
Click on “Restore” and then “Restore” (I wish I had better notes on this because this doesn’t seem specific enough.
#PARTITION A MAC FOR LINUX INSTALL#
Step 3 – Setup the Snow Leopard Install (optional if you have an install DVD)
Click “Apply” and then “Partition” to format. The fourth partition is a place holder that the Ubuntu install will format: Size: 100 GB (all user/personal files will go here, so entirely up to you). Format: “Mac OS Extended” (not journaled because Linux is going to be reading this). Rename to “Data” (you may use any name). The third partition is the shared data partition: Size: 80 GB (minimum is probably around 20 GB, you may want larger to accommodate /Applications). The second partition is the bootable Snow Leopard OS: Rename to “Install” (you may use any name). The first partition is going to hold the Snow Leopard install (this is not a bootable Snow Leopard OS): Click “Options…” and make sure “GUID Partition Table” is selected. Select “Volume Scheme” > “4 partitions”. Open Application > Utilities > Disk Utility. This step will completely erase the USB drive and any data on it. If you have a Snow Leopard DVD, the first partition I make below is not necessary. I then use that partition to install the Snow Leopard OS on another partition, which will be my OS bootable partition. As part of this process, I create a partition on the external USB for the Snow Leopard install.
The external USB is 400 GB (this could be far less). I’m running a MacBook Pro with 10.5 as the local machine. Afterwards, I could boot from the external USB drive, which was a bit slow but definitely useable. I never modified my primary internal hard drive in this process. I did this as an experiment, so I set up the dual boot on an external USB drive. Set up a hard drive that is bootable to either OS X 10.6 or Ubuntu, but with a shared user partition so that user data is accessible regardless of which operating system is booted into.