![]() So, in order to erase the disk withthe Operating System on it, you need to startup the computer from the Mac OS X CDthat came with your computer.How to shred the contents of the startup diskA startup disk is the disk on your computer that contains the Operating System.Typically, it is called “OS X System” and may be the only disk on the system.This procedure assumes that you have a Mac OS X CD from which to reinstallthe Operating System and a copy of the ShredIt X Registration Keyso that you can re-install ShredIt X.To shred the contents of the startup disk, follow these instructions:1. The reason there are twoprocedures is that you cannot erase the startup disk. These will not have the Operating System on them. If you have a partitioned drive, you will have other disks aswell. The startup disk is the one on your computer that has theOperating System on it. For further informationabout shredding free space, see the "About Shredding Free Space" section of thisdocument.There are two procedures for shredding the contents of a disk, one for startup disks anda second for all other disks. You are responsible for ensuring that you have a backup copyof any data or applications you want to use on another computer before you shred thecontents of a disk, since the files cannot be recovered from the disk after it has beenshredded.If what you are trying to do is to shred previously deleted files on your computer, this is not thecorrect procedure to follow. your files), making the computer cleanby destroying your data. ShredIt X Read MeRead all of these instructions before continuing.Performing this function will shred the data, (i.e. You can do this using ShredIt.ShredIt X Read Me 7/31/11 Copyright ©2002-2011, The Mireth Technology Corporation18 Hold down the power button on the old computer to shut it down.How to erase the contents of a Hard Drive without using Target Disk modeBefore disposing of a computer or a hard drive, we recommend that you dispose of anyfiles you don’t want the next user to be able to recover. User ShredIt to shred the free space on the old computers hard disk7. Use the Disk Utility to Erase the old computers hard disk6. The old computer hard disk will appear on the new computer desktop5. Connect the old computer to the new computer using a Firewire cable4. Startup your old computer using Target Disk mode (Restart and hold down the Tkey until the Firewire symbol is displayed)3. In that case please followone of the other procedures for shredding the contents of a startup diskwithout using Target disk mode.Do the following:1. To use the old computer Mac OSX must be installed from an install CD or DVDWhile most Macintosh computers that support Mac OS X also supporttarget disk mode it is possible, if you have a very old computer, that yourMacintosh will not startup in target disk mode. For furtherinformation, refer to the "How to shred Disk Free SpaceHow to erase an old computer using Target Disk modeWhen you purchase a new Macintosh you can use Target Disk mode to copy all theitems from your old Macintosh onto you new Macintosh.Once that is done, and you have logged in to your new Macintosh you can also useTarget Disk mode to clean up the old Macintosh to make it ready for disposal or sale.After following this procedure the old computer will be left without anOperating System and will not startup. Using ShredIt X, shred the disk free space on the Flash Drive. For further information, refer to the “How to InstallShredIt X” section of this document.5. Move all the files left on the USB Flash Drive from the USB Flash Drive to the trash.Empty the trash.4. Plug the USB Flash Drive in to the USB port located on your Mac.
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