While the installer should do this, you can take the extra precaution to partition it with Disk Utility beforehand. Be sure to format the drive properly to avoid errors. While the first method uses the cloned disk as an intermediary for your files, programs, and data while you install, another method is to install to the external disk and migrate your files to it, and then clone that disk to the internal drive once it is running properly.īoot off the OS X installation DVD and choose the external drive as the destination instead of the internal drive. At this point attach your cloned drive or Time Machine backup, choose the appropriate option, and proceed with the migration. Once the installation is complete, the system will prompt you to open the Migration Assistant and copy data from an existing backup, another local startup disk, or another Mac. When you select your language, choose "Disk Utility" from the "Utilities" menu and format the internal hard drive (not any external or USB hard drives-in fact, it may be safest to unplug all external drives during this process to avoid any confusion and potential loss of your cloned data). Do not continue with the restore, and instead quit and restart the system.īoot to the OS X install DVD and proceed with a fresh installation of OS X. In the list of available backups, check that the latest one is available and you should be good to go. If you have used Time Machine, boot off the OS X installation DVD, select your language, and then from the "Utilities" menu select the "Restore System from Backup" option. If you have created a clone, be sure to test it by booting off of it (hold the Option key at startup and select it from the boot menu).
Purchase an external USB or Firewire hard drive, and use a cloning utility like Carbon Copy Cloner or SuperDuper to create a full copy of your hard drive to the external device.
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