I have an iMac with the Intel icore 5, 4 CPUs. The reason for purchase of Drive Genius 3 was for the defrag capability and other utilities. Since then, I've downloaded OS Mavericks from itunes and that seems to have made my mac run like new. I'm booting the software from an external hard drive for my newer mac and it did fix most problems and the mac ran better. ![]() How to create a secondary start up disk: Note: The instruction is for Lion but will also work and apply for 10.8 and 10.9" What I can recommend is to create a secondary start up disk to run repair. Only macs from 2010 and below will boot to the dvd/cd since these macs has Disk Development Kit included. "What year is your Mac Book Air? All mac's that are manufactured from 2011 to the present will not boot from the disk (DVD) because apple stop support Disk Development Kit allowing these macs to start up using DVD or CD. But for newer macs, it's not plug and play, I contacted prosoft support and promptly got this reply: The mac utilities didn't do much, I decided to get this since, as advertised, the folks at the genius bar use it to tune macs. I was experiencing the never-ending spinning beach ball that I think was caused by a video conversion software I downloaded and trying to move large video files. ![]() ![]() I'm new to apple, bought an macbook air in 2012.
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