How to restore my computer from external hard drive

I recently had to re install a new hard drive and I'm trying to restore my computer from my external hard drive... how do I do that?

S_Higg wrote:
I recently had to re install a new hard drive and I'm trying to restore my computer from my external hard drive... how do I do that?
hold c boot from the 10.6 disk, Erase the drive with Security option > Zero: Partition Option: GUID Format: OS X extended J, quit install 10.6, reboot
https://discussions.apple.com/docs/DOC-3251
Next you'll be in setup assistant,
If the external drive is a TimeMachine drive you can restore, your done. 
If TM is corrupt your screwed and need to perform data recovery options. Stop.
If the external drive is a clone, hold the option key and boot from it, setup the internal drive and reverse clone.
or
If the external drive a clone then set the new machine up with either the same or a different user name depending if the clone is good or bad.
Use the same name if the clone is bad, install your programs from fresh sources on the new drive, transfer files manually from the bad clone.
Use a setup different name if the clone is good, use Utilities > Migration Assistant program on the clone drive to transfer everything over.
You can use a same name with a good clone and chose to reinstall programs fresh and just transfer files you want from the good clone.
If the external drive a storage drive (just files) then set the machine up with the same user name as before and transfer files manually.

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