To answer nfoav8or's questions:

Yes it assumes that you have it partitioned as GUID, the drives are in the diskXsY format (the app uses 'diskutil list' to grab a list of the drives, finds the ones that are 1st partition with the EFI label and size 200MB then displays them in the drop down menu), and this is based on efi_boot_v6.1.

lanxxx,

This tool completely automates the EFI partition procedure including formatting EFI partition, installing the bootloader, setting partition as active, setting up directory tree, installing kexts/kernel/plist, These functions are available separately as well through the app's menu. I have JaS testing this for me right now, but meanwhile here's a screenshot that should explain a lot:

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• Gigabyte GA-P35-DS3P | Intel Core 2 Quad Q6600 @ 2.4GHz | BFG GeForce GTX 260 (216 Core) | 2GB | 250GB + 40GB + 250GB HDDs | Mac OS X 10.6.1 | vanilla (Retail install)| Everything working
• MacBook Pro (Late 2008) | GeForce 9400M + 9600MGT 256MB | 2GB | 250GB HDD | 10.6.1