a guid partitioning scheme is required

[Outkast27]

I want to encrypt my external hard drive. After I choose a pw for it in finder, I get the error a guid partitioning scheme is required. How do I correct this? Do I have to partition the drive then add all my files to the drive?

 

[simsaladimbamba]

Yes, and the following guide should help you get the GUID partition map scheme working:

How to format a new HDD to install Mac OS X onto (or make a bootable copy onto)​

Also know, that partitioning and formatting will erase all data on the HDD.

 

[Outkast27]

Thank you!

 

[CarreraGuy]

Yes, and the following guide should help you get the GUID partition map scheme working:

How to format a new HDD to install Mac OS X onto (or make a bootable copy onto)​

Also know, that partitioning and formatting will erase all data on the HDD.

Thank you too! What got me into trouble was when I first formatted my ext. hd was the question about "what are you going to use this drive for?" I picked the wrong option.