![]() ![]() ![]() ![]() Should any of these steps fail, please look to Apple Support. Restore your system from backup or use the OS X installation tool to reinstall (note: Hopefully your data will remain safe).If the system does not restart in your previous OS X version then you must reinstall the OS. Repeat the installation (you'll either find the installer in the Applications folder or you can re-download it).Download and reinstall the most recent Combo update for your OS ( available here).Run any general maintenance software you may own (e.g., Onyx).'The days of spending hundreds of dollars. Run Disk Utility to Repair permissions and Disk. Apple on Tuesday announced that its latest upgrade to OS X, Mavericks, will be available for free, starting today.Hopefully the system will restart in your previous OS X version. ![]() Force-restart your system by holding down the power button.If the installer has restarted your Mac to install Mavericks then things may be a little more troublesome: Repeat the installation (you'll either find it in the Applications folder or you can re-download it from the Mac App Store).If this fails Force Quit the installer.If the installer hasn't yet restarted your Mac to install Mavericks (i.e., Your original OS X system is running) then reboot: Don't interrupt the process immediately - installation can take a while and in many cases any slight flaws will be automatically repaired by the installer, so give it an hour before moving to the next step. Your installer runs fine but progress has halted. Reboot normally and try the installation again - it should work. Hold down Command-R immediately after hearing the boot chime on startup.Some Mac users receive an error message warning the OS X Installer thinks their disk may be damaged when they begin installation. Try again a little later to avoid the crowd. An estimated 11 percent of Mac users have already installed the OS, so lots of people are downloading the software simultaneously. If your Mac App Store download stops progressing quit the Store, restart your system and try to download Mavericks again. If you are having problems, three words: "Don't Panic". It's too early to judge the effectiveness of these memory-saving techniques but Apple has never been generous with RAM, so anything helping to increase efficiency is welcomed.If you've succesfully installed Mavericks, but think performance may be less than you expect, please take a look at this report: How to improve Mac performance: OS X Mavericks edition. Mavericks can assign a maximum of 1GB of system memory to the GPU when required, so remaining memory can be used elsewhere. When apps are running in the background, Mavericks uses a feature called compressed memory' to free up resources for other tasks by compressing the data.Īpple has also improved memory management for Macs using Intel's integrated graphics. This suspends apps which may be open but are not being used, reducing the drain on CPU resources. The first is timer coalescing', allows the CPU to perform low-level operations together and then return to a low-power resting state as quickly as possible.Īt a higher level, there's a feature called app nap'. To facilitate this battery improvements on MacBooks, Mavericks introduces two features. We found the update added a shade over an hour to the MacBook Air's already impressive 12-hour battery life. During the launch of Mavericks, Craig Federighi, Apple's VP for software engineering, talked up the battery life improvements the software brings to existing devices.īattery life increases will vary from model to model, but Federighi stated you should be able to get an extra 60 mins of Wi-Fi browsing and 90 mins of video playback from the 2013 13in MacBook Air. ![]()
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