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Apple Computing Products:
macOS - Notebook Hardware
clean wipe
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<blockquote data-quote="heiko_s" data-source="post: 1363136" data-attributes="member: 63162"><p>If you are that concerned backup any data that you want to keep to an external HD and boot your macbook from the install DVD. Go through the Menubar and look for the "Disk Utility".</p><p></p><p>Select your HD within Disk Utility and click on "Erase". Now click the button that should be labeled with something like "Security Options". Select one of the options that overwrites (wipes) all data. For sensitive data more than one pass is suggested, but I'd say go for a single pass. Even with one pass it would cost lots of money to have some fragments of your files restored. In order to be able to reinstall OSX, the hard disk needs to be formatted with "Mac OS Extended (Journaled)" and "GUID/GPT-Partion Layout". You can check this under Partition once the wipe process is finished.</p><p></p><p>When you are done follow the steps through the installation.</p></blockquote><p></p>
[QUOTE="heiko_s, post: 1363136, member: 63162"] If you are that concerned backup any data that you want to keep to an external HD and boot your macbook from the install DVD. Go through the Menubar and look for the "Disk Utility". Select your HD within Disk Utility and click on "Erase". Now click the button that should be labeled with something like "Security Options". Select one of the options that overwrites (wipes) all data. For sensitive data more than one pass is suggested, but I'd say go for a single pass. Even with one pass it would cost lots of money to have some fragments of your files restored. In order to be able to reinstall OSX, the hard disk needs to be formatted with "Mac OS Extended (Journaled)" and "GUID/GPT-Partion Layout". You can check this under Partition once the wipe process is finished. When you are done follow the steps through the installation. [/QUOTE]
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Apple Computing Products:
macOS - Notebook Hardware
clean wipe
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