How do i reformat my mac book


so dont know doing.

i've had mac pro 2+ years , getting super slow. have never updated/ installed of new operating systems. im still running mac os x 10.5.8. i've backed files on external hard drive. need next? complete set of dummy proof instructions treat!

 

you don't need reformat improve performance. i've never done in 4+ years , mbp still runs fast day one.

try this: performance tips mac os x
 


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