On the other hand, if you hold the 'Option' button down while mouse-clicking, then you can increase the Forward or Reverse speeds in increments of 0.1x with speeds in the range of 1.0x through 1.9x having audio. If you repeatedly mouse-click the Fast Forward or Fast Reverse control buttons, then you can set multiple Forward or Reverse speeds of 2x, 5x, 10x, 30x, or 60x—all without audio.

Aug 1, 2012 - Installing PT 7.3 LE on Snow Leopard - Mac OS X 10.6.8 003, Mbox 2. I want to run a clean install, which means I'll have to install PT again.

CNET Mac OS X 10.10 Yosemite is out, but there are four things you need to do before upgrading your Mac to Apple's latest operating system. Check whether your Mac is able to run Yosemite According to Apple, the following are the supported models for Yosemite: • iMac (Mid-2007 or newer) • MacBook (13-inch, late 2008 aluminum, early 2009 or newer) • MacBook Pro (13-inch, mid-2009 or newer) • MacBook Pro (15-inch, mid/late 2007 or newer) • MacBook Pro (17-inch, late 2007 or newer) • MacBook Air (Late 2008 or newer) • Mac Mini (Early 2009 or newer) • Mac Pro (Early 2008 or newer) • Xserve (Early 2009) If you can't remember your Mac's vintage, click the Apple logo in the upper-left corner and choose About This Mac.

A small window will pop up, showing basic system information. Screenshot by Matt Elliott/CNET. You may wish to read our article on. Or watch about how to upgrade the RAM on a MacBook Pro.

Check your current OS X version If you haven't updated your Mac's operating system in a number of years, then you need to check to see if you are running at least OS X 10.6.8 Snow Leopard, which was released way back in 2009. Its 10.6.6 update introduced the Mac App Store, which you'll need in order to download Yosemite. The About This Mac window will show which version of OS X you have. You need be running one of the following: • OS X Snow Leopard (10.6.8) • OS X Lion (10.7) • OS X Mountain Lion (10.8) • OS X Mavericks (10.9).

If you have an ancient Mac with an OS predating Snow Leopard, you will need to install Snow Leopard before then moving to Yosemite. You can buy Snow Leopard for $19.99. Before you do anything, back up your Mac If you have determined that your Mac can run Yosemite, then (as always) your first move before upgrading should be to perform a system backup to protect your data. Should the installation go awry, you don't want to lose important documents along with your photo and music libraries. Thankfully, Macs include a tool that make backups easy: Time Machine.