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Check this option to install QuickTime 7 for backward compatibility. However, the new version may not support some older media formats that QuickTime 7 handled with aplomb (see this Apple support document for details). QuickTime 7 Snow Leopard includes a new version of QuickTime that claims to offer many improvements over QuickTime 7. If there’s a chance you have older Mac software that never made the jump to Intel code, you should install Rosetta-although, as with printer drivers, Snow Leopard is forgiving here (see below). Rosetta Disabled by default, Rosetta is the behind-the-scenes program that lets you run many PowerPC applications on Intel Macs. On the other hand, at approximately 64MB, it’s worth installing just in case you ever come across an app that needs it. ![]() If you use X11, chances are you’ll know it. How to reformat macbook snow leopard mac os#X11 X11 is a windowing system used by some Unix software to provide a graphical user interface under Mac OS X. Next, click Customize to access a slew of available installation options: On the Installer’s second screen, choose the disk on which to install Snow Leopard if you have only one disk, it’s selected by default. For more on why you might want to choose this route, see “Why Erase and Install?” below.) For example, to erase the hard drive before installing, choose Utilities -> Disk Utility from the first Installer screen after rebooting, and then manually erase the drive you can then exit Disk Utility and proceed with installation. If so, click the Utilities button and follow the instructions to boot off of the Install DVD. (The exception to the steps just mentioned is if you want to check, repair, or erase your hard drive, or use other utilities, while booted from the Install DVD. Instead, you get to choose your install options immediately: just click Continue, accept the license agreement, and you’re taken to the options screen. How to reformat macbook snow leopard mac os x#When you insert the Snow Leopard DVD in your Mac and double-click the Install Mac OS X icon, you aren’t immediately prompted to restart as you have been with previous installers. (Don’t forget to check for new versions of preference panes and other add-ons that run in the background.) Finally, as with any major software update or upgrade, you should be sure to back up before installing Snow Leopard. It's the best way to wipe a disk if you're selling/disposing of your computer or hard drive.Let me also suggest that a major OS upgrade is the perfect chance to check your drives for problems, clean house, and check for updates for your frequently used software. This means that even with recovery tools, somebody couldn't find what was on your disk. The reason to perform this procedure as described above is it removes all traces of data by securely wiping the entire disk. Select the checkbox for "Zero out data".Select the volume format from the Volume Format pop-up menu.Instead, choose Installer > Open Disk Utilities. When the Installer screen appears, do not click Continue.Immediately after the startup sound, press and hold the "C" key to start up from CD.If your goal is to completely wipe all data which is on your current boot disk, then follow the procedure below.
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