Reset to factory settings for development?

i want used imac develop games on, wondering, need reset factory settings that? i'm thinking when sign apple developer program uses settings on machine? i.e previous owners? need reset put own details it?

advice.

 

yes.
when buy used mac idea, clean install.

to create clean install (formerly known erase & install) of mac os x 10.6 snow leopard (the 29 usd upgrade dvd working retail version of mac os x , not need prior installation of mac os x on mac), follow 1 of following guides:

• short version: clean install of os x 10.6 snow leopard
• long version: mac os x v10.6 snow leopard: how erase , install

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