![]() Additionally, tests for a newer model iMac may not work properly on an older iMac system, with the same restriction also applying for other Mac models. The hardware tests are built for a specific system, so if you have a restore disc that contains tests for a Mac Pro, you will not be able to use this on a Mac Mini or iMac system. If you experience problems with your system crashing, hanging, or overheating with no change in the fan speed, random changes in fan speeds, or peripheral components not working, then one step that can help determine the problem is to run a hardware test. ![]() Regardless of the condition of your OS installation, if your system's hardware is not working properly then you will undoubtedly see undesired behavior that can stem from slowdowns and hangs to full system crashes and data corruption.īecause of the importance of having working hardware, Apple includes a hardware test routine on all of its new Mac systems, some of which are on the boot drive of your Mac, an others that are on the included OS X installation DVDs that came with older systems.
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