Simply put,you can't install an os that is older than the os which was originaly installed from the factory.if your machine shipped with 10.4.3,the only cd/dvd you can reinstall with is the restore disk that shipped with your specific machine or a retail copy of os x that is newer than your machine.. Question: q: problem reinstalling os x lion. ok, so my macbook air becomes unresponsive when logging in, and i decided to reinstall os x lion. " to start up from macos recovery, hold down command (✘)-r immediately after turning on or restarting your mac. release when you see the apple logo. ". Edit article how to reinstall mac os x (leopard and earlier) three parts: preparing to install installing os x setting up os x community q&a reinstalling os x may be necessary from time to time to correct any errors and improve your computer's performance..
Step by step guide manual how to wipe computer clean and reinstall os x macbook pro, imac, macbook air, macbook, macbook retina display, macbook retina display 2, mac pro, imac retina 5k display. For example, if the mac shipped with os x mavericks but is now running os x yosemite, then os x mavericks would be the version that reinstalls through the internet recovery reinstall process. for macs that do not currently have an operating system found or installed, the option will show as “install os x” rather than “reinstall os x”.. There are a few reasons why you might want to reinstall macos (or even mac os x.) perhaps your mac is working erratically and you think that a clean install of the operating system might fix the.