Some additional information regarding theories on multi-pass erases can be found here: You cannot reformat the startup drive from which you booted and from which the system is currently running.
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How to Erase a Disk Volume on Mac OS X Snow Leopard
How can I reformat my hard-drive? Ask Question. Sheehan Alam Sheehan Alam 2 5 What are you hoping to do after you format the disk? Restart the computer. Immediately after the startup sound, press and hold the "C" key to start up from CD. When the Installer screen appears, do not click Continue.
How to format my Mac and install Snow Leopard from scratch? - Super User
Select the hard drive to erase. Click the Erase tab. Select the volume format from the Volume Format pop-up menu. Click Options. Select the checkbox for "Zero out data".
Click Erase. Posted on Nov 7, 3: You need to erase and re-install the OS that was on the machine when new oviosuly all your data will be erased but I guess you already have that backed up. If it was Snow Leopard, you should have two grey restore disks - one with the OS and one with the iLife apps.
How to Perform a Clean Install of Snow Leopard OS X 10.6
Boot from the OS X disk disk in drive and restart holding down the 'c' key. The Mac should then slowly boot and you should be able to proceed from there. More info here:. Page content loaded.
Nov 7, 3: Nov 14, 7: What do I do if I don't have the CDs? Is there a way to either download the information to a flash drive or CD or some other method of wiping an old MacBook? Formatting Communities Contact Support. Sign in.
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