I'm curious whether or not all your files get erased after you install a new OS. I don't think they do but i want to know for sure.
If you are upgrading OS-X on a Mac, it is not an issue. If you are installing Linux on a Mac or PC or if you are installing Windows on a Mac, there are precautions you need to take. The details should be available with whatever you are trying to install.
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I'm curious whether or not all your files get erased after you install a new OS. I don't think they do but i want to know for sure.
If you are upgrading OS-X on a Mac, it is not an issue. If you are installing Linux on a Mac or PC or if you are installing Windows on a Mac, there are precautions you need to take. The details should be available with whatever you are trying to install.