I've created a Snow Leopard boot disk using this method link. I created it on a 16GB CF Disk. I've tried it twice. First time I formatted the disk as eXfat with 1 partition. Next time I used Mac OS Extended for a 7Gig partition and fat32 for the rest. Upon boot I get the normal install stuff like I do with the DVD, but then no hard disk shows up. I thought it was because of the eXfat which is why I tried again. I looked into the system profiler and I can see my seagate hard disk, but under disk utility it doesn't exist. My Sata DVD drive shows up though. If I boot off of the DVD I can see and install to my hard disk. I'm trying to make a USB Disk because I'm planning on getting a SSD and I will be removing the Dvd drive. I tried searching for a few hours through this site as I'm sure others have run into this issue. I was unable to find an answer though Oh and I forgot. This is a Mid 2009 Macbook.