


CHECKING AN EXTERNAL HD USING TECHTOOL PRO 10 INSTALL
Up to mid 2011: Macs with optical drive came with an OS X install disc.If that’s not available they run from the internet These Macs run the Apple Hardware Test from Recovery HD volume. Mid 2011 to June 2013: Apple discontinued the optical drive.It comes on a hidden disk image, or can also run over the internet Since June 2013: Macs use a new hardware testing system called Apple Diagnostics.It depends on the model and year it launched. Although their appearance and name are different, they both test the hardware for problems. There are number of ways to run Apple Diagnostics or Apple Hardware Test. The tests ensure that all the components and sensors are working. This includes the logic board, memory, battery or power adapter, sensors, graphics and wireless components. Over time faults may start to develop and although the Mac may continue to function, some faults lead to hardware or software instability.Īpple Diagnostics or older Apple Hardware Test is a comprehensive tool to determine problems with a Mac’s internal hardware. The hardware components of a Mac are fairly robust. Use Apple Diagnostics to Determine Hardware Problems Monitor and maintain the health of the hard drive.Take advantage of Apple Diagnostics to reveal hardware problems.In the third part of the tutorial, I’ll show you how to: You can minimise both the number and the severity of problems with a maintenance regimen. Files may not open, search may become slower or irrelevant, apps may start misbehaving and more. This could be a logic board, RAM, or internal fan.

With continuous use, the efficiency can decrease and a Mac may start behaving erratically due to a physical component failing. Macs, like all computers, are prone to break down eventually.
