Apple Imac Mid2011 User Guide
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51 Chapter 4 Problem, Meet Solution Use the Mac OS X Utilities application to: ÂRestore your software and data from a Time Machine backup. ÂReinstall Mac OS X and Apple applications. ÂRestore your computer to its factory settings by erasing its disk and reinstalling Mac OS X and your Apple applications. ÂRepair your computer’s disk using Disk Utility. If your computer detects a problem, it opens the Mac OS X Utilities application automatically. You can also open the application manually by restarting your computer.
52Chapter 4 Problem, Meet Solution To open the Mac OS X Utilities application: mRestart your computer while holding down the Command (x) and R keys. Some utilities in the Mac OS X Utilities application require access to the Internet and the Mac App Store. You may need to make sure your computer is connected to the Internet by using your Ethernet or Wi-Fi network. To connect by using a Wi-Fi network: 1 Choose a network from the Wi-Fi status menu in the upper-right corner of the screen. 2 If necessary, type the network password. To join a closed network, choose Join Other Network. Enter the network’s name and password. Repairing a Disk with Disk Utility If you have a problem with your computer, or if you start your computer and see the Mac OS X Utilities pane, you may need to repair your computer’s disk. 1 Select Disk Utility in the Mac OS X Utilities pane and click Continue. 2 Select the disk or partition in the list on the left, and then click the First Aid tab. 3 Click Repair Disk. If Disk Utility can’t repair the disk, back up as much of your information as possible, and then follow the instructions in “Reinstalling Mac OS X and Apple Applications” on page 53. For information about Disk Utility and its options, see Help Center, or open Disk Utility (in the Utilities folder in Launchpad) and choose Help > Disk Utility Help.
53 Chapter 4 Problem, Meet Solution Restoring Information Using a Time Machine Backup You can use the Restore utility to restore everything on your computer to its previous state if you have a Time Machine backup. Use your Time Machine backup to restore information only to the computer that was the source of the backup. If you want to transfer information to a new computer, use Migration Assistant (in the Utilities folder in Launchpad). 1 If your backup is on a Time Capsule, make sure you’re connected to an Ethernet or Wi-Fi network. ( To connect to a Wi-Fi network, follow the instructions on page 52.) 2 In the Mac OS X Utilities pane, select Restore From Time Machine Backup and click Continue. 3 Select the disk that contains the Time Machine backup, and then follow the onscreen instructions. Reinstalling Mac OS X and Apple Applications Under some circumstances, you may need to reinstall Mac OS X and Apple applications. You can reinstall while keeping your files and user settings intact. 1 Make sure you’re connected to the Internet by using an Ethernet or Wi-Fi network. ( To connect to a Wi-Fi network, follow the instructions on page 52.) 2 In the Mac OS X Utilities pane, select Reinstall Mac OS X and click Continue. 3 In the pane where you’re asked to select a disk, select your current Mac OS X disk (in most cases, it is the only one available). 4 To select or deselect optional software, click Customize. 5 Click Install.
54Chapter 4 Problem, Meet Solution You can install Mac OS X without erasing the disk, which saves your existing files and settings, or you can erase the disk first, which erases all your data and leaves the computer ready for you to reinstall Mac OS X and Apple applications. After reinstalling Mac OS X, you can re-download the Apple applications that came with your iMac and other apps you purchased from the Mac App Store. You can restore your other data and applications from a Time Machine or other backup. Important: Apple recommends that you back up the data on the disk before restoring software. Apple is not responsible for any lost data. Restoring Your Computer to Its Factory Settings When you restore your computer to its factory settings, everything on your computer (your user accounts, network settings, and all of your files and folders) is deleted. Before you restore, back up any files you want to keep by copying them to another disk. Write down your network settings from Network preferences to make it easier to get connected again after reinstalling Mac OS X. 1 Make sure you’re connected to the Internet by using an Ethernet or Wi-Fi network. ( To connect to a Wi-Fi network, follow the instructions on page 52.) 2 In the Mac OS X Utilities pane, select Disk Utility and click Continue. 3 Select the disk in the list on the left, and then click the Erase tab. 4 Select Mac OS Extended (Journaled) from the Format pop-up menu, type a name for the disk, and then click Erase. 5 After the disk is erased, choose Disk Utility > Quit Disk Utility. 6 In the Mac OS X Utilities pane, select Reinstall Mac OS X and click Continue.
55 Chapter 4 Problem, Meet Solution 7 To reinstall Mac OS X and your applications, follow the instructions in the Mac OS X Installer. After reinstalling Mac OS X, you can re-download the Apple applications that came with your iMac and other apps you purchased from the Mac App Store. You can restore your other data and applications from a Time Machine or other backup. Checking for a Hardware Problem If you suspect a hardware problem, use the Apple Hardware Test application to help determine if there’s a problem with one of the iMac components. To use Apple Hardware Test: 1 Disconnect all external devices from your iMac, except the keyboard and mouse. If you have an Ethernet cable connected, disconnect it. 2 Restart your iMac while holding down the D key. 3 When the Apple Hardware Test chooser screen appears, select the language you want to use. 4 Press the Return key or click the right arrow button. 5 When the Apple Hardware Test main screen appears (after about 45 seconds), follow the onscreen instructions. 6 If Apple Hardware Test detects a problem, it displays an error code. Make a note of the error code before pursuing support options. If Apple Hardware Test doesn’t detect a hardware failure, the problem may be software-related.
