Mac OS X

Apple's XProtect system (aka File Quarantine) in OS X is a rudimentary anti-malware scanner that will perform a quick check on downloaded files to make sure they do not contain known malware, and will block any versions of Web plug-ins like Java and Flash that have known vulnerabilities.

XProtect runs in the background with no interaction with the user, which is convenient, but it does mean that when it gets updated, users may find themselves unexpectedly unable to access some Web content. Even though quickly updating plug-ins should get you around this inconvenience, it may be useful to know … Read more

The OS X Finder is a great tool to use for organizing your documents and projects into folder hierarchies; however, it is a bit limited. If you would like to save this hierarchy as a list in a file then the Finder and OS X does not provide these options. While the Finder does support printing a folder's listings by dragging a folder to a print queue, this is about the limit of the options for listing folder items.

One alternative to this is to use screenshots; however, these are static images in which items cannot be selected and … Read more

New findings show the recent malware attack that affected employees of Facebook, Apple, and Twitter was able to do so in part by bypassing Apple's GateKeeper security system in OS X.

Gatekeeper is a new technology in OS X Mountain Lion that allows programs to only execute if they are properly signed or if they only come from the Mac App Store. This works by the system blocking all execution and then settings up group-based rules to allow specific program types to run. For example, the default rule sets are for signed applications and those from the Mac App … Read more

When you shut down OS X, the system will first attempt to quit all open applications smoothly and then proceed with the shutdown; however, if a program takes too long to quit, then it may halt the shutdown process and issue a warning that the program has prevented the system from shutting down. While this usually just requires you to quit the program manually and save your data, at times it can be frustrating to deal with, especially if some programs simply take a while to quit.

MacFixIt reader Frida recently wrote in with such a problem:

If your Mac is experiencing problems running, one step for determining the problem is to boot the system into Safe Mode, which is a limited environment that only loads Apple-provided software for basic functionality. To get into Safe Mode you simply restart your Mac with the Shift key held; however, in some cases this will not work and the computer may simply boot normally or experience a problem and hang without booting at all.

The inability to boot into Safe Mode may happen because the system is configured with encryption or other security settings that prevent booting to such modes, … Read more

MacFixIt Answers is a feature in which I answer Mac-related questions e-mailed in by our readers.

This week, readers wrote in with questions about completely wiping a Mac back to factory settings similar to what can be done with an iPod or iPhone, restoring a lost administrative account, removing the account of someone who no longer uses the system, and restoring lost programs that were included with OS X. I welcome views from readers, so if you have any suggestions or alternative approaches to these problems, please post them in the comments!

Question: Completely wiping a Mac back to factory … Read more

The default configuration for printers in OS X is relatively basic and offers you options to essentially add or remove a printer and then set some driver-specific features such as the amount of RAM or duplexing details; however, you may wish to have more options for managing access to your printer, such as limiting access to one printer and not another, or requiring a password to print.

The easiest way to administer these options for printers is via network access, where if you share the printer you can limit which users will have access to it over the network. Doing … Read more

If you have an iPad and one of Apple's laptops (a not too uncommon pairing), then be aware that, depending on how you arrange them, your iPad may put your Mac to sleep.

Apple has made some creative use of magnets in its systems over the years, with lid latches, MagSafe power connections, and other accessory attachments for its systems.

One notable area where Apple has made use of this technology is in its MacBook laptops, where magnets and magnetic sensors in the chassis and lid bezel activate when in close contact, so the system will automatically go to … Read more

One of the newer features in OS X is the Launchpad interface, which offers an iOS-like approach to application management in which programs are organized in a full-screen grid. While this interface should show the applications you have installed, sometimes you may find it missing a few that you need.

Unfortunately Apple does not offer any options for configuring Launchpad to add programs. If you hold the Option key when Launchpad is open, then, as with iOS, the programs will wiggle and allow you to collect them into folders or delete those you purchased from the Mac App Store; however, … Read more