I haven’t found any concrete information on the Internet about this, so I’m reporting what I’ve found out about the Xbox’s external hard drive compatibility.
First off, I have an Elite Xbox 360 (Zephyr motherboard) that’s about two years old. I’ve installed the latest Xbox Dashboard with ESPN streaming, which is freaking awesome. I have some large high definition video files larger than 4GB I want to play. I recently bought a 2TB Samsung hard drive from NewEgg, and since I need support for large files, I can’t use FAT32.
I Googled and found that the Xbox supports HFS+, the MacOS extended file system. Perfect! I formatted the drive with Disk Utility on my Mac, and I thought I was good to go. I copied some files over to the new drive and plugged the USB drive into my Xbox, but the Xbox didn’t recognize the drive. Nothing showed up on the Xbox as a connected portable device.
It turns out that Disk Utility partitioned the drive with GPT (GUID Partition Table, the successor to the old MBR (Master Boot Record). So I had to changed how the new drive was partitioned. The usual warning applies: you will lose all data on your drive when you repartition the drive this way!!
I guess the Xbox isn’t compatible with GPT. So I repartitioned the drive with MBR, formatted it to MacOS Extended (not journaled). Hooked it up to the Xbox, and bam! Everything works fine.
EDIT: Some other caveats: Even though HFS+ has support for files larger than 4GB, the Xbox is still limited opening files less than 4GB in size. A dumb limitation, IMO, but I can still use the drive for other large files on my Mac.


Simon
I was pretty excited to find this post as I have been trying to get HFS+ volumes working with my Xbox again – they were working fine until the fall update that added ESPN and Kinect support. The update made USB storage possible and killed non-iPod HFS support in the process.
So I partitioned a drive with MBR and formatted for MacOS Extended (not journaled) – but it still isn’t working =(
Any ideas on what I did differently from you?
Blake
It sounds like you’re doing everything correctly. I’ve read online that you do have to download an Xbox update to read HFS-formatted hard drives and iPods. I know when I’ve downloaded Dashboard updates in the past, I’ve had to re-download other updates. Have you tried manually re-downloading after the dashboard update?
I think you’ll want http://marketplace.xbox.com/en-US/Product/Optional-Media-Update/66acd000-77fe-1000-9115-d802fffe07df
Greg
Finally a solution that works… thanks so much for posting this I have been racking my brains trying to figure out why my 360 would not detect my 2TB drive using Mac OS Extended format.
Now I can finally put all my media on a single drive and connect it to my 360.