56Chapter 4 Problem, Meet Solution Important: If the Apple Hardware Test window doesn’t appear after restarting, hold down the Command (x), Option, and D keys and restart the computer to access the Apple Hardware Test software from the Internet. Your computer must be connected to a network that has access to the Internet. Replacing the Batteries Your Apple Wireless Keyboard and Apple Magic Mouse each come with two AA batteries installed. You can replace them with alkaline, lithium, or rechargeable AA batteries. Keep the battery compartment cover and batteries out of the reach of small children. WARNING: When you replace the batteries, replace them all at the same time. Don’t mix old batteries with new batteries or mix battery types (for example, don’t mix alkaline and lithium batteries). Don’t open or puncture the batteries, install them backwards, or expose them to fire, high temperatures, or water. Keep batteries out of the reach of children.
57 Chapter 4 Problem, Meet Solution To replace the batteries in the Apple Wireless Keyboard: 1 Press the power button (®) to turn off your keyboard. 2 Use a coin to remove the battery compartment cover. Battery compartment cover 3 Slide two AA batteries into the battery compartment, as shown below. Insert batteries 4 Replace the battery compartment cover. To check the battery status, press the power button (®). If the indicator light doesn’t glow, you may need to change the batteries. You can check the battery level in Keyboard preferences. Choose Apple () > System Preferences and click Keyboard. The battery level is in the lower-left corner.
58Chapter 4 Problem, Meet Solution To replace the batteries in the Apple Magic Mouse: 1 Slide the on/off switch on the bottom of your mouse to turn it off. 2 Slide the latch down and remove the battery cover. LatchBatteries 3 Insert the batteries with the positive ends (+) facing up, as shown above. 4 Replace the cover and turn on your mouse. You may have to click your Apple Magic Mouse once to reconnect it to your iMac. To check the battery status, slide the on/off switch to turn on the mouse. If the indicator light doesn’t glow, you may need to change the batteries. You can check the battery level in Mouse Preferences. Choose Apple () > System Preferences and click Mouse. The battery level is shown in the lower-left corner. Problems with Your Internet Connection The Network Setup Assistant application on your iMac can help walk you through setting up an Internet connection. Open System Preferences and click Network. Click the “Assist me” button to open Network Setup Assistant.
59 Chapter 4 Problem, Meet Solution If you have trouble with your Internet connection, you can try the steps in this section for your type of connection or you can use Network Diagnostics . To use Network Diagnostics: 1 Choose Apple () > System Preferences. 2 Click Network and then click “Assist me.” 3 Click Diagnostics to open Network Diagnostics. 4 Follow the onscreen instructions. If Network Diagnostics can’t resolve the problem, there may be a problem with the Internet service provider (ISP) you are trying to connect to, with an external device you are using to connect to your ISP, or with the server you are trying to access. You can try the steps in the following sections. Cable Modem, DSL Modem, and LAN Internet Connections Make sure all modem cables are firmly plugged in, including the modem power cord, the cable from the modem to your iMac, and the cable from the modem to the wall jack. Also check the cables and power supplies to any Ethernet hubs or routers. Turn off your DSL or cable modem for a few minutes, and then turn it back on. Some ISPs recommend that you unplug the modem’s power cord. If your modem has a reset button, you can press it either before or after you turn the power off and on. Important: Instructions that refer to modems do not apply to LAN users. LAN users might have hubs, switches, routers, or connection pods that cable and DSL modem users do not have. LAN users should contact their network administrator rather than an ISP.
60Chapter 4 Problem, Meet Solution PPPoE Connections If you are unable to connect to your ISP using PPPoE (Point to Point Protocol over Ethernet), make sure you entered the correct information in Network preferences. To enter PPPoE settings: 1 Choose Apple () > System Preferences. 2 Click Network. 3 Click Add (+) at the bottom of the network connection services list, and choose PPPoE from the Interface pop-up menu. 4 Choose an interface for the PPPoE service from the Ethernet pop-up menu. Choose Ethernet if you are connecting to a wired network, or Wi-Fi if you are connecting to a wireless network. 5 Click Create. 6 Enter the information you received from your service provider, such as the account name, password, and PPPoE service name (if your service provider requires it). 7 Click Apply to make the settings active. Network Connections Make sure the Ethernet cable is plugged into your iMac and into the network. Check the cables and power supplies to your Ethernet hubs and routers. If you have two or more computers sharing an Internet connection, be sure that your network is set up properly. You need to know whether your ISP provides only one IP address or multiple IP addresses, one for each computer.