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Reset PRAM

Macs store some low level information in permanent internal memory called "parameter RAM" (PRAM). Different things are stored here depending on your machine - newer machines tend to store more. If this information gets damaged your machine might behave strangely and booting from a CD won't help because the information is in memory, not disk.

To reset Parameter RAM settings hold down the command option P R keys while starting the computer. The machine will restart, you should hear the startup chime twice, then you can release the keys. This will often fix various "unexplained" bugs.

Note that some functions, such as mouse speed, clock, and network ports might also be reset, depending on your hardware and OS.



I usually write a blog post about once a week. The latest post can be viewed here: Unity Through Division: Sometimes hard decisions need to be made to make genuine progress. (posted 2024-11-18 at 19:13:00). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-08-22 Stirring Up Trouble: Let's just get every view out there and fairly debate them..
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