. Some extras that are on by default include the time and date, battery level, and volume control, but others can be added to the bar, including VPN status, keychain, the script menu, and Bluetooth status.

Though these menu extras are convenient, there may be times when problems occur with this part of the system menu, such as freezes and … Read more

One of the major differences in how applications are handled between Windows and OS X are how the system presents them to you in the user interface. With Windows, each program will generally load in a single window that contains the program's menus and other details, and then be managed in that window. If you open the program again then often the system will launch a second instance of this program that runs along side the first, so each can be quit and managed independently.

On the other hand, in OS X applications are not isolated to a similar … Read more